AGRI NUTRITION GROUP LTD
8-K, 1998-11-17
PHARMACEUTICAL PREPARATIONS
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                     SECURITIES AND EXCHANGE COMMISSION

                           Washington, D.C.  20549


                                  FORM 8-K


                               CURRENT REPORT


                   Pursuant to Section 13 or 15(d) of the
                     Securities and Exchange Act of 1934



     Date of Report (Date of earliest event reported): October 16, 1998


                        Agri-Nutrition Group Limited
           (Exact name of registrant as specified in its charter)

<TABLE>
<CAPTION>
<S>                                       <C>                                          <C>
         Delaware                                      0-24312                                  43-1648680
        (State of                               (Commission File No.)                         (IRS Employer
      Incorporation)                                                                        Identification No.)
</TABLE>


                          Riverport Executive Center II
                        13801 Riverport Drive, Suite 111
                        Maryland Heights, Missouri 63043
          (Address of principal executive offices, including zip code)



                                 (314) 298-7330
              (Registrant's telephone number, including area code)




<PAGE>



ITEM 5.  OTHER EVENTS

         On October 16,  1998,  Agri-Nutrition  Group  Limited  (the  "Company")
entered  into an  Agreement  and Plan of Merger (the  "Merger  Agreement")  with
Virbac  S.A.,  a French  corporation  ("VBSA"),  and  Virbac,  Inc.,  a Delaware
corporation  ("Virbac"),  pursuant to which  Virbac will be merged with and into
the Company (the  "Merger")  with the Company being the  surviving  corporation.
Pursuant  to the Merger  Agreement,  VBSA will form a French  subsidiary  ("VBSA
Sub") that will become a party to the Merger Agreement. Upon consummation of the
Merger,  the Company will issue shares of its common  stock,  par value $.01 per
share  ("Common  Stock"),   that  will  constitute   approximately  60%  of  its
outstanding  Common  Stock after the Merger,  to VBSA Sub,  thereby  effecting a
change of control of the Company pursuant to which VBSA will become the indirect
majority  stockholder of the Company.  The Merger Agreement requires VBSA, prior
to the  consummation  of the Merger,  to  contribute to Virbac cash in an amount
equal  to the sum of (i) $6.7  million,  and (ii)  the  difference  between  (a)
Virbac's  outstanding debt,  including  accrued interest  thereon,  plus certain
expenses incurred by Virbac in connection with the Merger and (b) Virbac's cash,
with each of such amounts to be calculated as of December 31, 1998. In addition,
following  the  Merger,  the  Company  will  complete  one,  and  under  certain
circumstances  a second,  tender offer for a portion of its  outstanding  Common
Stock at a price of $3.00 per share.  The Company will change its name to Virbac
Corporation  upon consummation of the Merger.   It is expected  that the  Merger
will  be  consummated  in January 1999, subject  to approval  by  the  Company's
stockholders, regulatory approval and other customary closing conditions.

         VBSA,  headquartered in Carros, France, is a manufacturer of veterinary
pharmaceuticals and has operations  throughout the world. Virbac,  headquartered
in Fort Worth,  Texas, is the U.S.  subsidiary of VBSA and is a manufacturer and
distributor   of  a  wide  variety  of  animal  health   products   focusing  on
dermatological, parasiticide and dental products.

ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS

         (a)      Financial Statements of Business Acquired.

                  None.

         (b)      Pro Forma Financial Statement Information.

                  None.

         (c)      Exhibits.

         2.1      Agreement  and Plan of Merger,  dated October 16, 1998, by and
                  among the Company, VBSA and Virbac.

         99.1     Press release of the Company dated October 19, 1998.


                                                         2

<PAGE>





                               SIGNATURE

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.





                                      Agri-Nutrition Group Limited



                                      By:  /S/ ROBERT J. ELFANBAUM 
                                           Robert J. Elfanbaum
                                           Chief Financial Officer


Date: November 17, 1998

                                                         3





                                                 TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                               Page

<S>                                                                                                             <C>
ARTICLE I  THE MERGER.............................................................................................1
         Section 1.1.      The Merger.............................................................................1
         Section 1.2.      Effective Time.........................................................................1
         Section 1.3.      Closing................................................................................2
         Section 1.4.      Effects of the Merger..................................................................2
         Section 1.5.      Certificate of Incorporation and Bylaws................................................2
         Section 1.6.      Directors..............................................................................2
         Section 1.7.      Officers...............................................................................2
         Section 1.8.      Alternative Structure..................................................................3

ARTICLE II  CONVERSION OF SECURITIES..............................................................................3
         Section 2.1.      Effect on Capital Stock................................................................3
         Section 2.2.      Adjustments of Parent's Share Ownership in AGNU........................................3

ARTICLE III REPRESENTATIONS AND WARRANTIES OF PARENT AND VIRBAC...................................................3
         Section 3.1.      Organization and Authority.............................................................4
         Section 3.2.      Subsidiaries...........................................................................4
         Section 3.3.      Capitalization.........................................................................4
         Section 3.4.      Authorization..........................................................................5
         Section 3.5.      Consent and Approvals; No Violations...................................................5
         Section 3.6.      Financial Statements...................................................................5
         Section 3.7.      Absence of Certain Changes or Events...................................................6
         Section 3.8.      No Undisclosed Liabilities.............................................................6
         Section 3.9.      Proxy Statement........................................................................7
         Section 3.10.     Benefit Plans..........................................................................7
         Section 3.11.     Litigation.............................................................................8
         Section 3.12.     Compliance with Applicable Law.........................................................9
         Section 3.13.     Tax Matters............................................................................9
         Section 3.14.     Customer Warranties...................................................................11
         Section 3.15.     Brokers...............................................................................11
         Section 3.16.     Material Contracts....................................................................11
         Section 3.17.     Labor Matters.........................................................................12
         Section 3.18.     Environmental Matters.................................................................12
         Section 3.19.     Virbac Intellectual Property..........................................................13
         Section 3.20.     Year 2000 Issues......................................................................13
         Section 3.21.     Regulatory Compliance.................................................................14
         Section 3.22.     State Takeover Statutes Inapplicable..................................................14

ARTICLE IV REPRESENTATIONS AND WARRANTIES OF AGNU................................................................14
         Section 4.1.      Organization and Authority............................................................14
</TABLE>


                                                         i

<PAGE>

<TABLE>
<CAPTION>

                                                                                                               Page
<S>                                                                                                            <C>
         Section 4.2.      Subsidiaries..........................................................................15
         Section 4.3.      Capitalization........................................................................15
         Section 4.4.      Authorization.........................................................................15
         Section 4.5.      Consents and Approvals; No Violations.................................................16
         Section 4.6.      SEC Reports and Financial Statements..................................................16
         Section 4.7.      Absence of Certain Changes or Events..................................................17
         Section 4.8.      No Undisclosed Liabilities............................................................17
         Section 4.9.      Proxy Statement.......................................................................18
         Section 4.10.     Benefit Plans.........................................................................18
         Section 4.11.     Litigation............................................................................19
         Section 4.12.     Compliance with Applicable Law........................................................20
         Section 4.13.     Tax Matters...........................................................................20
         Section 4.14.     Customer Warranties...................................................................22
         Section 4.15.     Brokers...............................................................................22
         Section 4.16.     Material Contracts....................................................................22
         Section 4.17.     Labor Matters.........................................................................22
         Section 4.18.     Environmental Matters.................................................................23
         Section 4.19.     AGNU Intellectual Property............................................................23
         Section 4.20.     Year 2000 Issues......................................................................24
         Section 4.21.     Regulatory Compliance.................................................................24
         Section 4.22.     Voting Requirements...................................................................24
         Section 4.23.     Issuance of Merger Shares.............................................................24

ARTICLE V  COVENANTS.............................................................................................25
         Section 5.1.      Affirmative Covenants of Virbac.......................................................25
         Section 5.2.      Negative Covenants of Virbac..........................................................25
         Section 5.3.      Affirmative Covenants of AGNU.........................................................27
         Section 5.4.      Negative Covenants of AGNU............................................................28

ARTICLE VI  ADDITIONAL AGREEMENTS................................................................................30
         Section 6.1.      Access and Information................................................................30
         Section 6.2.      Confidentiality.......................................................................30
         Section 6.3.      Proxy Statement.......................................................................31
         Section 6.4.      AGNU Stockholder Approval.............................................................32
         Section 6.5.      Further Action; Commercially Reasonable Best Efforts..................................32
         Section 6.6.      Public Announcements..................................................................33
         Section 6.7.      Directors' and Officers' Insurance and Indemnification................................33
         Section 6.8.      HSR Act Matters.......................................................................34
         Section 6.9.      No Solicitation.......................................................................34
         Section 6.10.     Affiliate Agreements..................................................................36
         Section 6.11.     Conduct of Business of Parent and Surviving Corporation...............................36
         Section 6.12.     Expenses..............................................................................36
         Section 6.13.     Termination Fee.......................................................................37
         Section 6.14.     Tax Treatment.........................................................................37
</TABLE>


                                                        ii

<PAGE>

<TABLE>
<CAPTION>

                                                                                                               Page
<S>                                                                                                            <C>
         Section 6.15.     Assumption of Certain Obligations.....................................................37
         Section 6.16.     No Action.............................................................................37
         Section 6.17.  Employment Agreements Undertaking........................................................37
         Section 6.18.  Cash Infusion............................................................................37

ARTICLE VII  CLOSING CONDITIONS..................................................................................38
         Section 7.1.      Conditions to Obligations of AGNU, Parent and Virbac to Effect the
                  Merger.........................................................................................38
                  (a)      Stockholder Approval..................................................................38
                  (b)      No Order..............................................................................38
                  (c)      Regulatory Approvals..................................................................38
                  (d)      Third Party Consents..................................................................38
                  (e)      Tax Opinion of Virbac's Counsel.......................................................38
                  (f)      Non-Competition Agreement.............................................................39
         Section 7.2.      Additional Conditions to Obligations of AGNU..........................................39
                  (a)      Representations and Warranties........................................................39
                  (b)      Agreements and Covenants..............................................................39
                  (c)      No Material Adverse Effect............................................................39
                  (d)      Cash Infusion by Parent...............................................................39
                  (e)      Fairness Opinion......................................................................39
                  (f)      Supply Agreement......................................................................40
         Section 7.3.      Additional Conditions to Obligations of Parent and Virbac.............................40
                  (a)      Representations and Warranties........................................................40
                  (b)      Agreements and Covenants..............................................................40
                  (c)      No Material Adverse Effect............................................................40
                  (d)      Stockholders' Agreements..............................................................40

ARTICLE VIII  POST-CLOSING COVENANTS.............................................................................40
         Section 8.1.      Stock Repurchase......................................................................40
         Section 8.2.      Contingent Stock Repurchase...........................................................40
                  (a)      Contingent Repurchase.................................................................40
                  (b)      Contingent Capital Contribution.......................................................41
                  (c)      Adjustments...........................................................................41
                  (d)      Board Discretion......................................................................41
         Section 8.3.      Minority Stockholder Director Nominee.................................................41
         Section 8.4.      Release of VBSA Guarantee.............................................................42
         Section 8.5.      Fiscal Year of Surviving Corporation..................................................42
         Section 8.6.      Further Assurances....................................................................42

ARTICLE IX  REGISTRATION RIGHTS..................................................................................42
         Section 9.1.      Demand Registration...................................................................42
         Section 9.2.      Indemnification by the Surviving Corporation..........................................43
         Section 9.3.      Indemnification by Parent.............................................................44
         Section 9.4.      Notices of Claims, Etc................................................................44
</TABLE>


                                                        iii

<PAGE>

<TABLE>
<CAPTION>

                                                                                                               Page
<S>                                                                                                            <C>
         Section 9.5.      Other Indemnification.................................................................45
         Section 9.6.      Contribution..........................................................................45
         Section 9.7.      Registration Covenants of the Surviving Corporation...................................45
         Section 9.8.      Expenses..............................................................................48
         Section 9.9.      Rule 145..............................................................................48
         Section 9.10.     Limitation on Requirement to File or Amend Registration Statement.....................48

ARTICLE X  TERMINATION, AMENDMENT AND WAIVER.....................................................................49
         Section 10.1.     Termination...........................................................................49
         Section 10.2.     Effect of Termination.................................................................51
         Section 10.3.     Amendment, Extension and Waiver.......................................................51

ARTICLE XI  GENERAL PROVISIONS...................................................................................51
         Section 11.1.     Nonsurvival of Representations, Warranties and Agreements.............................51
         Section 11.2.     Notices...............................................................................52
         Section 11.3.     Certain Definitions...................................................................53
         Section 11.4.     Headings..............................................................................54
         Section 11.5.     Entire Agreement......................................................................54
         Section 11.6.     Severability..........................................................................55
         Section 11.7.     No Third Party Beneficiaries..........................................................55
         Section 11.8.     Governing Law.........................................................................55
         Section 11.9.     Disclosure Schedules..................................................................55
         Section 11.10.    Counterparts..........................................................................55
</TABLE>

Exhibit A         Restated Certificate of Incorporation of AGNU
Exhibit B         Restated Bylaws of AGNU
Exhibit C         Virbac Affiliate Agreement
Exhibit D         VBSA Affiliate Agreement
Exhibit E         Addendum to Agreement
Exhibit F         Employment Agreements Undertaking
Exhibit G         Noncompetition Agreement
Exhibit H         Supply Agreement
Exhibit I         Form of Stockholder's Agreement
Exhibit J         Opinion of Environmental Counsel of AGNU

Schedule 1.6      Directors of Surviving Corporation
Schedule 1.7      Officers of Surviving Corporation
Schedule 7.3      Parties to Stockholders' Agreements

Appendix A        Virbac Disclosure Schedule
Appendix B        AGNU Disclosure Schedule



                                                        iv

<PAGE>




                         TABLE OF DEFINED TERMS


Term                                        Location

Acquisition Agreement                       6.9(b)
Acquisition Proposal                        6.9(e)
Affiliate                                   11.3(a)
AGNU                                        Preamble
AGNU 1997 l0-K                              4.13(a)
AGNU Benefit Plans                          4.10(a)
AGNU Common Stock                           2.1
AGNU Compensation Agreements                4.10(a)
AGNU Disclosure Schedule                    Article IV
AGNU Fairness Opinion                       5.3(c)
AGNU Intellectual Property                  4.19
AGNU Options                                2.2
AGNU Pension Plans                          4.10(b)
AGNU Permits                                4.12
AGNU Preferred Stock                        4.3
AGNU Required Consents                      4.5
AGNU SEC Documents                          4.6
AGNU Stockholders' Meeting                  3.9
AGNU Stockholder Approval                   4.4
AGNU's Systems                              4.20(a)
AGNU Termination Breach                     10.1(c)
Agreement                                   Preamble
Bargaining Agreements                       10.1(j)
Blue Sky Laws                               11.3(b)
Broker Fee                                  3.5
Business Day                                11.3(c)
Cash Infusion                               6.18
Certificate of Merger                       1.2
Claim                                       6.7(a)
Closing                                     1.3
Closing Date                                1.3
Code                                        Recitals
Confidentiality Agreement                   11.1
Constituent Corporations                    1.1
Contingent Contribution                     8.2(b)
Contingent Period                           8.2(a)
Contingent Price                            8.2(a)
Contingent Repurchase                       8.2(a)
Control                                     11.3(d)
Controlled by                               11.3(d)
DGCL                                        Recitals
Drug Regulatory Agency                      3.21(a)
Effective Time                              1.2
Environmental Law                           3.18
Environmental Permits                       3.18
EPA                                         3.21(a)
ERISA                                       3.10(b)
Exchange Act                                3.5
FDA                                         3.21(a)
GAAP                                        3.6
Governmental Entity                         3.5
Hazardous Substance                         3.18
HSR Act                                     3.5
Indemnified Party                           6.7(a)
Liens                                       3.2
Material Adverse Effect                     11.3(e)
Merger                                      Recitals
Merger Shares                               2.1
Merger Sub                                  1.8
Order                                       10.1(d)
Ordinary Course of Business                 11.3(f)
Parent                                      Recitals
Person                                      11.3(g)
Proxy Statement                             3.9
Registrable Securities                      9.1(e)
Registration Demand                         9.1(a)
Registration Statement                      9.7(a)
Representatives                             6.1
Repurchase Price                            8.2(a)
SEC                                         4.6
Securities Act                              3.5
Share Adjustment                            2.2
Stock Repurchase                            8.1
Subsidiary                                  11.3(h)
Superior Proposal                           6.9(e)
Surviving Corporation                       1.1
Surviving Corporation Bylaws                1.5(b)
Surviving Corporation Certificate           1.5(a)


                                                            v

<PAGE>




Termination Date                            10.1(h)
Termination Fee                             6.13
under Common Control with                   11.3(d)
USDA                                        3.21(a)
VBSA                                        Preamble
Virbac                                      Preamble
Virbac Benefit Plans                        3.10(a)
Virbac Compensation Agreements              3.10(a)
Virbac Debt                                 6.18
Virbac Disclosure Schedule                  Article III
Virbac Financial Statements                 3.6
Virbac Intellectual Property                3.19
Virbac Material Contracts                   3.16
Virbac Pension Plans                        3.10(b)
Virbac Permits                              3.12
Virbac Required Approvals                   3.5
Virbac Stockholders                         2.1
Virbac's Systems                            3.20(a)
Virbac Termination Breach                   10.1(b)
Year 2000 Compliant                         3.20(c)



                                                            vi

<PAGE>



                           AGREEMENT AND PLAN OF MERGER


         AGREEMENT  AND PLAN OF MERGER (this  "Agreement"),  dated as of October
16, 1998, among Agri-Nutrition  Group Limited, a Delaware corporation  ("AGNU"),
Virbac  S.A.,  a French  corporation  ("VBSA"),  and  Virbac,  Inc.,  a Delaware
corporation ("Virbac").

         WHEREAS,  the respective Boards of Directors of AGNU and Virbac deem it
advisable, consistent with their respective long-term business strategies and in
the best interests of their respective stockholders,  that Virbac merge with and
into AGNU, or at Virbac's sole discretion a newly formed subsidiary of AGNU (the
"Merger"), pursuant to the terms and subject to the conditions set forth in this
Agreement  and in accordance  with the Delaware  General  Corporation  Laws (the
"DGCL"),  and such  Boards  of  Directors  have  approved  the  Merger  and this
Agreement;

         WHEREAS,  for federal  income tax  purposes,  it is  intended  that the
Merger will qualify as a tax-free  reorganization  pursuant to Section 368(a) of
the Internal  Revenue Code of 1986, as amended (the "Code"),  and this Agreement
is intended to be and is hereby adopted as a plan of reorganization;

         WHEREAS, as promptly as possible after the date hereof VBSA will form a
direct or indirect wholly owned subsidiary, which will be incorporated under the
laws of France or  another  jurisdiction  selected  by VBSA  ("Parent")  for the
purpose of holding the shares of AGNU to be issued in the Merger.

         NOW,  THEREFORE,  in  consideration  of the  foregoing  and the  mutual
representations,  warranties,  covenants and agreements  herein  contained,  and
intending to be legally  bound  hereby,  AGNU,  VBSA and Virbac  hereby agree as
follows:


                               ARTICLE I
                              THE MERGER

         Section 1.1. The Merger.  Upon the terms and subject to the  conditions
set forth in this  Agreement,  and in accordance with the DGCL, at the Effective
Time (as defined in Section 1.2), AGNU and Virbac will consummate the Merger. At
the  Effective  Time,  Virbac  will be merged with and into AGNU,  the  separate
corporate  existence of Virbac will cease,  AGNU will  continue as the surviving
corporation   (AGNU  and  Virbac  are  sometimes   referred  to  herein  as  the
"Constituent  Corporations"  and AGNU is  sometimes  referred  to  herein as the
"Surviving  Corporation") and AGNU will succeed to and assume all the rights and
obligations of Virbac in accordance with the DGCL. Following consummation of the
Merger, the Surviving Corporation will change its name to "Virbac Corporation."



                                                         1

<PAGE>




         Section  1.2.  Effective  Time.  As promptly as  practicable  after the
satisfaction  or waiver of the  conditions set forth in Article VII, the parties
will cause the Merger to be  consummated  by filing a certificate of merger (the
"Certificate of Merger") executed in accordance with the relevant  provisions of
the DGCL, together with any required related certificates, with the Secretary of
State of the State of  Delaware in such form as required by the DGCL and in such
form as approved by Virbac and AGNU prior to such filing. The Merger will become
effective (the  "Effective  Time") at the time the original,  properly  executed
Certificate  of Merger is accepted for filing by the office of the  Secretary of
State of the State of Delaware in accordance with the DGCL or at such other time
which the parties  hereto agree upon and designate in the  Certificate of Merger
as the Effective  Time.  AGNU will submit a Certificate  of Merger for filing at
the  time of the  Closing  and may  submit a draft  thereof  prior  thereto  for
pre-clearance.

         Section 1.3.  Closing.  Upon the terms and subject to the conditions of
this  Agreement,  the closing of the Merger (the "Closing") will take place at a
time,  on a date and at a place to be  mutually  agreed by AGNU and  Virbac  or,
failing such agreement,  on the second Business Day after satisfaction or waiver
of the conditions set forth in Article VII (the "Closing Date").

         Section  1.4.  Effects of the  Merger.  The Merger has the  effects set
forth in this Agreement, the Certificate of Merger and the applicable provisions
of the DGCL.

         Section 1.5. Certificate of Incorporation and Bylaws.  At the Effective
Time:

                  (a) The Restated  Certificate of Incorporation of AGNU will be
         amended and  restated in its entirety to read as set forth in Exhibit A
         attached  hereto  and,  as  so  amended  and  restated,   will  be  the
         certificate  of  incorporation   of  the  Surviving   Corporation  (the
         "Surviving  Corporation  Certificate") until amended in accordance with
         the terms thereof and applicable law.

                  (b) The By-Laws of AGNU will be amended and  restated in their
         entirety  to read as set forth in Exhibit B attached  hereto and, as so
         amended and restated,  will be the bylaws of the Surviving  Corporation
         (the "Surviving  Corporation  Bylaws") until amended in accordance with
         the terms thereof and applicable law.

         Section  1.6.  Directors.  All of the  directors  of AGNU  will  resign
effective  as of the  Effective  Time.  The number of  directors to serve on the
Board of Directors of the Surviving Corporation as of the Effective Time will be
five,  the members of each class of which will be the  individuals  set forth on
Schedule 1.6 hereto.  The  individual who will serve as Chairman of the Board of
Directors  of the  Surviving  Corporation  will be  designated  by Virbac.  Such
individuals  will hold office from the Effective Time until his or her successor
is duly appointed and qualified or until his or her earlier  death,  resignation
or  removal  in  accordance  with  the  Surviving  Corporation  Certificate  and
Surviving Corporation Bylaws.



                                                         2

<PAGE>




         Section 1.7. Officers.  The officers of the Surviving  Corporation will
be the individuals to be set forth on Schedule 1.7 by Virbac.  Such  individuals
will hold  office from the  Effective  Time until his or her  successor  is duly
appointed  and  qualified  or until his or her  earlier  death,  resignation  or
removal in accordance with the Surviving  Corporation  Certificate and Surviving
Corporation Bylaws.

         Section  1.8.  Alternative  Structure.  Virbac  may  elect  in its sole
discretion to effect the Merger with a newly formed  wholly owned  subsidiary of
AGNU  ("Merger  Sub"),  with  either  Virbac  or  Merger  Sub as the  "Surviving
Corporation",  in which event AGNU agrees to form Merger Sub, change AGNU's name
to "Virbac Corporation" and execute,  deliver an file such further documents and
do all acts necessary, desirable or proper to effect such structure.

                                 ARTICLE II
                          CONVERSION OF SECURITIES

         Section 2.1. Effect on Capital Stock. At the Effective Time and without
any action on the part of AGNU,  Parent,  Virbac or any holders of shares of the
Constituent  Corporations,  all of the issued and  outstanding  shares of Virbac
Common  Stock  immediately  prior to the  Effective  Time will be  automatically
converted  into the right to receive  that  number of duly  authorized,  validly
issued,  fully paid and nonassessable shares (the "Merger Shares") of the common
stock, par value $.01 per share, of AGNU (the "AGNU Common Stock"), equal to the
product of (a) the  difference  between  (i) the number of shares of AGNU Common
Stock issued and  outstanding  immediately  prior to the Effective Time and (ii)
1,000,000  and (b) 1.5. All of the shares of Virbac Common Stock to be converted
into  AGNU  Common  Stock  pursuant  to  this  Section  2.1  will  cease  to  be
outstanding,  will automatically be canceled and retired and will cease to exist
as of the  Effective  Time.  At the  Closing,  AGNU will  deliver or cause to be
delivered  to the holders of Virbac  Common  Stock (the  "Virbac  Stockholders")
stock certificates of AGNU representing such Virbac Stockholders'  proportionate
amount of Merger Shares.

         Section 2.2. Adjustments of Parent's Share Ownership in AGNU. After the
Effective  Time and until the final Share  Adjustment (as defined below) is made
following  the  expiration,  termination  or exercise of all options  (the "AGNU
Options") to purchase AGNU Common Stock that are outstanding as of the Effective
Time, AGNU will,  contemporaneously  with the issuance of AGNU Common Stock upon
the exercise of an AGNU Option or pursuant to that certain Agreement and Plan of
Merger dated as of July 16, 1997 among AGNU, Mardel Acquisition  Corporation and
Mardel Laboratories,  Inc., issue to Parent (a "Share Adjustment") an additional
number of shares of AGNU Common Stock,  if any,  equal to the product of (a) the
aggregate number of shares of AGNU Common Stock issued upon the exercise of such
AGNU Option and (b) 1.5.




                                                         3

<PAGE>



                                  ARTICLE III
               REPRESENTATIONS AND WARRANTIES OF PARENT AND VIRBAC

         Subject to the  exceptions  set forth and  identified in the disclosure
schedule  attached  hereto as  Appendix A (the  "Virbac  Disclosure  Schedule"),
Parent and Virbac represent and warrant to AGNU as follows:

         Section  3.1.  Organization  and  Authority.  Each  of  Virbac  and its
Subsidiaries  is a  corporation  duly  organized,  validly  existing and in good
standing under the laws of the  jurisdiction  of its  incorporation  and has all
requisite  corporate  power and  authority to carry on its business as now being
conducted.  Each of Virbac and its Subsidiaries is duly qualified or licensed to
do business and is in good standing in each  jurisdiction  in which the property
owned,  leased or operated by it or the nature of the  business  conducted by it
makes such qualification or licensing  necessary (each of which jurisdictions is
identified  in Item 3.1 of the Virbac  Disclosure  Schedule)  other than in such
jurisdictions  where the failure to be so qualified or licensed or to be in good
standing would not, in the aggregate, have a Material Adverse Effect (as defined
in Section 11.3(e).  Virbac has delivered to AGNU complete and correct copies of
its certificate of incorporation  and bylaws,  in each case, as in effect on the
date hereof.

         Section 3.2.  Subsidiaries.  Item 3.2 of the Virbac Disclosure Schedule
lists each direct and indirect Subsidiary of Virbac. Except as set forth in Item
3.2 of the Virbac  Disclosure  Schedule,  all the outstanding  shares of capital
stock of each Subsidiary are owned, directly or indirectly,  by Virbac, free and
clear  of  all  pledges,  claims,  liens,  charges,  encumbrances  and  security
interests of any kind or nature whatsoever (collectively, "Liens"), and are duly
authorized, validly issued, fully paid and nonassessable. Except for the capital
stock of its Subsidiaries  and except as otherwise  indicated in Item 3.2 of the
Virbac Disclosure  Schedule,  Virbac does not own,  directly or indirectly,  any
capital stock or other ownership interest in any corporation, partnership, joint
venture or other entity.

         Section  3.3.  Capitalization.  As of the date of this  Agreement,  the
authorized  capital  stock of Virbac  consists  of  10,000,000  shares of Virbac
Common Stock. At the close of business on October 16, 1998, (i) 8,399,810 shares
of Virbac Common Stock were issued and  outstanding and (ii) no shares of Virbac
Common Stock were held by Virbac in its treasury.  Except as set forth above, as
of October 16, 1998,  no shares of capital  stock or other voting  securities of
Virbac are  issued,  reserved  for  issuance or  outstanding.  Of the issued and
outstanding shares of capital stock of Virbac, 8,346,347 shares of Virbac Common
Stock are owned by VBSA (and, upon formation of Parent, will be owned by Parent)
and 53,463 shares of Virbac  Common Stock are owned by Mr. Roger D. Brandt.  All
outstanding  shares of Virbac Common Stock are duly authorized,  validly issued,
fully paid and nonassessable and not subject to preemptive rights.  There are no
bonds,  debentures,  notes or other  indebtedness  of Virbac having the right to
vote (or convertible into, or exercisable or exchangeable for, securities having
the right to vote) on any matters on which  stockholders  of Virbac may vote. As
of the date hereof, there are no securities,  options,  warrants, calls, rights,
commitments,  agreements,  arrangements  or  undertakings  of any  kind to which
Virbac or any of its Subsidiaries is a party or by which any of them is bound


                                                         4

<PAGE>




obligating Virbac or any of its Subsidiaries to issue, deliver or sell, or cause
to be issued,  delivered or sold,  additional  shares of capital  stock or other
voting  securities of Virbac or of any of its Subsidiaries or obligating  Virbac
or any of its  Subsidiaries  to  issue,  grant,  extend  or enter  into any such
security,  option, warrant, call, right, commitment,  agreement,  arrangement or
undertaking.  As of the  date  of  this  Agreement,  there  are  no  outstanding
contractual  obligations  of  Virbac  or any of its  Subsidiaries  to vote or to
dispose of any shares of the capital stock of any of Virbac's Subsidiaries.

         Section 3.4.  Authorization.  Virbac has the requisite  corporate power
and  authority  to execute and deliver  this  Agreement  and to  consummate  the
transactions  contemplated  hereby.  The execution,  delivery and performance of
this  Agreement  and the  consummation  by Virbac of the Merger and of the other
transactions  contemplated  hereby have been duly  authorized  by all  necessary
corporate action on the part of Virbac and no other corporate proceedings on the
part of Virbac are necessary to authorize  this  Agreement or to consummate  the
transactions  so  contemplated.  This  Agreement  has  been  duly  executed  and
delivered by Virbac and, assuming this Agreement constitutes a valid and binding
obligation  of AGNU,  constitutes  a valid and  binding  obligation  of  Virbac,
enforceable  against Virbac in accordance with its terms,  subject to applicable
bankruptcy,  insolvency, moratorium or other similar laws relating to creditors'
rights generally and to general principles of equity.

         Section 3.5. Consent and Approvals; No Violations.  Except for filings,
permits,  authorizations,  consents and approvals as may be required under,  and
other applicable  requirements of, the Hart-Scott-Rodino  Antitrust Improvements
Act of 1976,  as  amended  (the  "HSR  Act"),  the  Securities  Act of 1933 (the
"Securities Act"), the Securities Exchange Act of 1934 (the "Exchange Act"), the
AGNU Stockholder Approval,  applicable  requirements of the National Association
of Securities Dealers or the Nasdaq, foreign laws, the filing of the Certificate
of Merger and any required  related  certificates  under the DGCL, and the other
matters referred to in Item 3.5 of the Virbac Disclosure Schedule (collectively,
the "Virbac Required Approvals"), neither the execution, delivery or performance
of this Agreement by Virbac nor the  consummation by Virbac of the  transactions
contemplated  hereby  will (i)  conflict  with or  result  in the  breach of any
provision of the certificate of incorporation or bylaws of Virbac,  (ii) require
any permit,  authorization,  consent or  approval  of, or any filing  with,  any
federal, state or local government or any court, tribunal, administrative agency
or commission or other  governmental  or other  regulatory  authority or agency,
domestic  or foreign (a  "Governmental  Entity"),  except  where the  failure to
obtain  such  permits,  authorizations,  consents or  approvals  or to make such
filings would not have,  individually  or in the aggregate,  a Material  Adverse
Effect, (iii) result in a violation or breach of, or constitute, with or without
due  notice or lapse of time or both,  a  default,  or give rise to any right of
termination,  amendment, cancellation or acceleration under, any of the material
terms,  conditions or provisions of any loan or credit  agreement,  note,  bond,
mortgage,  indenture, lease, permit, concession,  franchise,  license, contract,
agreement  or other  instrument  or  obligation  to which  Virbac  or any of its
Subsidiaries  is a party or by which any of them or any of their  properties  or
assets may be bound,  or (iv)  violate  any  order,  writ,  injunction,  decree,
statute, rule or regulation applicable to Virbac, any of its Subsidiaries or any
of their


                                                         5

<PAGE>




respective properties or assets, except in the case of clauses (iii) or (iv) for
violations,  breaches  or  defaults  that  would  not,  individually  or in  the
aggregate, have a Material Adverse Effect.

         Section 3.6. Financial Statements. Virbac has heretofore made available
to AGNU true and complete copies of the following financial statements of Virbac
(the "Virbac  Financial  Statements"):  (i) audited balance sheet as of December
31, 1997 and related notes thereto, (ii) audited statement of operations for the
two years ended  December  31, 1997 and December  31,  1996,  and related  notes
thereto,  (iii) audited statement of cash flows for the two years ended December
31, 1997 and  December 31,  1996,  and related  notes  thereto,  (iv)  unaudited
balance  sheet  as of  August  31,  1998  and (v)  the  unaudited  statement  of
operations  for the eight months ended  August 31,  1998.  The Virbac  Financial
Statements,  as of the respective dates thereof,  (i) complied as to form in all
material  respects  with  applicable  accounting  requirements,  (ii)  have been
prepared in accordance with generally accepted  accounting  principles  ("GAAP")
applied on a  consistent  basis  during the periods  involved  and (iii)  fairly
present (subject, in the case of the unaudited statements, to normal, recurring,
year-end audit  adjustments) the consolidated  financial  position of Virbac and
its  consolidated  Subsidiaries  as at the dates  thereof  and the  consolidated
results of their  operations and cash flows for the periods  indicated  therein.
The unaudited financial statements by Virbac referred to in this Section 3.6 are
attached hereto as Item 3.6 of the Virbac Disclosure Schedule, provided however,
that Virbac will make available to AGNU, by October 30, 1998,  true and complete
copies of an unaudited statement of cash flows for the eight months ended August
31,  1998,  which shall then be deemed to be  included  in the Virbac  Financial
Statements.

         Section 3.7. Absence of Certain Changes or Events.  Except as set forth
in Item 3.7 of the Virbac Disclosure  Schedule,  since December 31, 1997, Virbac
and its  Subsidiaries  have conducted  their  respective  businesses only in the
Ordinary Course of Business,  and there has not been, in the aggregate,  (1) any
changes that have had a Material Adverse Effect,  (2) any  declaration,  setting
aside or payment  of any  dividend  or other  distribution  with  respect to its
capital stock or any  redemption,  purchase or other  acquisition  of any of its
capital  stock,  (3) any split,  combination or  reclassification  of any of its
capital  stock or any  issuance  or the  authorization  of any  issuance  of any
capital stock or any options,  warrants,  rights or other  securities in respect
of, in lieu of or in substitution  for, shares of its capital stock, (4) (A) any
granting  by Virbac or any of its  Subsidiaries  to any  officer or  employee of
Virbac or any of its Subsidiaries of any increase in compensation, except in the
Ordinary Course of Business,  including in connection with promotions consistent
with past practice or as was required under  employment  agreements in effect as
of December 31, 1997, (B) any granting by Virbac or any of its  Subsidiaries  to
any such officer or employee of any increase in  severance or  termination  pay,
except as was required under employment,  severance or termination agreements in
effect as of December 31, 1997 and previously made available to AGNU, or (C) any
entry by Virbac or any of its  Subsidiaries  into any  employment,  severance or
termination  agreement  with  any  such  officer  or  employee,  (5) any  event,
circumstance,  damage, destruction or loss, whether or not covered by insurance,
that has, or reasonably  could be expected to have, a Material  Adverse  Effect,
(6) any  revaluation  by  Virbac of any of its  material  assets  that  has,  or
reasonably  could  be  expected  to  have,  a  Material  Adverse  Effect  in the
aggregate, (7) any material change in


                                                         6

<PAGE>




accounting  methods,  principles  or  practices  by Virbac or (8) any  adoption,
amendment or termination of any bonus, profit sharing,  incentive,  severance or
other plan,  contract  or  commitment  for the benefit of any of its  directors,
officers or employees.

         Section  3.8. No  Undisclosed  Liabilities.  Except as set forth in the
Virbac Financial  Statements or in Item 3.8 of the Virbac  Disclosure  Schedule,
neither  Virbac nor any of its  Subsidiaries  has any  material  liabilities  or
obligations  of any nature,  whether or not accrued,  contingent  or  otherwise.
Since  December  31,  1997,  except for  liabilities  incurred  by Virbac or its
Subsidiaries in the Ordinary  Course of Business,  neither Virbac nor any of its
Subsidiaries has incurred any material liabilities of any nature, whether or not
accrued,  contingent or otherwise, and that in the aggregate would be reasonably
expected to have a Material Adverse Effect.

         Section 3.9. Proxy Statement. None of the information supplied or to be
supplied by Virbac  specifically  for inclusion or incorporation by reference in
the  Proxy  Statement  (the  "Proxy  Statement"),  will,  at the time the  Proxy
Statement  is first  mailed to the  stockholders  of AGNU and at the time of the
special  meeting  of  stockholders  of AGNU (the "AGNU  Stockholders'  Meeting")
called for the purpose of  approving  the Merger and the  issuance of the Merger
Shares,  contain any untrue  statement  of a material  fact or omit to state any
material  fact  required to be stated  therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made, not
misleading. Notwithstanding the foregoing, no representation or warranty is made
by Virbac with respect to statements made or  incorporated by reference  therein
based  on   information   supplied  by  AGNU   specifically   for  inclusion  or
incorporation by reference in the Proxy Statement.

         Section 3.10.     Benefit Plans.

                  (a)  Except  as  disclosed  in  Item  3.10(a)  of  the  Virbac
         Disclosure  Schedule,  since December 31, 1997,  there has not been any
         adoption or amendment  in any material  respect by Virbac or any of its
         Subsidiaries  of  any  bonus,   pension,   profit   sharing,   deferred
         compensation,  incentive compensation, stock ownership, stock purchase,
         stock option,  restricted stock, phantom stock, retirement,  severance,
         disability,  hospitalization,  medical or other  plan,  arrangement  or
         understanding  providing  benefits to any  current or former  employee,
         officer or director of Virbac or any of its Subsidiaries (collectively,
         "Virbac  Benefit  Plans").  Except as  disclosed in Item 3.10(a) of the
         Virbac  Disclosure  Schedule,  there exist no  employment,  consulting,
         severance,   change   in   control,   termination,   rabbi   trust   or
         indemnification  agreements,  arrangements  or  understandings  between
         Virbac or any of its  Subsidiaries  and any current or former employee,
         officer or director of Virbac or any of its Subsidiaries (collectively,
         "Virbac Compensation Agreements").

                  (b) Item 3.10(b) of the Virbac Disclosure  Schedule contains a
         list of all  "employee  pension  benefit  plans" (as defined in Section
         3(2) of the Employee Retirement Income Security Act of 1974, as amended
         ("ERISA"))  (sometimes  referred to herein as "Virbac Pension  Plans"),
         "employee  welfare benefit plans" (as defined in Section 3(1) of ERISA)
         and all other Virbac Benefit Plans  maintained,  or contributed  to, by
         Virbac or


                                                         7

<PAGE>




         any of its  Subsidiaries  for the  benefit  of any  current  or  former
         employees,  officers or directors of Virbac or any of its Subsidiaries.
         Virbac has delivered to AGNU true,  complete and correct  copies of (i)
         each  Virbac  Benefit  Plan (or,  in the case of any  unwritten  Virbac
         Benefit Plans,  descriptions  thereof) and all amendments thereto, (ii)
         the most  recent  annual  report on Form 5500 filed  with the  Internal
         Revenue  Service with respect to each Virbac  Benefit Plan (if any such
         report was required),  (iii) the most recent  summary plan  description
         for each Virbac Benefit Plan for which such summary plan description is
         required, (iv) each trust agreement and group annuity contract relating
         to any Virbac Benefit Plan and (v) each  Compensation  Agreement (or in
         the case of any unwritten Virbac Compensation Agreements,  descriptions
         thereof) and all amendments thereto.

                  (c)  Except  as  disclosed  in  Item  3.10(b)  of  the  Virbac
         Disclosure Schedule, all Virbac Pension Plans intended to qualify under
         the Code  have  been the  subject  of  determination  letters  from the
         Internal  Revenue  Service to the effect that such Virbac Pension Plans
         are  qualified   under  Section   401(a)  of  the  Code,  and  no  such
         determination  letter has been  revoked  nor, to the best  knowledge of
         Virbac, has revocation been threatened, nor has any such Virbac Pension
         Plan  been  amended  since  the date of its most  recent  determination
         letter in any respect that would  adversely  affect its  qualification.
         Except as disclosed in Item 3.10(a) of the Virbac Disclosure  Schedule,
         there is no  material  pending or, to  Virbac's  knowledge,  threatened
         litigation  relating to any of the Virbac  Benefit  Plans or the Virbac
         Compensation Agreements.

                  (d) No Virbac  Pension  Plan is  subject to Title IV of ERISA.
         None of Virbac,  any of its Subsidiaries,  any officer of Virbac or, to
         the  knowledge  of Virbac,  any trustee or  administrator  of an Virbac
         Benefit  Plan that is subject to ERISA,  has  engaged in a  "prohibited
         transaction"  (as  such  term is  defined  in  Section  406 of ERISA or
         Section   4975  of  the  Code)  or  any  other   breach  of   fiduciary
         responsibility  involving  such Virbac  Benefit Plan that could subject
         Virbac,  any of its Subsidiaries or any officer of Virbac or any of its
         Subsidiaries to any material tax or penalty on prohibited  transactions
         imposed by such Section 4975 or to any material liability under Section
         502(i) or (1) of ERISA.

                  (e)  With  respect  to any  Virbac  Benefit  Plan  that  is an
         employee  welfare benefit plan,  except as disclosed in Item 3.10(b) of
         the Virbac  Disclosure  Schedule,  (i) no such Virbac  Benefit  Plan is
         unfunded or funded through a "welfare  benefits  fund," as such term is
         defined in Section  419(e) of the Code,  (ii) each such Virbac  Benefit
         Plan that is a "group  health plan," as such term is defined in Section
         5000(b)(1)  of the Code,  complies in all  material  respects  with the
         applicable  requirements of Section 4980B(f) of the Code and (iii) each
         such Virbac Benefit Plan (including any such Plan covering  retirees or
         other former  employees) may be amended or terminated  without material
         liability to Virbac or any of its  Subsidiaries at any time.  Except as
         disclosed in Item 3.10(b) of the Virbac Disclosure Schedule,  there has
         been no  written  or, to  Virbac's  knowledge,  oral  communication  to
         employees by Virbac or any of its Subsidiaries that


                                                         8

<PAGE>




         would  reasonably  be expected to promise or guarantee  such  employees
         retiree  health or life  insurance or other retiree death benefits on a
         permanent basis.

                  (f)  Except  as  disclosed  in  Item  3.10(f)  of  the  Virbac
         Disclosure Schedule, the consummation of the transactions  contemplated
         by this  Agreement  will not (i) entitle any employees of Virbac or any
         of the  Subsidiaries  to severance  pay,  (ii)  accelerate  the time of
         payment or vesting or trigger any payment of  compensation  or benefits
         under,  or increase  the amount  payable or trigger any other  material
         obligation  pursuant to, any of the Virbac  Benefit Plans or the Virbac
         Compensation  Agreements  or (iii)  result  in any  material  breach or
         violation of, or a default  under,  any of the Virbac  Benefit Plans or
         the Virbac Compensation Agreements.

         Section  3.11.  Litigation.  Except  as set  forth in Item  3.11 of the
Virbac  Disclosure  Schedule,  there is no suit,  claim,  action,  proceeding or
investigation  pending or, to the best knowledge of Virbac,  threatened  against
Virbac or any of its  Subsidiaries  that could  reasonably  be expected to have,
directly or indirectly or in the aggregate, a Material Adverse Effect. Except as
set forth in Item 3.11 of the Virbac Disclosure Schedule, neither Virbac nor any
of its  Subsidiaries is subject to any outstanding  order,  writ,  injunction or
decree that could reasonably be expected to have, directly or indirectly, in the
aggregate, a Material Adverse Effect.

         Section 3.12.  Compliance  with  Applicable Law. Except as disclosed in
Item 3.12 of the Virbac  Disclosure  Schedule,  Virbac and its Subsidiaries hold
all permits, licenses, variances,  exemptions,  orders, concessions,  franchises
and  approvals  of all  Governmental  Entities  necessary  to own or lease their
respective  assets and to  conduct  their  respective  businesses  (the  "Virbac
Permits"),  except  for  failures  to hold such  permits,  licenses,  variances,
exemptions, orders, concessions, franchises and approvals that would not, in the
aggregate,  have a Material  Adverse Effect.  Virbac and its Subsidiaries are in
compliance with the terms of the Virbac Permits,  except where the failure so to
comply  would not have a Material  Adverse  Effect.  Except as disclosed in Item
3.12 of the Virbac Disclosure Schedule,  to the best knowledge of Virbac and its
Subsidiaries,  Virbac  and its  Subsidiaries  are in  compliance  with all laws,
ordinances or regulations of any Governmental  Entity,  except for such possible
violations  or  failures  of  compliance  that  would  not,  in  the  aggregate,
reasonably be expected to have a Material Adverse Effect. Except as set forth in
Item 3.12 of the Virbac Disclosure  Schedule,  as of the date of this Agreement,
to the best knowledge of Virbac or any of its Subsidiaries,  no investigation or
review  by  any  Governmental  Entity  with  respect  to  Virbac  or  any of its
Subsidiaries is pending,  threatened,  nor has any Governmental Entity indicated
an intention to conduct any such  investigation  or review,  other than, in each
case,  those the  outcome  of which  would not be  reasonably  expected,  in the
aggregate, to have a Material Adverse Effect.



                                                         9

<PAGE>




         Section 3.13.     Tax Matters.  Except as set forth in Item 3.13 of the
Virbac Disclosure Schedule:

                  (a) Each of  Virbac  and its  Subsidiaries  has  filed all tax
         returns  and  reports  required  to be filed  by it,  or  requests  for
         extensions  to file such  returns or reports have been timely filed and
         granted  and have not  expired,  and all tax  returns  and  reports are
         complete and accurate in all  respects,  except to the extent that such
         failures  to file or be  complete  and  accurate  in all  respects,  as
         applicable, individually or in the aggregate, would not have a Material
         Adverse Effect on Virbac.  Virbac and each of its Subsidiaries has paid
         (or Virbac  has paid on its  behalf)  or made  provision  for all taxes
         shown as due on such tax  returns and  reports.  No claim has been made
         since December 31, 1997 by an authority in a jurisdiction  where Virbac
         or any of its Subsidiaries  does not file tax returns that it is or may
         be subject to taxation by that jurisdiction.  The most recent financial
         statements of Virbac reflect adequate reserves for all taxes payable by
         Virbac  and its  Subsidiaries  for all  taxable  periods  and  portions
         thereof accrued through the date of such financial  statements,  and no
         deficiencies  for any taxes have been  proposed,  asserted  or assessed
         against  Virbac  or any of its  Subsidiaries  that  are not  adequately
         reserved for, except for  inadequately  reserved taxes and inadequately
         reserved deficiencies that would not, individually or in the aggregate,
         have a Material Adverse Effect on Virbac.  There are no liens for taxes
         (other than for current taxes not yet due and payable) on the assets of
         Virbac or its  Subsidiaries.  No  requests  for  waivers of the time to
         assess any taxes against  Virbac or any of its  Subsidiaries  have been
         granted or are pending,  except for requests with respect to such taxes
         that have been  adequately  reserved  for in the most recent  financial
         statements of Virbac,  or, to the extent not adequately  reserved,  the
         assessment of which would not, individually or in the aggregate, have a
         Material  Adverse  Effect  on  Virbac.  Neither  Virbac  nor any of its
         Subsidiaries is a party to or bound by any agreement  providing for the
         allocation  or  sharing  of  taxes.  Neither  Virbac  nor  any  of  its
         Subsidiaries  has  filed  a  consent  pursuant  to  or  agreed  to  the
         application  of  Section  341(f)  of the Code.  Each of Virbac  and its
         Subsidiaries  has  disclosed  on its  federal  income tax  returns  all
         positions   taken  therein  that  could  give  rise  to  a  substantial
         understatement of federal income tax within the meaning of Section 6662
         of the Code.  All taxes  that are  required  by the laws of the  United
         States,  any state or  political  subdivision  thereof,  or any foreign
         country  to  be  withheld  or   collected  by  Virbac  or  any  of  its
         Subsidiaries  have been duly  withheld or collected  and, to the extent
         required,  have been paid to the  proper  governmental  authorities  or
         properly  deposited as required by applicable  laws. None of Virbac and
         its  Subsidiaries (i) has been a member of an affiliated group filing a
         consolidated  federal  income tax return (other than a group the common
         parent of which was Virbac), or (ii) has any liability for the taxes of
         any  person  (other  than any of  Virbac  and its  Subsidiaries)  under
         Treasury  Regulation  Section  1.1502-6  (or any similar  provision  of
         state,  local,  or foreign  law),  as a  transferee  or  successor,  by
         contract or  otherwise.  For purposes of this  Agreement,  the term tax
         (including,  with correlative meaning, the terms "taxes" and "taxable")
         will include all federal,  state,  local, and foreign income,  profits,
         franchise, gross receipts, payroll, sales, employment, use, property,


                                                        10

<PAGE>




         withholding,  excise,  and other taxes,  duties,  or assessments of any
         nature whatsoever, together with all interest, penalties, and additions
         imposed with respect to such amounts.

                  (b) No  claim  has  been  made  since  August  31,  1998 by an
         authority in a  jurisdiction  where  Virbac or any of its  Subsidiaries
         does not pay sales  and/or  use taxes that it is or may be subject to a
         requirement to remit such taxes in that jurisdiction.  Since August 31,
         1998 Virbac and its  Subsidiaries  have collected  and/or  remitted any
         sales and/or use taxes required to be collected  and/or remitted by all
         states in which Virbac or its Subsidiaries conduct business activities,
         except to the extent that a failure to collect  and/or remit such sales
         and/or use taxes would not have a Material Adverse Effect on Virbac.

                  (c) None of the  compensation  paid by Virbac since January 1,
         1997,  and none of the  compensation,  if any, that may be payable as a
         result of the Merger  will be subject to the  limitations  set forth in
         Section 162(m) of the Code.

                  (d) No  amount  that  could be  received  (whether  in cash or
         property  or  the  vesting  of  property)  as a  result  of  any of the
         transactions contemplated by this Agreement by any employee, officer or
         director of Virbac or any of its  Subsidiaries  who is a  "disqualified
         individual"  (as such term is defined in Section 280G(c) of the Code or
         proposed  Treasury   Regulation  Section  1.280G-1)  under  any  Virbac
         Compensation Agreement or Virbac Benefit Plan currently in effect would
         be an "excess  parachute  payment"  (as such term is defined in Section
         280G(b)(l) of the Code).

                  (e) Virbac is not aware of any  circumstance  or event that is
         reasonably  likely to  prevent  the  Merger  from  being  treated  as a
         tax-free reorganization pursuant to Section 368(a) of the Code.

         Section 3.14. Customer Warranties.  Except as disclosed in Item 3.14 of
the Virbac Disclosure Schedule,  there are no pending, nor are there to the best
knowledge  of Virbac any  threatened,  material  claims under or pursuant to any
warranty,  whether  expressed or implied,  on products or services sold prior to
the date of this  Agreement by Virbac or any of its  Subsidiaries.  Item 3.14 of
the Virbac Disclosure Schedule identifies all such claims asserted from December
31, 1997 to the date of this Agreement and describes the resolution or status of
each such claim.

         Section 3.15. Brokers. No broker,  investment banker, financial advisor
or other Person other than  Fountain  Agricounsel,  LCC,  whose fee (the "Broker
Fee") will be paid by Virbac, is entitled to any broker's,  finder's,  financial
advisor's or other similar fee or commission in connection with the transactions
contemplated by this Agreement based upon  arrangements  made by or on behalf of
Virbac.  A true and complete  copy of Virbac's  engagement  letter with Fountain
Agricounsel, LCC is set forth as Item 3.15 of the Virbac Disclosure Schedule.



                                                        11

<PAGE>




         Section  3.16.  Material   Contracts.   Item  3.16  to  this  Agreement
constitutes a complete and accurate  list of each of the following  contracts or
agreements,  whether oral or written, express or implied, to which Virbac or any
of its  Subsidiaries is a party,  or by which Virbac or any of its  Subsidiaries
may be bound  involving  the  payment of (a) any note,  bond,  mortgage or other
instrument  which  evidences  or secures  indebtedness  of Virbac with a balance
outstanding  of  $25,000 or more,  which  cannot be  redeemed  or prepaid at the
option of Virbac for an amount which,  when added to the  outstanding  principal
balance, would be less than $50,000, (b) any lease of real or personal property,
or any sublease of real property, by Virbac, as lessee, pursuant to which Virbac
reasonably  anticipates  the  payment  of  aggregate  rent,  taxes,   insurance,
utilities  (if  applicable)  and other  charges  in excess of  $25,000  over the
remaining  term of the lease,  exclusive  of all  optional  renewal  periods and
optional extensions of the term (provided, however, that any such lease will not
be deemed a Virbac  Material  Contract in the event  Virbac has the  contractual
right to  terminate  the lease in question on 30 days'  notice or less,  without
incurring a penalty or premium in excess of  $50,000),  or (c) any lease of real
or personal  property,  or any sublease of real property,  by Virbac, as lessor,
pursuant to which Virbac reasonably anticipates the collection of aggregate rent
in excess of $50,000  over the  remaining  term of the lease,  exclusive  of all
optional renewal periods and extensions of the term (provided, however, that any
such lease will not be deemed a Virbac Material Contract in the event Virbac has
the  contractual  right to terminate the lease in question on 30 days' notice or
less  without  incurring a penalty or premium in excess of $25,000  (the "Virbac
Material  Contracts").  True and correct copies of the Virbac Material Contracts
and any agreements or amendments  thereto have been made available for review by
AGNU.   None  of  the  Virbac  Material   Contracts  is  currently   subject  to
renegotiation  or other adjustment of its terms either in whole or in part. None
of Virbac or its  Subsidiaries  is in  default  under any  contract,  agreement,
commitment, arrangement, lease, insurance policy or other instrument to which it
is a party, by which its respective assets,  business or operations may be bound
or  affected,  or under which it or any of its  respective  assets,  business or
operations  receives benefits,  which default,  in the aggregate,  is reasonably
likely to have a Material  Adverse Effect,  and there has not occurred any event
that,  with lapse of time or giving of notice or both,  would  constitute such a
default.  Except as  disclosed in Item 3.16 of the Virbac  Disclosure  Schedule,
neither  Virbac  nor any of its  Subsidiaries  is  subject  to, or bound by, any
contract  containing  covenants  which (i) limit the ability of Virbac or any of
its  Subsidiaries  to compete in any line of  business  or against any Person or
entity,  or  (ii)  involve  any  restriction  of the  method  by  which,  or the
geographical  area in which,  Virbac or any of its Subsidiaries may carry on its
business,  other than as may be required by law or any  applicable  Governmental
Entity.

         Section 3.17. Labor Matters. Neither Virbac nor any of its Subsidiaries
is a party to, or is bound by, any collective bargaining agreement,  contract or
other agreement or understanding with a labor union or labor  organization,  nor
is Virbac or any of its Subsidiaries the subject of a proceeding  asserting that
it or any such  Subsidiary  has committed an unfair labor  practice  (within the
meaning of the  National  Labor  Relations  Act) or seeking to compel it or such
Subsidiary to bargain with any labor  organization as to wages and conditions of
employment,  nor is there any strike or other labor dispute  involving Virbac or
any of its Subsidiaries,  pending or, to the best of its knowledge,  threatened,
nor is it aware of any activity involving its or any of the Subsidiaries'


                                                        12

<PAGE>




employees  seeking to certify a  collective  bargaining  unit or engaging in any
other  organization  activity.  Neither Virbac nor any of its  Subsidiaries  has
been,  within the last three  years,  nor,  to the  knowledge  of Virbac and its
Subsidiaries,  are they likely to become the  subject  of, or  involved  in, any
investigation, complaint or proceeding by the United States Department of Labor,
the Office of Federal  Contract  Compliance,  the Equal  Employment  Opportunity
Commission  or any  similar  federal,  state  or  local  body  dealing  with any
employment  policies and practices of Virbac or such  Subsidiaries or any Person
currently  employed by them,  except for any such  investigation,  complaint  or
proceeding  that, in the  aggregate,  would not be  reasonably  likely to have a
Material Adverse Effect.

         Section 3.18.  Environmental Matters.  Except as set forth in Item 3.18
of the  Virbac  Disclosure  Schedule  and  except  for  matters  which  are  not
reasonably  likely,  in the aggregate,  to have a Material  Adverse Effect:  (i)
neither the businesses of Virbac and its Subsidiaries nor the operation  thereof
violates any applicable environmental law and no condition or event has occurred
which,  with notice or the passage of time or both, would constitute a violation
of any  Environmental  Law;  (ii)  Virbac  and each of its  Subsidiaries  are in
possession  of all  permits  required  under any  applicable  Environmental  Law
("Environmental  Permits")  for the conduct or  operation of the  businesses  of
Virbac and each of its  Subsidiaries,  (iii) Virbac and each of its Subsidiaries
are in compliance  in all material  respects  with all of the  requirements  and
limitations included in the Environmental Permits, (iv) none of Virbac or any of
its Subsidiaries has stored or used any Hazardous Substance;  (v) neither Virbac
nor any of its  Subsidiaries  has received any written  notice,  demand  letter,
claim or request for information  alleging any violation of, or liability under,
any  Environmental  Law; and (vi) none of Virbac or any of its  Subsidiaries has
buried, dumped,  disposed,  spilled or released any pollutants,  contaminants or
hazardous wastes,  substances or materials on, beneath or adjacent to any of its
property or any property adjacent thereto.

         As used herein, the term "Environmental  Law" means any federal,  state
or local law, regulation,  order, decree, permit,  authorization,  common law or
agency requirement  relating to: (A) the protection of the environment,  health,
safety, or natural resources, (B) the handling, use, presence, disposal, release
or threatened release of any Hazardous  Substance or (C) noise, odor,  wetlands,
indoor  air,  pollution,  contamination  or any  injury  or  threat of injury to
persons or property  involving  any  Hazardous  Substance.  The term  "Hazardous
Substance" means any substance in any concentration  that is listed,  classified
or regulated pursuant to any Environmental Law.

         Section  3.19.   Virbac   Intellectual   Property.   The  term  "Virbac
Intellectual   Property"  means  all  of  Virbac's  and  its  Subsidiaries'  (i)
registered or  unregistered  trademarks and other marks,  service  marks,  trade
names or other trade rights, and pending applications for any such registration,
(ii) rights in or to patents and  copyrights and pending  applications  therefor
and (iii) rights to other trademarks, service marks and other marks, trade names
and  other  trade  rights  and  all  other  trade   secrets,   designs,   plans,
specifications,  technology,  know-how,  methods,  designs,  concepts, and other
proprietary rights, whether or not registered.  Except as set forth in Item 3.19
of the Virbac  Disclosure  Schedule,  (a) Virbac and each of its Subsidiaries is
the sole


                                                        13

<PAGE>




owner of and has the  exclusive  right to use its Virbac  Intellectual  Property
free from any  Liens,  (b) no Person has a right to receive a royalty or similar
payment in respect of any Virbac Intellectual Property,  whether pursuant to any
contractual  arrangements  entered into by Virbac or any of its  Subsidiaries or
otherwise, (c) to Virbac's knowledge,  none of the Virbac Intellectual Property,
nor  Virbac's or any of its  Subsidiaries'  use  thereof,  infringe or otherwise
violate the rights of any third party, and (d) to Virbac's knowledge,  Virbac is
not  aware  of  any  infringement  or  violation  of  Virbac's  or  any  of  its
Subsidiaries'  rights in or to the  Virbac  Intellectual  Property  by any third
party.  Virbac  and its  Subsidiaries  have the  exclusive  right to use,  sell,
license and dispose of, and has the right to bring actions for  infringement of,
the Virbac Intellectual Property.

         Section 3.20.     Year 2000 Issues.

                  (a) Virbac has  conducted an inventory  and  assessment of all
         software,  computers,  network  equipment,   technical  infrastructure,
         production  equipment and other equipment and systems that are material
         to the operation of the business of Virbac and that rely on, utilize or
         perform date or time processing ("Virbac's Systems").

                  (b) Any  failure  of any of  Virbac's  Systems to be Year 2000
         Complaint will not cause a Material Adverse Effect.

                  (c) "Year 2000 Compliant" means the party's system will at all
         times: (1) consistently and accurately handle and process date and time
         information  and data values before,  during and after January 1, 2000,
         including  but not  limited to  accepting  date input,  providing  date
         output,  and performing  calculations on or utilizing dates or portions
         of  dates;   (2)  function   accurately  and  in  accordance  with  its
         specifications  without  interruption,  abnormal endings,  degradation,
         change in operation or other impact,  or  disruption of other  systems,
         resulting from processing date or time data with values, before, during
         and after January 1, 2000;  (3) respond to and process  two-digit  date
         input in a way that resolves any ambiguity as to century; and (4) store
         and provide output of date  information in ways that are unambiguous as
         to century.

         Section 3.21.     Regulatory Compliance.

                  (a) To Virbac's  knowledge,  since the most recent  audit,  if
         any, by the United States Department of Agriculture ("USDA"),  Food and
         Drug Administration ("FDA"), Environmental Protection Agency ("EPA") or
         any other federal,  state, local or foreign governmental entity that is
         concerned with the safety,  efficacy,  reliability or  manufacturing of
         animal health or  pharmaceutical  products  (each,  a "Drug  Regulatory
         Agency"),  no act or omission has occurred at Virbac's facilities which
         would subject Virbac to  noncompliance  with the standards of the USDA,
         FDA, EPA or any other applicable Drug Regulatory Agency.

                  (b) Item 3.21 of the Virbac  Disclosure  Schedule sets forth a
         list, for the period  between  August 31, 1998 and the date hereof,  of
         (i) all regulatory or warning letters,


                                                        14

<PAGE>




         notices of adverse  findings and similar  letters or notices  issued by
         the USDA, FDA, EPA or Drug Regulatory  Agency, if any, to Virbac or any
         of its Subsidiaries that would have a Material Adverse Effect, (ii) all
         product recalls, notifications and safety alerts conducted by Virbac or
         any of its  Subsidiaries,  whether or not required by the USDA,  FDA or
         EPA or Drug Regulatory  Agency, and any request from the USDA, FDA, EPA
         or  any  Drug  Regulatory  Agency  requesting  Virbac  or  any  of  its
         Subsidiaries to cease to investigate, test or market any product, which
         recalls, notifications, safety alerts or requests would have a Material
         Adverse  Effect,  and (iii) any criminal  injunctive,  seizure or civil
         penalty  actions begun or threatened by the USDA,  FDA, EPA or any Drug
         Regulatory  Agency against Virbac or any of its  Subsidiaries and known
         by Virbac or any of its  Subsidiaries  and all related  consent decrees
         issued with respect to Virbac or any of its Subsidiaries. Copies of all
         documents referred to in Item 3.21 have been made available to AGNU.

         Section 3.22.     State Takeover Statutes Inapplicable.  As of the date
hereof  and at  all times on or prior to the Effective Time, Section 203 of  the
DGCL   is,   and  will  be, inapplicable to the  Merger and   the   transactions
contemplated thereby.


                                   ARTICLE IV
                     REPRESENTATIONS AND WARRANTIES OF AGNU

         Subject to the  exceptions  set forth and  identified in the disclosure
schedule  attached hereto as Appendix B (the "AGNU Disclosure  Schedule"),  AGNU
represents and warrants to Parent and Virbac as follows:

         Section 4.1.  Organization  and Authority.  AGNU is a corporation  duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction  of its  incorporation  and has all requisite  corporate  power and
authority  to  carry  on its  business  as now  being  conducted.  AGNU  is duly
qualified or licensed to do business and in good  standing in each  jurisdiction
in which the  property  owned,  leased or  operated  by it or the  nature of the
business conducted by it makes such  qualification or licensing  necessary other
than in such jurisdictions where any failure to be so duly qualified or licensed
and in good  standing  would not,  in the  aggregate,  have a  Material  Adverse
Effect.  AGNU has  delivered  to  Virbac  complete  and  correct  copies  of its
certificate of incorporation  and bylaws, in each case, as in effect on the date
hereof.

         Section 4.2.  Subsidiaries.  Item 4.2 of the AGNU  Disclosure  Schedule
lists each direct and indirect  Subsidiary of AGNU.  Except as set forth in Item
4.2 of the AGNU Disclosure Schedule, all the outstanding shares of capital stock
of each Subsidiary are owned, directly or indirectly, by AGNU, free and clear of
all  Liens,   and  are  duly   authorized,   validly  issued,   fully  paid  and
nonassessable.  Except for the capital stock of its  Subsidiaries  and except as
otherwise indicated in Item 4.2 of the AGNU Disclosure  Schedule,  AGNU does not
own,  directly or indirectly,  any capital stock or other ownership  interest in
any corporation, partnership, joint venture or other entity.



                                                        15

<PAGE>




         Section  4.3.  Capitalization.  The  authorized  capital  stock of AGNU
consists of  20,000,000  shares of AGNU  Common  Stock and  2,000,000  shares of
preferred stock, par value $.01 per share ("AGNU Preferred Stock"),  of AGNU. At
the close of business  on October 16,  1998,  (i)  9,384,480  shares of the AGNU
Common Stock were issued, (ii) no shares of the AGNU Preferred Stock were issued
and outstanding,  (iii) 129,961 shares of AGNU Common Stock were held by AGNU in
its treasury (none of which will be held in Treasury as of the Effective  Time),
and (iv) no shares of AGNU  Preferred  Stock were held by AGNU in its  treasury.
Except as set forth above and in Item 4.3 of the AGNU Disclosure Schedule, as of
October 16, 1998, no shares of capital stock or other voting  securities of AGNU
are issued,  reserved for issuance or  outstanding.  All  outstanding  shares of
capital  stock of AGNU are  duly  authorized,  validly  issued,  fully  paid and
nonassessable and not issued in violation of any preemptive rights. There are no
bonds, debentures,  notes or other indebtedness of AGNU having the right to vote
(or convertible into, or exercisable or exchangeable for,  securities having the
right to vote) on any matters on which  stockholders of AGNU may vote.  Attached
to Item 4.3 of the AGNU Disclosure  Schedule is a schedule of (i) shares of AGNU
Common Stock reserved for issuance upon exercise of options pursuant to the AGNU
Stock  Option  Plans and (ii)  options to purchase  shares of AGNU Common  Stock
containing  the name of each  Optionee,  the date of  grant,  vesting  schedule,
exercise price and option termination date.

         Section 4.4. Authorization.  AGNU has the requisite corporate power and
authority to execute and deliver this Agreement and, subject to the approval and
adoption of this  Agreement  and the issuance of the Merger  Shares  pursuant to
this  Agreement  by the  holders  of a majority  of the votes of the  holders of
shares of AGNU Common Stock cast thereon (the "AGNU Stockholder  Approval"),  to
consummate the transactions  contemplated  hereby.  The execution,  delivery and
performance of this Agreement and the  consummation by AGNU of the Merger and of
the transactions  contemplated hereby have been duly authorized by all necessary
corporate  action on the part of AGNU and no other corporate  proceedings on the
part of AGNU are  necessary to authorize  this  Agreement or to  consummate  the
transactions  so  contemplated.  This  Agreement  has  been  duly  executed  and
delivered by AGNU and,  assuming this Agreement  constitutes a valid and binding
obligation of Parent and Virbac,  constitutes a valid and binding  obligation of
AGNU,  enforceable  against  AGNU in  accordance  with  its  terms,  subject  to
applicable bankruptcy,  insolvency, moratorium or other similar laws relating to
creditors' rights generally and to general principles of equity.

         Section 4.5. Consents and Approvals; No Violations. Except for filings,
permits,  authorizations,  consents and approvals as may be required under,  and
other applicable  requirements of, the Securities Act, the Exchange Act, the HSR
Act,  the  filing  of  the  Certificate  of  Merger  and  any  required  related
certificate  under  the  DGCL,  the  laws  of  other  states  in  which  AGNU is
incorporated  or qualified to do or is doing  business and state  takeover laws,
such  filings  and  approvals  as may be  required  under  state  laws in  those
jurisdictions  in which Virbac or any of its Subsidiaries is licensed or holds a
permit to engage in business  and the other  matters  referred to in Item 4.5 of
the AGNU  Disclosure  Schedule  (collectively,  the "AGNU  Required  Consents"),
neither the execution, delivery or performance of this Agreement by AGNU nor the
consummation by AGNU of the transactions  contemplated  hereby will (i) conflict
with or result


                                                        16

<PAGE>




in any breach of any provision of the certificate of  incorporation or bylaws of
AGNU,  (ii)  require any permit,  authorization,  consent or approval of, or any
filing with, any  Governmental  Entity,  except where the failure to obtain such
permits, authorizations, consents or approvals or to make such filings would not
have,  individually or in the aggregate, a Material Adverse Effect, (iii) result
in a violation or breach of, or constitute,  with or without due notice or lapse
of time or both, a default, or give rise to any right of termination, amendment,
cancellation or acceleration,  under, any of the terms, conditions or provisions
of any loan or  credit  agreement,  note,  bond,  mortgage,  indenture,  permit,
concession,  franchise,  license, lease, contract, agreement or other instrument
or  obligation to which AGNU or any of its  Subsidiaries  is a party or by which
any of them or any of their  properties  or assets may be bound or (iv)  violate
any order, writ, injunction,  decree,  statute, rule or regulation applicable to
AGNU, any of its  Subsidiaries or any of their  properties or assets,  except in
the case of clauses (iii) and (iv) for  violations,  breaches or defaults  which
would not, individually or in the aggregate, have a Material Adverse Effect.

         Section 4.6. SEC Reports and Financial Statements.  AGNU has filed with
the SEC, and has heretofore  made available to Virbac,  true and complete copies
of all forms, reports, schedules,  statements and other documents required to be
filed  with the  Securities  and  Exchange  Commission  (the  "SEC") by it since
January  1, 1996  under the  Exchange  Act or the  Securities  Act (such  forms,
reports,  schedules,  statements  and other  documents,  including any financial
statements  or  schedules  included  therein,  are referred to as (the "AGNU SEC
Documents").  Except to the extent revised or superseded by a subsequently filed
AGNU SEC  Document,  the  AGNU SEC  Documents,  at the time  filed,  (i) did not
contain any untrue statement of a material fact or omit to state a material fact
required  to be stated  therein  or  necessary  in order to make the  statements
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading  and (ii)  complied  in all  material  respects  with the  applicable
requirements of the Exchange Act and the Securities Act, as the case may be, and
the  applicable  rules and  regulations  of the SEC  thereunder.  The  financial
statements  of AGNU  included  or  incorporated  by  reference  in the  AGNU SEC
Documents (i) as of the time filed, complied as to form in all material respects
with  applicable  accounting  requirements  and with  the  published  rules  and
regulations  of the SEC  with  respect  thereto,  (ii)  have  been  prepared  in
accordance with GAAP applied on a consistent  basis during the periods  involved
(except  as may be  indicated  in the  notes  thereto  or,  in the  case  of the
unaudited  statements,  as  permitted  by Form 10-Q of the SEC) and (iii) fairly
present (subject, in the case of the unaudited statements, to normal, recurring,
year-end audit adjustments) the consolidated  financial position of AGNU and its
consolidated  Subsidiaries as at the dates thereof and the consolidated  results
of their operations and cash flows for the periods indicated therein.

         Section  4.7.  Absence  of Certain  Changes  or  Events.  Except (i) as
disclosed in the AGNU SEC Documents  filed and publicly  available  prior to the
date of this Agreement and (ii) as set forth in Item 4.7 of the AGNU  Disclosure
Schedule, since the date of the most recent financial statements included in the
AGNU SEC Documents,  AGNU and its  Subsidiaries  have conducted their respective
businesses only in the Ordinary  Course of Business,  and there has not been, in
the aggregate,  (1) any changes that have had a Material Adverse Effect, (2) any
declaration, setting aside or payment of any dividend or other distribution with
respect to its capital stock or any redemption, purchase or other acquisition of
any of its capital stock (except


                                                        17

<PAGE>




for its  ordinary  quarterly  cash  dividends  with  respect to the AGNU  Common
Stock),  (3) any split,  combination or  reclassification  of any of its capital
stock or any issuance or the  authorization of any issuance of any capital stock
or any options,  warrants,  rights or other securities in respect of, in lieu of
or in  substitution  for,  shares of its capital stock,  (4) (A) any granting by
AGNU or any of its Subsidiaries to any officer or employee of AGNU or any of its
Subsidiaries of any increase in  compensation,  except in the Ordinary Course of
Business,  including in connection with promotions consistent with past practice
or as was required under  employment  agreements in effect as of the date of the
most recent  financial  statements  included in the AGNU SEC Documents,  (B) any
granting by AGNU or any of its  Subsidiaries  to any such officer or employee of
any increase in  severance  or  termination  pay,  except as was required  under
employment,  severance or termination agreements in effect as of the date of the
most  recent  financial  statements  included  in the  AGNU  SEC  Documents  and
previously  made  available  to  AGNU,  or (C) any  entry  by AGNU or any of its
Subsidiaries  into any employment,  severance or termination  agreement with any
such officer or employee, (5) any event,  circumstance,  damage,  destruction or
loss,  whether or not covered by  insurance,  that has, or  reasonably  could be
expected  to have,  a  Material  Adverse  Effect,  (6) any  material  change  in
accounting  methods,  principles  or  practices  by AGNU  or (7)  any  adoption,
amendment or termination of any bonus, profit sharing,  incentive,  severance or
other plan,  contract  or  commitment  for the benefit of any of its  directors,
officers or employees.

         Section 4.8. No Undisclosed Liabilities.  Except as set forth in AGNU's
audited,  consolidated  financial statements included in AGNU's Annual Report on
Form 10-K filed for the fiscal year ended October 31, 1997 or in Item 4.8 of the
AGNU  Disclosure  Schedule,  neither  AGNU nor any of its  Subsidiaries  has any
material  liabilities  or  obligations  of any nature,  whether or not  accrued,
contingent or otherwise.  Since the date of the most recent financial statements
included  in the  AGNU  SEC  Documents,  except  as set  forth  in the  AGNU SEC
Documents and except for  liabilities  incurred by AGNU and its  Subsidiaries in
the Ordinary Course of Business,  neither AGNU nor any of its  Subsidiaries  has
incurred  any  material  liabilities  of any  nature,  whether  or not  accrued,
contingent  or otherwise  that would be  reasonably  expected to have a Material
Adverse Effect.

         Section 4.9. Proxy Statement. None of the information supplied or to be
supplied by AGNU specifically for inclusion or incorporation by reference in the
Proxy  Statement,  will, at the time the Proxy  Statement is first mailed to the
stockholders of AGNU and at the time of the AGNU Stockholders' Meeting,  contain
any untrue  statement  of a  material  fact or omit to state any  material  fact
required  to be stated  therein  or  necessary  in order to make the  statements
therein,  in  light  of  the  circumstances  under  which  they  are  made,  not
misleading.  The Proxy Statement will comply with the Exchange Act and the rules
and regulations thereunder.  Notwithstanding the foregoing, no representation or
warranty is made by AGNU with  respect to  statements  made or  incorporated  by
reference therein based on information supplied by Parent or Virbac specifically
for inclusion or incorporation by reference in the Proxy Statement.



                                                        18

<PAGE>




         Section 4.10.     Benefit Plans.

                  (a) Except as  disclosed  in Item 4.10 of the AGNU  Disclosure
         Schedule,  since February 11, 1998,  there has not been any adoption or
         amendment in any material respect by AGNU or any of its Subsidiaries of
         any bonus, pension,  profit sharing,  deferred compensation,  incentive
         compensation, stock ownership, stock purchase, stock option, restricted
         stock,    phantom    stock,    retirement,    severance,    disability,
         hospitalization,  medical or other plan,  arrangement or  understanding
         providing  benefits  to any  current  or former  employee,  officer  or
         director  of  AGNU  or  any of its  Subsidiaries  (collectively,  "AGNU
         Benefit  Plans").  Except  as  disclosed  in  Item  4.10  of  the  AGNU
         Disclosure Schedule, there exist no employment,  consulting, severance,
         change in control,  termination or  indemnification  agreements,  rabbi
         trust,  arrangements  or  understandings  between  AGNU  or  any of its
         Subsidiaries and any current or former employee, officer or director of
         AGNU  or any  of its  Subsidiaries  (collectively,  "AGNU  Compensation
         Agreements").

                  (b) Item 4.10 of the AGNU Disclosure  Schedule contains a list
         of all "employee  pension benefit plans" (as defined in Section 3(2) of
         ERISA)  (sometimes   referred  to  herein  as  "AGNU  Pension  Plans"),
         "employee  welfare benefit plans" (as defined in Section 3(1) of ERISA)
         and all other AGNU Benefit Plans maintained, or contributed to, by AGNU
         or any of its  Subsidiaries  for the  benefit of any  current or former
         employees,  officers or directors  of AGNU or any of its  Subsidiaries.
         AGNU has delivered to Virbac true,  complete and correct  copies of (i)
         each AGNU Benefit Plan (or, in the case of any  unwritten  AGNU Benefit
         Plans,  descriptions thereof) and all amendments thereto, (ii) the most
         recent  annual  report on Form 5500  filed  with the  Internal  Revenue
         Service  with respect to each AGNU Benefit Plan (if any such report was
         required), (iii) the most recent summary plan description for each AGNU
         Benefit Plan for which such summary plan description is required,  (iv)
         each trust  agreement and group annuity  contract  relating to any AGNU
         Benefit Plan and (v) each Compensation Agreement (or in the case of any
         unwritten AGNU Compensation  Agreements,  descriptions thereof) and all
         amendments thereto.

                  (c) Except as  disclosed  in Item 4.10 of the AGNU  Disclosure
         Schedule,  all AGNU Pension  Plans  intended to qualify  under the Code
         have  been the  subject  of  determination  letters  from the  Internal
         Revenue  Service  to the  effect  that  such  AGNU  Pension  Plans  are
         qualified  under Section 401(a) of the Code, and no such  determination
         letter  has been  revoked  nor,  to the  best  knowledge  of AGNU,  has
         revocation  been  threatened,  nor has any such AGNU  Pension Plan been
         amended since the date of its most recent  determination  letter in any
         respect  that  would  adversely  affect  its  qualification.  Except as
         disclosed  in Item 4.10 of the AGNU  Disclosure  Schedule,  there is no
         material  pending  or,  to  AGNU's  knowledge,   threatened  litigation
         relating  to any of the AGNU  Benefit  Plans  or the AGNU  Compensation
         Agreements.

                  (d) No AGNU Pension Plan is subject to Title IV of ERISA. None
         of AGNU,  any of its  Subsidiaries,  any  officer  of AGNU  or,  to the
         knowledge of AGNU, any trustee


                                                        19

<PAGE>




         or  administrator of an AGNU Benefit Plan that is subject to ERISA, has
         engaged  in a  "prohibited  transaction"  (as such term is  defined  in
         Section 406 of ERISA or Section  4975 of the Code) or any other  breach
         of fiduciary responsibility involving such AGNU Benefit Plan that could
         subject AGNU, any of its  Subsidiaries or any officer of AGNU or any of
         its   Subsidiaries  to  any  material  tax  or  penalty  on  prohibited
         transactions  imposed by such Section 4975 or to any material liability
         under Section 502(i) or (1) of ERISA.

                  (e) With  respect to any AGNU Benefit Plan that is an employee
         welfare  benefit  plan,  except as  disclosed  in Item 4.10 of the AGNU
         Disclosure  Schedule,  (i) no such AGNU  Benefit  Plan is  unfunded  or
         funded  through a "welfare  benefits  fund," as such term is defined in
         Section 419(e) of the Code,  (ii) each such AGNU Benefit Plan that is a
         "group health  plan," as such term is defined in Section  5000(b)(1) of
         the  Code,  complies  in all  material  respects  with  the  applicable
         requirements  of Section  4980B(f) of the Code and (iii) each such AGNU
         Benefit Plan (including any such Plan covering retirees or other former
         employees) may be amended or terminated  without material  liability to
         AGNU or any of its  Subsidiaries  at any time.  Except as  disclosed in
         Item 4.10 of the AGNU  Disclosure  Schedule,  there has been no written
         or, to AGNU's knowledge, oral communication to employees by AGNU or any
         of its  Subsidiaries  that would  reasonably  be expected to promise or
         guarantee  such  employees  retiree  health or life  insurance or other
         retiree death benefits on a permanent basis.

                  (f) Except as  disclosed  in Item 4.10 of the AGNU  Disclosure
         Schedule,  the  consummation of the  transactions  contemplated by this
         Agreement  will not (i)  entitle  any  employees  of AGNU or any of the
         Subsidiaries  to severance pay, (ii)  accelerate the time of payment or
         vesting or trigger  any  payment of  compensation  or  benefits  under,
         increase the amount  payable or trigger any other  material  obligation
         pursuant  to, any of the AGNU  Benefit  Plans or the AGNU  Compensation
         Agreements or (iii) result in any material breach or violation of, or a
         default under,  any of the AGNU Benefit Plans or the AGNU  Compensation
         Agreements.

         Section 4.11. Litigation.  Except as set forth in Item 4.11 of the AGNU
Disclosure   Schedule,   there  is  no  suit,  claim,   action,   proceeding  or
investigation pending or, to the best knowledge of AGNU, threatened against AGNU
or any of its Subsidiaries  that could reasonably be expected to have,  directly
or indirectly or in the  aggregate,  a Material  Adverse  Effect.  Except as set
forth in Item 4.11 of the AGNU Disclosure Schedule,  neither AGNU nor any of its
Subsidiaries is subject to any  outstanding  order,  writ,  injunction or decree
that could  reasonably be expected to have,  directly or  indirectly,  or in the
aggregate, a Material Adverse Effect.

         Section 4.12. Compliance with Applicable Law. AGNU and its Subsidiaries
hold  all  permits,  licenses,  variances,   exemptions,   orders,  concessions,
franchises and approvals of all Governmental  Entities necessary to own or lease
their respective  assets and to conduct their  respective  businesses (the "AGNU
Permits"),  except  for  failures  to hold such  permits,  licenses,  variances,
exemptions, orders, concessions, franchises and approvals that would not, in the
aggregate,  have a Material  Adverse Effect.  AGNU and its  Subsidiaries  are in
compliance with


                                                        20

<PAGE>




the terms of the AGNU  Permits,  except where the failure so to comply would not
have a Material  Adverse  Effect.  Except as  disclosed in Item 4.12 of the AGNU
Disclosure  Schedule,  to the best knowledge of AGNU and its Subsidiaries,  AGNU
and its Subsidiaries are in compliance with all laws,  ordinances or regulations
of any Governmental  Entity,  except for such possible violations or failures of
compliance  that would not, in the  aggregate,  reasonably be expected to have a
Material Adverse Effect. Except as set forth in Item 4.12 of the AGNU Disclosure
Schedule, as of the date of this Agreement, to the best knowledge of AGNU or any
of its Subsidiaries,  no investigation or review by any Governmental Entity with
respect to AGNU or any of its Subsidiaries is pending or threatened, nor has any
Governmental  Entity indicated an intention to conduct any such investigation or
review,  other  than,  in each case,  those the  outcome  of which  would not be
reasonably expected, in the aggregate, to have a Material Adverse Effect.

         Section 4.13.      Tax Matters. Except as set forth in Item 4.13 of the
AGNU Disclosure Schedule:

                  (a)  Each  of AGNU  and its  Subsidiaries  has  filed  all tax
         returns  and  reports  required  to be filed  by it,  or  requests  for
         extensions  to file such  returns or reports have been timely filed and
         granted  and have not  expired,  and all tax  returns  and  reports are
         complete and accurate in all  respects,  except to the extent that such
         failures  to file or be  complete  and  accurate  in all  respects,  as
         applicable, individually or in the aggregate, would not have a Material
         Adverse Effect on AGNU. AGNU and each of its  Subsidiaries has paid (or
         AGNU has paid on its behalf) or made  provision  for all taxes shown as
         due on such tax returns and reports.  No claim has been made since July
         31, 1998 by an  authority  in a  jurisdiction  where AGNU or any of its
         Subsidiaries  does not file tax returns that it is or may be subject to
         taxation by that  jurisdiction.  The most recent  financial  statements
         contained in AGNU's  Annual  Report on Form 10-K ("AGNU 1997 10-K") for
         the fiscal year ended  October 31, 1997 reflect  adequate  reserves for
         all taxes payable by AGNU and its  Subsidiaries for all taxable periods
         and  portions  thereof  accrued  through  the  date of  such  financial
         statements,  and no  deficiencies  for any taxes  have  been  proposed,
         asserted or assessed against AGNU or any of its  Subsidiaries  that are
         not adequately reserved for, except for inadequately reserved taxes and
         inadequately  reserved  deficiencies that would not, individually or in
         the aggregate,  have a Material  Adverse  Effect on AGNU.  There are no
         liens for taxes (other than for current  taxes not yet due and payable)
         on the assets of AGNU or its  Subsidiaries.  No requests for waivers of
         the time to assess any taxes  against  AGNU or any of its  Subsidiaries
         have been granted or are pending,  except for requests  with respect to
         such taxes that have been  adequately  reserved  for in the most recent
         financial  statements  contained in the AGNU SEC Documents,  or, to the
         extent not  adequately  reserved,  the  assessment  of which would not,
         individually  or in the  aggregate,  have a Material  Adverse Effect on
         AGNU.  Except as set forth in the AGNU 1997 10-K,  neither AGNU nor any
         of its  Subsidiaries is a party to or bound by any agreement  providing
         for the  allocation  or sharing of taxes.  Neither  AGNU nor any of its
         Subsidiaries  has  filed  a  consent  pursuant  to  or  agreed  to  the
         application  of  Section  341(f)  of the  Code.  Each of  AGNU  and its
         Subsidiaries  has  disclosed  on its  federal  income tax  returns  all
         positions taken therein that could give rise to a substantial


                                                        21

<PAGE>




         understatement of federal income tax within the meaning of Section 6662
         of the Code.  All taxes  that are  required  by the laws of the  United
         States,  any state or  political  subdivision  thereof,  or any foreign
         country to be withheld or collected by AGNU or any of its  Subsidiaries
         have been duly withheld or collected and, to the extent required,  have
         been paid to the proper governmental  authorities or properly deposited
         as required by applicable  laws. None of AGNU and its  Subsidiaries (i)
         has been a member of an affiliated group filing a consolidated  federal
         income tax return  (other  than a group the common  parent of which was
         AGNU),  or (ii) has any  liability  for the taxes of any person  (other
         than  any of  AGNU  and its  Subsidiaries)  under  Treasury  Regulation
         Section 1.1502-6 (or any similar provision of state,  local, or foreign
         law),  as a transferee  or  successor,  by contract or  otherwise.  For
         purposes of this Agreement,  the term tax (including,  with correlative
         meaning, the terms "taxes" and "taxable") includes all federal,  state,
         local, and foreign income, profits, franchise, gross receipts, payroll,
         sales, employment, use, property, withholding, excise, and other taxes,
         duties,  or  assessments  of any nature  whatsoever,  together with all
         interest,  penalties,  and  additions  imposed  with  respect  to  such
         amounts.

                  (b) No claim has been made since July 31, 1998 by an authority
         in a jurisdiction  where AGNU or any of its  Subsidiaries  does not pay
         sales and/or use taxes that it is or may be subject to a requirement to
         remit such taxes in that  jurisdiction.  Since July 31, 1998,  AGNU and
         its  Subsidiaries  have collected  and/or remitted all sales and/or use
         taxes required to be collected  and/or  remitted by all states in which
         AGNU or its  Subsidiaries  conduct business  activities,  except to the
         extent  that a failure to collect  and/or  remit such sales  and/or use
         taxes would not have a Material Adverse Effect on AGNU.

                  (c) None of the  compensation  paid by AGNU  since  January 1,
         1997,  and none of the  compensation,  if any, that may be payable as a
         result of the Merger  will be subject to the  limitations  set forth in
         Section 162(m) of the Code.

                  (d) No  amount  that  could be  received  (whether  in cash or
         property  or  the  vesting  of  property)  as a  result  of  any of the
         transactions contemplated by this Agreement by any employee, officer or
         director  of AGNU  or any of its  Subsidiaries  who is a  "disqualified
         individual"  (as such term is defined in Section 280G(c) of the Code or
         proposed   Treasury   Regulation   Section  1.280G-1)  under  any  AGNU
         Compensation  Agreement or AGNU Benefit Plan  currently in effect would
         be an "excess  parachute  payment"  (as such term is defined in Section
         280G(b)(l) of the Code).

                  (e) AGNU is not  aware of any  circumstance  or event  that is
         reasonably  likely to  prevent  the  Merger  from  being  treated  as a
         tax-free reorganization pursuant to Section 368(a) of the Code.

         Section 4.14. Customer Warranties.  Except as disclosed in Item 4.14 of
the  AGNU Disclosure Schedule, there are no pending, nor are there  to the  best
knowledge of AGNU any


                                                        22

<PAGE>




threatened, material claims under or pursuant to any warranty, whether expressed
or implied,  on products or services sold prior to the date of this Agreement by
AGNU or any of its  Subsidiaries.  Item  4.14 of the  AGNU  Disclosure  Schedule
identifies  all such claims  asserted from December 31, 1997 to the date of this
Agreement and describes the resolution or status of each such claim.

         Section 4.15. Brokers. No broker,  investment banker, financial advisor
or other Person, is entitled to any broker's,  finder's,  financial advisor's or
other similar fee or commission in connection with the transactions contemplated
by this Agreement based upon arrangements made by or on behalf of AGNU.

         Section 4.16. Material Contracts. None of AGNU or its Subsidiaries, nor
any of their  respective  assets,  business or operations,  is a party to, or is
bound or affected by, or receives  benefits under,  any contract or agreement or
amendment  thereto that in each case is required to be filed as an exhibit to an
Annual  Report on Form 10-K  filed by AGNU that has not been filed as an exhibit
to AGNU's Annual Report on Form 10-K filed for the fiscal year ended October 31,
1997 or as an exhibit  to another  filed  AGNU SEC  Document.  True and  correct
copies of such contracts,  and any agreements or amendments  thereto,  have been
made available for review by Virbac. None of the Material Contracts is currently
subject to  renegotiation or other adjustment of its terms either in whole or in
part.  None  of AGNU or its  Subsidiaries  is in  default  under  any  contract,
agreement, commitment,  arrangement, lease, insurance policy or other instrument
to which it is a party, by which its respective  assets,  business or operations
may be bound or  affected,  or under which it or any of its  respective  assets,
business or operations receives benefits,  which default,  in the aggregate,  is
reasonably likely to have a Material Adverse Effect,  and there has not occurred
any event that, with lapse of time or giving of notice or both, would constitute
such a  default.  Except  as  disclosed  in  Item  4.16 of the  AGNU  Disclosure
Schedule,  neither AGNU nor any of its  Subsidiaries is subject to, or bound by,
any contract containing  covenants which (i) limit the ability of AGNU or any of
its  Subsidiaries  to compete in any line of  business  or against any Person or
entity,  or  (ii)  involve  any  restriction  of the  method  by  which,  or the
geographical  area in which,  AGNU or any of its  Subsidiaries  may carry on its
business,  other than as may be required by law or any  applicable  Governmental
Entity.

         Section  4.17.  Labor  Matters.  Except  as  disclosed  in the AGNU SEC
Documents  filed and  publicly  available  prior to the date of this  Agreement,
neither  AGNU nor any of its  Subsidiaries  is a party to,  or is bound by,  any
collective  bargaining  agreement,  contract or other agreement or understanding
with a labor union or labor organization, nor is AGNU or any of its Subsidiaries
the  subject  of a  proceeding  asserting  that it or any  such  Subsidiary  has
committed an unfair  labor  practice  (within the meaning of the National  Labor
Relations  Act) or seeking to compel it or such  Subsidiary  to bargain with any
labor  organization  as to wages and conditions of employment,  nor is there any
strike or other labor dispute involving AGNU or any of its Subsidiaries, pending
or, to the best of its  knowledge,  threatened,  nor is it aware of any activity
involving  its or any  of the  Subsidiaries'  employees  seeking  to  certify  a
collective  bargaining  unit or  engaging  in any other  organization  activity.
Neither AGNU nor any of its Subsidiaries has been,  within the last three years,
nor, to the knowledge of AGNU and its Subsidiaries, are they


                                                        23

<PAGE>




likely to become the subject of, or involved in, any investigation, complaint or
proceeding  by the  United  States  Department  of Labor,  the Office of Federal
Contract Compliance,  the Equal Employment Opportunity Commission or any similar
federal,  state or local body dealing with any employment policies and practices
of AGNU or such  Subsidiaries or any Person currently  employed by them,  except
for any such  investigation,  complaint or proceeding  that,  in the  aggregate,
would not be reasonably likely to have a Material Adverse Effect.

         Section 4.18.  Environmental Matters.  Except as set forth in Item 4.18
of the AGNU Disclosure  Schedule and except for matters which are not reasonably
likely,  in the aggregate,  to have a Material  Adverse Effect:  (i) neither the
businesses of AGNU and its Subsidiaries  nor the operation  thereof violates any
applicable  environmental law and no condition or event has occurred which, with
notice or the  passage of time or both,  would  constitute  a  violation  of any
Environmental  Law; (ii) AGNU and each of its  Subsidiaries are in possession of
all Environmental Permits for the conduct or operation of the businesses of AGNU
and each of its  Subsidiaries,  (iii) AGNU and each of its  Subsidiaries  are in
compliance in all material respects with all of the requirements and limitations
included  in  the  Environmental  Permits,  (iv)  none  of  AGNU  or  any of its
Subsidiaries  has stored or used any Hazardous  Substance;  (v) neither AGNU nor
any of its Subsidiaries has received any written notice, demand letter, claim or
request for  information  alleging any  violation  of, or liability  under,  any
Environmental  Law; and (vi) none of AGNU or any of its Subsidiaries has buried,
dumped, disposed, spilled or released any pollutants,  contaminants or hazardous
wastes,  substances or materials on,  beneath or adjacent to any of its property
or any property adjacent thereto.

         Section 4.19. AGNU Intellectual  Property.  The term "AGNU Intellectual
Property"  means  all  of  AGNU's  and  its   Subsidiaries'  (i)  registered  or
unregistered  trademarks and other marks,  service  marks,  trade names or other
trade rights, and pending applications for any such registration, (ii) rights in
or to patents and copyrights and pending applications  therefor and (iii) rights
to other trademarks,  service marks and other marks, trade names and other trade
rights and all other trade secrets, designs, plans, specifications,  technology,
know-how,  methods, designs,  concepts, and other proprietary rights, whether or
not registered. Except as set forth in Item 4.19 of the AGNU Disclosure Schedule
and except with respect to the  representation  and warranty in Section 4.19(b),
which AGNU will not make as of the date  hereof but will make as of October  30,
1998  (and,  if  necessary,  will  update  by such  date  Item  4.19 of the AGNU
Disclosure Schedule with respect thereto), (a) AGNU and each of its Subsidiaries
is the sole owner of and has the  exclusive  right to use its AGNU  Intellectual
Property free from any Liens,  (b) no Person has a right to receive a royalty or
similar payment in respect of any AGNU Intellectual  Property,  whether pursuant
to any contractual  arrangements entered into by AGNU or any of its Subsidiaries
or otherwise,  (c) to AGNU's knowledge,  none of the AGNU Intellectual Property,
nor  AGNU's or any of its  Subsidiaries'  use  thereof,  infringe  or  otherwise
violate the rights of any third party, and (d) to AGNU's knowledge,  AGNU is not
aware of any  infringement  or violation  of AGNU's or any of its  Subsidiaries'
rights in or to the AGNU Intellectual  Property by any third party. AGNU and its
Subsidiaries  has the exclusive right to use, sell,  license and dispose of, and
has the  right to bring  actions  for  infringement  of,  the AGNU  Intellectual
Property.


                                                        24

<PAGE>





         Section 4.20.     Year 2000 Issues.

                  (a) AGNU has  conducted an  inventory  and  assessment  of all
         software,  computers,  network  equipment,   technical  infrastructure,
         production  equipment and other equipment and systems that are material
         to the  operation of the business of AGNU and that rely on,  utilize or
         perform date or time processing ("AGNU's Systems");

                  (b) Any  failure  of any of  AGNU's  Systems  to be Year  2000
         Complaint will not cause a Material Adverse Effect.

         Section 4.21.     Regulatory Compliance.

                  (a) To AGNU's  knowledge,  since the most recent  audit by the
         USDA,  FDA, EPA or any Drug Regulatory  Agency,  no act or omission has
         occurred at AGNU's facilities which would subject AGNU to noncompliance
         with the standards of the USDA,  FDA, EPA or any other  applicable Drug
         Regulatory Agency.

                  (b) Item 4.21 of the AGNU  Disclosure  Schedule  sets  forth a
         list, for the period between July 31, 1998 and the date hereof,  of (i)
         all  regulatory  or warning  letters,  notices of adverse  findings and
         similar  letters  or  notices  issued  by the  USDA,  FDA,  EPA or Drug
         Regulatory  Agency,  if any,  to AGNU or any of its  Subsidiaries  that
         would  have a  Material  Adverse  Effect,  (ii)  all  product  recalls,
         notifications  and  safety  alerts  conducted  by  AGNU  or  any of its
         Subsidiaries,  whether or not  required by the USDA,  FDA,  EPA or Drug
         Regulatory  Agency, and any request from the USDA, FDA, EPA or any Drug
         Regulatory  Agency  requesting AGNU or any of its Subsidiaries to cease
         to   investigate,   test  or  market  any   product,   which   recalls,
         notifications,  safety alerts or requests would have a Material Adverse
         Effect,  and (iii) any criminal  injunctive,  seizure or civil  penalty
         actions  begun  or  threatened  by the  USDA,  FDA,  EPA  or  any  Drug
         Regulatory  Agency against AGNU or any of its Subsidiaries and known by
         AGNU or any of its  Subsidiaries and all related consent decrees issued
         with  respect  to  AGNU  or  any  of its  Subsidiaries.  Copies  of all
         documents referred to in Item 4.21 have been made available to Virbac.

         Section 4.22. Voting Requirements.  The affirmative vote of the holders
of a majority of the voting power of all  outstanding  shares of the AGNU Common
Stock at the AGNU  Stockholders'  Meeting  to  approve  this  Agreement  and the
issuance  of the Merger  Shares is the only vote of the  holders of any class or
series of the AGNU's  capital  stock  necessary to approve this  Agreement,  the
issuance  of the  Merger  Shares  and  the  transactions  contemplated  by  this
Agreement.

         Section 4.23.  Issuance of Merger  Shares.  The Merger Shares have been
duly  authorized by the AGNU Board of Directors and, when issued as contemplated
by this Agreement, will be validly issued, fully paid and nonassessable, free of
any  preemptive  rights  created by, and not in violation  of, any statute,  the
certificate of incorporation of AGNU, the


                                                        25

<PAGE>




bylaws of AGNU or any  agreement  to which  AGNU is a party or by which  AGNU is
bound. The Merger Shares will be exempt from  registration  under the Securities
Act and under  applicable  Blue Sky  Laws.  The  offering  or sale of any of the
Merger  Shares  as  contemplated  by this  Agreement  does not give  rise to any
rights, other than those which have been waived or satisfied, for or relating to
the registration of any securities of AGNU.


                                   ARTICLE V
                                   COVENANTS

         Section 5.1. Affirmative  Covenants of Virbac.  Virbac hereby covenants
and agrees that,  prior to the  Effective  Time or earlier  termination  of this
Agreement,   unless  otherwise  expressly  contemplated  by  this  Agreement  or
consented  to in  writing  by  AGNU,  which  consent  will  not be  unreasonably
withheld, Virbac will, and will cause each of Virbac's Subsidiaries to:

                  (a)    operate its business in the Ordinary Course of Business
         and  in accordance, in all material respects, with applicable laws  and
         regulations;

                  (b) use its  commercially  reasonable best efforts to preserve
         substantially intact its business organization, maintain its rights and
         franchises,  use its commercially reasonable best efforts to retain the
         services of its  respective  principal  officers and key  employees and
         maintain its  relationships  with its respective  principal  suppliers,
         contractors,   distributors,   customers  and  others  having  material
         business  relationships  with it to the effect  that the  goodwill  and
         ongoing  businesses of Virbac and its  Subsidiaries  is not impaired in
         any material respect at the Effective Time;

                  (c)  maintain  and keep its  properties  and assets in as good
         repair and condition as at present,  ordinary  wear and tear  excepted;
         and

                  (d) keep in full  force and  effect  insurance  comparable  in
         amount and scope of coverage to that currently maintained;

provided,  however,  that  the  loss of any  officers,  employees,  consultants,
customers, payors or suppliers prior to the Effective Time will not constitute a
breach of this  Section  5.1 unless  such loss  would  have a  Material  Adverse
Effect.

         Section  5.2.  Negative  Covenants  of  Virbac.   Except  as  expressly
contemplated  by this Agreement or otherwise  consented to in writing by AGNU or
as set forth in Item 5.2 of the Virbac Disclosure Schedule, from the date hereof
until the Effective Time or earlier  termination of this Agreement,  Virbac will
not and will cause its Subsidiaries not to:

                  (a) (i)  increase  the  compensation  payable  to or to become
         payable to any of its directors,  officers or employees; (ii) grant any
         severance or termination pay to, or enter into or modify any employment
         or severance agreement with, any of its directors, officers


                                                        26

<PAGE>




         or employees;  or  (iii)  adopt or amend any employee benefit  plan  or
         arrangement, except as may be required by applicable law;

                  (b)  declare,  set aside or pay any  dividend  on, or make any
         other  distribution in respect of, any of its capital stock;  provided,
         however,  that this  Section  5.2(b) will not prohibit any wholly owned
         (directly or indirectly)  Subsidiary of Virbac from declaring,  setting
         aside or paying any dividend on, or making any  distribution in respect
         of, its capital stock;

                  (c) (i) redeem, repurchase or otherwise reacquire any share of
         its capital stock or any securities or obligations  convertible into or
         exercisable or exchangeable  for any share of its capital stock, or any
         options,  warrants or  conversion or other rights to acquire any shares
         of its capital stock or any such securities or obligations; (ii) effect
         any  reorganization  or  recapitalization;  or (iii) split,  combine or
         reclassify  any of its capital  stock or issue or  authorize or propose
         the issuance of any other  securities  in respect of, in lieu of, or in
         substitution for, shares of its capital stock;

                  (d) (i) issue, deliver,  award, grant or sell, or authorize or
         propose the issuance,  delivery, award, grant or sale of, any shares of
         any class of its capital stock  (including  shares held in treasury) or
         other equity  securities,  any  securities or  obligations  directly or
         indirectly convertible into or exercisable or exchangeable for any such
         shares,   or  any  rights   (including,   without   limitation,   stock
         appreciation  or stock  depreciation  rights),  warrants  or options to
         acquire,  any such  shares or  securities  or any  rights,  warrants or
         options   directly  or   indirectly  to  acquire  any  such  shares  or
         securities;  or (ii)  amend or  otherwise  modify the terms of any such
         securities, obligations, rights, warrants or options;

                  (e) acquire or agree to acquire,  by merging or  consolidating
         with, by  purchasing  an equity  interest in or a portion of the assets
         of,  or  by  any  other  manner,   any  business  or  any  corporation,
         partnership,  association  or other business  organization  or division
         thereof,  or otherwise acquire or agree to acquire all or substantially
         all assets of any other Person (other than the purchase of  receivables
         in the Ordinary Course of Business);

                  (f) sell,  lease,  exchange,  mortgage,  pledge,  transfer  or
         otherwise  dispose  of, or agree to sell,  lease,  exchange,  mortgage,
         pledge, transfer or otherwise dispose of, any of its assets, except for
         dispositions  of assets in the Ordinary Course of Business and sales of
         receivables in the Ordinary Course of Business;

                  (g)      propose or adopt any amendments to its certificate of
         incorporation or bylaws;

                  (h) (i) change any of its methods of  accounting  in effect as
         of the date of this  Agreement  or (ii) make or  rescind  any  material
         election relating to taxes, settle or


                                                        27

<PAGE>




         compromise any material claim,  action, suit,  litigation,  proceeding,
         arbitration,  investigation, audit or controversy relating to taxes, or
         change any of its methods of reporting income or deductions for Federal
         income tax  purposes  from those  employed  in the  preparation  of the
         Federal  income tax  returns for the taxable  year ended  December  31,
         1997,  except,  in the case of  clause  (i) or clause  (ii),  as may be
         required by law or GAAP, consistently applied;

                  (i) prepay,  before the scheduled maturity thereof, any of its
         long-term debt, or incur any obligation for borrowed money,  whether or
         not evidenced by a note, bond,  debenture or similar instrument,  other
         than (i) intercompany  indebtedness  and  indebtedness  incurred in the
         Ordinary   Course  of  Business  under  the  existing  loan  agreements
         described  in Item 5.2 of the Virbac  Disclosure  Schedule or under any
         refinancing,  renewal or  refunding  thereof,  and (ii) trade  payables
         incurred in the Ordinary Course of Business;

                  (j) take any action  that would  prevent the Merger from being
         treated as a tax-free  reorganization pursuant to Section 368(a) of the
         Code;

                  (k) take any action that would or could reasonably be expected
         to result in any of its  representations  and  warranties  set forth in
         this  Agreement  being  untrue in any  material  respect  (but  without
         duplication  of  any  standard  of   materiality   set  forth  in  such
         representation  or warranty) or in any of the  conditions to the Merger
         set forth in Article VII not being  satisfied in any material  respect;
         or

                  (l)  agree in writing or otherwise to do any of the foregoing.

         Section 5.3.  Affirmative  Covenants of AGNU. AGNU hereby covenants and
agrees  that,  unless  otherwise  expressly  contemplated  by this  Agreement or
consented  to in  writing  by  Parent  and  Virbac,  which  consent  will not be
unreasonably withheld, AGNU will, and will cause each of AGNU's Subsidiaries to:

                  (a) prior to the Effective Time or earlier termination of this
          Agreement:

                           (i)    operate its business in the Ordinary Course of
                  Business  and  in accordance, in all material  respects,  with
                  applicable laws and regulations;

                           (ii) use its commercially  reasonable best efforts to
                  preserve   substantially  intact  its  business  organization,
                  maintain  its  rights  and  franchises,  use its  commercially
                  reasonable   best  efforts  to  retain  the  services  of  its
                  respective  principal  officers and key employees and maintain
                  its  relationships  with its respective  principal  suppliers,
                  contractors,   distributors,   customers   and  others  having
                  material business relationships with it to the effect that the
                  goodwill and ongoing  businesses of AGNU and its  Subsidiaries
                  is not impaired in any material respect at the Effective Time;


                                                        28

<PAGE>





                           (iii)  maintain and keep its properties and assets in
                  as good repair and condition as at present,  ordinary wear and
                  tear excepted; and

                           (iv)  keep  in  full  force  and   effect   insurance
                  comparable  in amount and scope of coverage to that  currently
                  maintained;

                  provided,  however, that the loss of any officers,  employees,
                  consultants,  customers,  payors  or  suppliers  prior  to the
                  Effective  Time will not  constitute  a breach of this Section
                  5.3 unless such loss would have a Material Adverse Effect; and

                  (b) within 60 days after the Effective Time, complete a tender
         offer to  repurchase  up to $3,000,000 of AGNU Common Stock (other than
         the Merger Shares) at a price per share of $3.00,  which price has been
         determined by AGNU's Board of Directors.

                  (c) AGNU will  obtain an opinion of Duff & Phelps  LLC,  dated
         the date the Proxy  Statement  is first mailed to the  Stockholders  of
         AGNU, to the effect that, as of such date,  the financial  terms of the
         Merger are fair to AGNU's  stockholders  from a financial point of view
         (the "AGNU Fairness  Opinion") and will promptly deliver a complete and
         correct signed copy of such opinion to Virbac.

                  (d) AGNU will take any appropriate actions required so that no
         shares  of  AGNU  Common  Stock  are  held  in its  treasury  as of the
         Effective Time.

         Section  5.4.   Negative   Covenants  of  AGNU.   Except  as  expressly
contemplated by this Agreement or otherwise consented to in writing by Virbac or
as set forth in Item 5.4 of the AGNU Disclosure  Schedule,  from the date hereof
until the Effective Time, AGNU will not:

                  (a) (i)  increase  the  compensation  payable  to or to become
         payable to any of its  directors,  officers  or  employees  (other than
         through  executive  bonuses  consistent  with past  practice  and, with
         respect  to Bruce G. Baker and  Robert J.  Elfanbaum,  to be payable in
         cash or  stock  options  not in  excess  of 50% of the  maximum  amount
         allowable in their respective employment agreements currently in effect
         with AGNU);  (ii) grant any severance or  termination  pay to, or enter
         into or modify any employment or severance  agreement  with, any of its
         directors,  officers or employees; or (iii) adopt or amend any employee
         benefit plan or  arrangement,  except as may be required by  applicable
         law;

                  (b)  declare,  set aside or pay any  dividend  on, or make any
         other  distribution in respect of, any of its capital stock;  provided,
         however,  that this  Section  5.4(b) will not prohibit any wholly owned
         (directly or  indirectly)  Subsidiary of AGNU from  declaring,  setting
         aside or paying any dividend on, or making any  distribution in respect
         of, its capital stock;


                                                        29

<PAGE>





                  (c) (i) redeem, repurchase or otherwise reacquire any share of
         its capital stock or any securities or obligations  convertible into or
         exercisable or exchangeable  for any share of its capital stock, or any
         options,  warrants or  conversion or other rights to acquire any shares
         of its capital stock or any such securities or obligations; (ii) effect
         any  reorganization  or  recapitalization;  or (iii) split,  combine or
         reclassify  any of its capital  stock or issue or  authorize or propose
         the issuance of any other  securities  in respect of, in lieu of, or in
         substitution for, shares of its capital stock;

                  (d) (i) except as set forth in  Section  5.4(a) and except for
         issuance of shares pursuant to options  outstanding on the date hereof,
         issue,  deliver,  award,  grant or sell,  or  authorize  or propose the
         issuance, delivery, award, grant or sale of, any shares of any class of
         its capital stock  (including  shares held in treasury) or other equity
         securities,  any  securities  or  obligations  directly  or  indirectly
         convertible into or exercisable or exchangeable for any such shares, or
         any rights (including,  without limitation, stock appreciation or stock
         depreciation  rights),  warrants or options to acquire, any such shares
         or securities or any rights, warrants or options directly or indirectly
         to acquire any such shares or  securities;  or (ii) amend or  otherwise
         modify the terms of any such securities,  obligations, rights, warrants
         or options;

                  (e) acquire or agree to acquire,  by merging or  consolidating
         with, by  purchasing  an equity  interest in or a portion of the assets
         of,  or  by  any  other  manner,   any  business  or  any  corporation,
         partnership,  association  or other business  organization  or division
         thereof,  or otherwise acquire or agree to acquire all or substantially
         all assets of any other Person (other than the purchase of  receivables
         in the Ordinary Course of Business);

                  (f) sell,  lease,  exchange,  mortgage,  pledge,  transfer  or
         otherwise  dispose  of, or agree to sell,  lease,  exchange,  mortgage,
         pledge, transfer or otherwise dispose of, any of its assets, except for
         dispositions  of assets in the Ordinary Course of Business and sales of
         receivables in the Ordinary Course of Business;

                  (g)      propose or adopt any amendments to its Restated 
         Certificate of Incorporation or By-Laws;

                  (h) (i) change any of its methods of  accounting  in effect as
         of the date of this  Agreement  or (ii) make or  rescind  any  material
         election  relating to taxes,  settle or compromise any material  claim,
         action, suit, litigation, proceeding, arbitration, investigation, audit
         or  controversy  relating  to taxes,  or change  any of its  methods of
         reporting  income or  deductions  for Federal  income tax purposes from
         those employed in the preparation of the Federal income tax returns for
         the taxable year ended October 31, 1997,  except, in the case of clause
         (i) or clause  (ii),  as may be required  by law or GAAP,  consistently
         applied;



                                                        30

<PAGE>




                  (i) prepay,  before the scheduled maturity thereof, any of its
         long-term debt, or incur any obligation for borrowed money,  whether or
         not evidenced by a note, bond,  debenture or similar instrument,  other
         than (i) indebtedness incurred in the Ordinary Course of Business under
         the  existing  loan  agreements  described  in  Item  5.4 of  the  AGNU
         Disclosure  Schedule  or under any  refinancing,  renewal or  refunding
         thereof,  and (ii) trade  payables  incurred in the Ordinary  Course of
         Business;

                  (j) take any action  that would  prevent the Merger from being
         treated as a tax-free  reorganization pursuant to Section 368(a) of the
         Code;

                  (k) take any action that would or could reasonably be expected
         to result in any of its  representations  and  warranties  set forth in
         this  Agreement  being  untrue in any  material  respect  (but  without
         duplication  of  any  standard  of   materiality   set  forth  in  such
         representation  or warranty) or in any of the  conditions to the Merger
         set forth in Article VII not being  satisfied in any material  respect;
         or

                  (l)  agree in writing or otherwise to do any of the foregoing.


                                   ARTICLE VI
                              ADDITIONAL AGREEMENTS

         Section  6.1.  Access  and  Information.  From the date  hereof  to the
Effective Time or earlier  termination of this  Agreement,  each party will, and
will cause its  Subsidiaries  to,  afford to the other  party and its  officers,
employees, accountants,  consultants, legal counsel and other representatives of
the other party (collectively,  the "Representatives")  reasonable access during
normal business hours to the properties, executive personnel and all information
concerning the business,  properties,  contracts,  records and personnel of such
party and its Subsidiaries as the other party may reasonably request;  provided,
however,  that no  investigation  pursuant to this Section 6.1 or otherwise will
alter any  representation  or warranty of any party hereto or the  conditions to
the obligations of the parties hereto.

         Section 6.2.  Confidentiality.  Each party agrees that it will not, and
will  cause  its  Affiliates  and  Representatives  not  to,  use,  directly  or
indirectly,  any  information  obtained  pursuant to Section 6.1 (as well as any
other information  obtained prior to the date hereof in anticipation of entering
into this Agreement,  which is subject to a Confidentiality and Non-Solicitation
Agreement dated as of April 3, 1998 among AGNU and Virbac (the  "Confidentiality
Agreement"))  for any purpose  unrelated to the consummation of the transactions
contemplated by this Agreement.  Subject to the  requirements of law, each party
will keep  confidential,  and will cause its Affiliates and  Representatives  to
keep  confidential,  all information and documents  obtained pursuant to Section
6.1 (as well as any  other  information  obtained  prior to the date  hereof  in
anticipation  of entering into this Agreement)  unless such  information (i) was
already  known to such party,  (ii)  becomes  available to such party from other
sources  not known by such  party to be bound by a  confidentiality  obligation,
(iii) is disclosed with the prior written approval


                                                        31

<PAGE>




of the party to which such  information  pertains or (iv) is or becomes  readily
ascertainable  from published  information  or trade sources.  In the event that
this Agreement is terminated or the transactions  contemplated by this Agreement
otherwise fail to be  consummated,  each party will promptly cause all copies of
documents  or extracts  thereof  containing  information  and data as to another
party hereto to be returned to the party which furnished the same.

         Section 6.3.      Proxy Statement.

                  (a) As promptly as  practicable  after the  execution  of this
         Agreement,  AGNU will prepare and file with the SEC  preliminary  proxy
         materials  which will  consist of the  preliminary  Proxy  Statement in
         connection  with the vote of AGNU's  stockholders  with  respect to the
         Merger  and  the  issuance  of  the  Merger  Shares.  No  amendment  or
         supplement  to  the  Proxy   Statement   that  amends  or   supplements
         information  relating to Virbac or AGNU will be made by the  applicable
         party without the approval of the other party,  such approval not to be
         unreasonably  withheld.  As promptly as practicable  after all comments
         are  received  from  the SEC  with  respect  to the  preliminary  Proxy
         Statement and after the furnishing by AGNU of all information  required
         to be  contained  therein,  AGNU will file with the SEC the  definitive
         Proxy  Statement to be sent or given in connection with the vote of the
         AGNU stockholders at the AGNU Stockholders' Meeting. AGNU will take any
         action  required  to be taken  under any  applicable  Federal  or state
         securities  or Blue Sky Laws in  connection  with the  issuance  of the
         Merger Shares.  Virbac will furnish all  information  concerning it and
         the  holders of its  capital  stock as AGNU may  reasonably  request in
         connection with such actions.

                  (b) The  information  supplied by Virbac for  inclusion in the
         Proxy  Statement to be sent to the  stockholders  of AGNU in connection
         with the AGNU  Stockholders'  Meeting  will not,  at the date the Proxy
         Statement  (or any amendment  thereof or  supplement  thereto) is first
         mailed to  stockholders  of Virbac or, except to the extent  amended or
         supplemented,  at the time of the AGNU Stockholders'  Meeting,  contain
         any untrue  statement of a material  fact or omit to state any material
         fact  required to be stated  therein or  necessary in order to make the
         statements  therein, in the light of the circumstances under which they
         are  made,  not  misleading.   If,  at  any  time  prior  to  the  AGNU
         Stockholders'  Meeting, any event or circumstance relating to Virbac or
         any  of  its  Affiliates,  or  its  or  their  respective  officers  or
         directors,  is  discovered  by  Virbac  which  should be set forth in a
         supplement to the Proxy Statement, Virbac will promptly inform AGNU.

                  (c) The  information  supplied  by AGNU for  inclusion  in the
         Proxy  Statement  to be sent to the  stockholders  of AGNU for the AGNU
         Stockholders' Meeting will not, at the date the Proxy Statement (or any
         amendment   thereof  or   supplement   thereto)  is  first   mailed  to
         stockholders of AGNU or, except to the extent amended or  supplemented,
         at the time of the  AGNU  Stockholders'  Meeting,  contain  any  untrue
         statement  of a  material  fact or  omit to  state  any  material  fact
         required  to be  stated  therein  or  necessary  in  order  to make the
         statements  therein, in the light of the circumstances under which they
         are made,


                                                        32

<PAGE>




         not misleading.  All documents that AGNU is responsible for filing with
         the SEC in connection with the  transactions  contemplated  herein will
         comply  as to form and  substance  in all  material  respects  with the
         applicable requirements of the Securities Act and the Exchange Act.

                  (d)  Notwithstanding   the  foregoing,   no  party  makes  any
         representations  or warranties with respect to any information that has
         been  supplied  by  the  other  party  or by its  auditors,  attorneys,
         financial advisors,  other consultants or advisors specifically for use
         in any "blue sky" filing,  the Proxy Statement,  or any other documents
         to be filed with the SEC or any  regulatory  agency in connection  with
         the transactions contemplated hereby.

         Section 6.4. AGNU Stockholder Approval.  AGNU, acting through its Board
of  Directors,  will,  in  accordance  with  applicable  law  and  its  Restated
Certificate of Incorporation and By-Laws, duly call, give notice of, convene and
hold  one or more  meetings  of  AGNU's  stockholders  as  soon  as  practicable
following the date on which the definitive  Proxy  Statement is filed to approve
and adopt this  Agreement  and the Merger and to  approve  the  issuance  of the
Merger Shares.  AGNU will,  through its Board of Directors,  recommend to AGNU's
stockholders that AGNU's  stockholders  approve and adopt this Agreement and the
Merger and approve the  issuance of the Merger  Shares,  except  where  required
otherwise  by the  fiduciary  duties of the  Board of  Directors  of AGNU  under
applicable  law.  In the event  that  AGNU's  Board of  Directors  withdraws  or
modifies its recommendation,  AGNU nonetheless will cause the AGNU Stockholders'
Meeting  to be  convened  and a vote  taken  with  respect to the Merger and the
issuance of the Merger  Shares and the Board of  Directors  may  communicate  to
AGNU's  stockholders its basis for such withdrawal or  modification.  Subject to
the preceding sentence,  AGNU will use its commercially  reasonable best efforts
to  solicit  from  stockholders  of AGNU  proxies in favor of the  approval  and
adoption of this  Agreement  and the Merger and  approval of the issuance of the
Merger  Shares and to take all other actions  reasonably  necessary or in AGNU's
reasonable  judgment  advisable  to  secure  the AGNU  Stockholder  Approval  as
promptly as practicable.

         Section 6.5.      Further Action; Commercially Reasonable Best Efforts.

                  (a) Each of the parties will use its  commercially  reasonable
         best efforts to take, or cause to be taken, all appropriate action, and
         do, or cause to be done,  all  things  necessary,  proper or  advisable
         under applicable laws or otherwise to consummate and make effective the
         transactions contemplated by this Agreement as promptly as practicable,
         including,  without limitation,  using its commercially reasonable best
         efforts  to  obtain  all  licenses,   permits,   consents,   approvals,
         authorizations,  qualifications and orders of Governmental Entities and
         parties to  contracts  with  Virbac and AGNU as are  necessary  for the
         transactions contemplated herein.

                  (b) From the date of this  Agreement  until the Effective Time
         or earlier  termination  of this  Agreement,  each of the parties  will
         promptly  notify  the  other  in  writing  of any  pending  or,  to the
         knowledge of such party, threatened action, proceeding


                                                        33

<PAGE>




         or  investigation  by any  Governmental  Entity or any other Person (i)
         challenging or seeking damages in connection  with the Merger,  or (ii)
         seeking to  restrain  or  prohibit  the  consummation  of the Merger or
         otherwise  limit the right of AGNU to own or operate all or any portion
         of the business or assets of Virbac.

                  (c) Parent and Virbac will give prompt written notice to AGNU,
         and AGNU will give prompt written notice to Virbac,  of the occurrence,
         or failure to occur, of any event, which occurrence or failure to occur
         would be likely to cause any  representation  or warranty  contained in
         this  Agreement to be untrue or inaccurate  in any material  respect at
         any time  from  the date of this  Agreement  to the  Effective  Time or
         earlier  termination  of  this  Agreement.  Each  party  will  use  its
         commercially  reasonable best efforts to not take any action,  or enter
         into any transaction,  which would cause any of its  representations or
         warranties  contained  in this  Agreement  to be  untrue or result in a
         breach of any covenant made by it in this Agreement.

                  (d) Parent, Virbac and AGNU will cooperate with one another to
         lift  any   injunctions   or  remove  any  other   impediments  to  the
         consummation of the transactions contemplated herein.

         Section 6.6. Public Announcements.  AGNU, on the one hand, and VBSA, on
the other hand, (a) will consult with each other before  issuing,  and give each
other the  opportunity  to review and comment  upon,  any press release or other
written public statements with respect to the transactions  contemplated by this
Agreement,  including the Merger, (b) will agree to coordinate the timing of the
announcement  and not  issue any such  press  release  or make any such  written
public statement prior to such consultation, except as may be required by Law or
any listing  agreement with any exchange on which the  respective  securities of
AGNU and VBSA are traded.

         Section 6.7.    Directors' and Officers' Insurance and Indemnification.

                  (a) From and  after the  Effective  Time and for not less than
         five years,  AGNU will indemnify,  defend and hold harmless each person
         who on or  prior to the  Effective  Time was an  officer,  director  or
         employee  of  Virbac  and its  Subsidiaries  and who on or prior to the
         Effective  Time  was  entitled  to  indemnification   pursuant  to  the
         certificate  of  incorporation  or bylaws  of  Virbac  or an  indemnity
         agreement  with  Virbac  (individually,   an  "Indemnified  Party"  and
         collectively,  the "Indemnified Parties"),  against all losses, claims,
         damages,  liabilities,  costs or expenses (including  attorneys' fees),
         judgments,  fines,  penalties  and  amounts  paid in  settlement  of or
         otherwise in connection  with any claim,  action,  suit,  proceeding or
         investigation  (a  "Claim")  arising  out of or  pertaining  to acts or
         omissions, or alleged acts or omissions, by them in their capacities as
         such  occurring at or prior to the Effective Time  (including,  without
         limitation,  the  transactions  contemplated  by this Agreement) to the
         same  extent  that  such   Indemnified   Parties  are  so  entitled  to
         indemnification   as  of  the  Effective   Time  under  the  DGCL,  the
         certificate of incorporation  and the bylaws of Virbac. In the event of
         any such Claim, AGNU will pay


                                                        34

<PAGE>




         expenses  in advance  of the final  disposition  of any such  action or
         proceeding to each  Indemnified  Party to the fullest extent  permitted
         under  the  DGCL,  upon  receipt  from  the  Indemnified  Party to whom
         expenses  are  advanced  of  an  undertaking  to  repay  such  advances
         contemplated   by  the  DGCL.   AGNU  also  will  cause  the  Surviving
         Corporation  to honor any agreement in effect as of the date hereof and
         previously  disclosed to AGNU providing for the  indemnification of any
         director,  officer or employee or agent,  in accordance  with the terms
         and conditions of such agreement.

                  (b) AGNU will  cause to be  maintained  in effect for not less
         than five  years  after the  Effective  Time the  current  policies  of
         directors' and officers'  liability  insurance and fiduciary  liability
         insurance  maintained  by Virbac with  respect to Claims  arising  from
         facts or events which occurred prior to the Effective  Time;  provided,
         however,  that AGNU may  substitute  therefor  policies of at least the
         same coverage and amounts  containing  terms and conditions that are no
         less advantageous for the officers, directors and other persons covered
         thereby.

                  (c) This  Section  6.7 will  survive the  consummation  of the
         Merger,  is  intended  to benefit  the  Indemnified  Parties  and their
         respective  heirs  and  personal  representatives,  is  binding  on all
         successors  and assigns of AGNU and the  Surviving  Corporation  and is
         enforceable by the foregoing parties as third party beneficiaries.

         Section 6.8. HSR Act Matters.  AGNU, VBSA, Parent and Virbac, as may be
required pursuant to the HSR Act, promptly will complete all documents  required
to be filed with the Federal Trade  Commission and the United States  Department
of Justice in order to comply  with the HSR Act and,  not later than thirty days
after the date  hereof,  together  with the Persons who are  required to join in
such filings,  will file the same with the  appropriate  Governmental  Entities.
AGNU, Parent and Virbac will promptly furnish all materials  thereafter required
by any of the Governmental  Entities having jurisdiction over such filings,  and
will  take all  reasonable  actions  and will  file and use  their  commercially
reasonable best efforts to have declared effective or approved all documents and
notifications  with any such  Governmental  Entity, as may be required under the
HSR Act or other Federal  antitrust laws for the  consummation of the Merger and
the other transactions contemplated hereby. Virbac will pay all costs associated
with the HSR Act filings.

         Section 6.9.      No Solicitation.

                  (a) AGNU,  Virbac,  their  respective  Subsidiaries  and their
         respective officers, directors, employees,  representatives,  agents or
         Affiliates will cease any discussion or  negotiations  with any parties
         that may be ongoing with respect to an Acquisition Proposal (as defined
         below).  AGNU and Virbac  will not,  nor will they  permit any of their
         Subsidiaries to, and they will use their  commercially  reasonable best
         efforts  to cause  their  officers,  directors,  employees,  agents  or
         Affiliates  not to,  directly or indirectly,  (i) solicit,  initiate or
         knowingly encourage  (including by way of furnishing  information),  or
         knowingly  take any other action to  facilitate,  any  inquiries or the
         making of any proposal


                                                        35

<PAGE>




         which  constitutes,  or may  reasonably  be  expected  to lead to,  any
         Acquisition  Proposal,  or  (ii)  participate  in  any  discussions  or
         negotiations  regarding any Acquisition  Proposal;  provided,  however,
         that if the Board of  Directors  of AGNU or Virbac  determines  in good
         faith,  after  consultation  with,  and  based on the  advice  of legal
         counsel,  that it is  required  to do so in  order to  comply  with its
         fiduciary duties to its  stockholders  under applicable law, it may, in
         response  to  an  unsolicited  Acquisition  Proposal,  and  subject  to
         compliance with Section 6.9(c), (1) furnish information with respect to
         AGNU  or  Virbac,  as the  case  may  be,  to any  Person  making  such
         unsolicited    Acquisition    Proposal    pursuant   to   an   executed
         confidentiality  agreement  with such Person,  and (2)  participate  in
         discussions or negotiations regarding such Acquisition Proposal.

                  (b) Except as set forth in this Section 6.9, neither the Board
         of  Directors  of AGNU nor any  committee  thereof will (i) withdraw or
         modify,  or  propose to  withdraw  or  modify,  in a manner  adverse to
         Virbac,  the approval or  recommendation  by such Board of Directors or
         such  committee  of the  Merger  or this  Agreement,  (ii)  approve  or
         recommend,  or  propose  to  approve  or  recommend,   any  Acquisition
         Proposal,  or (iii)  cause  AGNU to enter  into any  letter of  intent,
         agreement  in  principle,   acquisition   agreement  or  other  similar
         agreement  (each,  an  "Acquisition  Agreement")  with  respect  to any
         Acquisition Proposal.  Notwithstanding the foregoing, in the event that
         the  Board  of  Directors  of  AGNU  determines  in good  faith,  after
         consultation with and based on the advice of legal counsel,  that it is
         required  to do so in order to  comply  with its  fiduciary  duties  to
         AGNU's  stockholders  under  applicable  law, the Board of Directors of
         AGNU may (subject to the  following  sentences)  (1) withdraw or modify
         its approval or  recommendation  of the Merger and this  Agreement  (or
         decide not to  recommend  it before the Proxy  Statement is sent to the
         stockholders  of AGNU) only at a time that is after the fifth  Business
         Day following  Virbac's  receipt of written notice advising Virbac that
         the  Board of  Directors  of AGNU has  received  a  Superior  Proposal,
         specifying the material terms and conditions of such Superior  Proposal
         and  identifying  the  Person  making  such  Superior  Proposal  or (2)
         terminate  this  Agreement by exercising  its  termination  right under
         Section  10.1(h),  as  applicable.  In  addition,  if AGNU  proposes to
         terminate this Agreement  pursuant to Section  10.1(h),  it will pay to
         Virbac the  Termination  Fee (as  defined in Section  6.13) at the time
         prescribed in Section 6.13.

                  (c) In  addition  to the  obligations  of AGNU  set  forth  in
         paragraphs  (a) and (b) of this Section 6.9, AGNU will promptly  advise
         Virbac orally and in writing of any request for information of a nature
         which  would  assist a potential  bidder in  preparing  an  Acquisition
         Proposal  or of  any  Acquisition  Proposal,  the  material  terms  and
         conditions of such request or Acquisition  Proposal and the identity of
         the Person making such request or Acquisition Proposal.  AGNU will keep
         Virbac fully  informed on a prompt and current  basis of the status and
         details  (including  amendments  or  proposed  amendments)  of any such
         request or Acquisition Proposal.

                  (d) Nothing  contained in this Section 6.9 prohibits AGNU from
         taking and disclosing to its  stockholders a position  contemplated  by
         Rule 14e-2(a) promulgated


                                                        36

<PAGE>




         under  the  Exchange  Act or  from  making  any  disclosure  to  AGNU's
         stockholders  if, in the good faith  judgment of the Board of Directors
         of AGNU,  after  consultation  with and  based on the  advice  of legal
         counsel,  failure  so  to  disclose  would  be  inconsistent  with  its
         fiduciary duties to AGNU's stockholders under applicable law; provided,
         however, neither AGNU, its Board of Directors nor any committee thereof
         will,  except as permitted by Section  6.9(b),  withdraw or modify,  or
         propose  to  withdraw  or modify,  its  position  with  respect to this
         Agreement or the Merger or approve or recommend,  or propose to approve
         or recommend, an Acquisition Proposal.

                  (e) For  purposes of this  Agreement,  "Acquisition  Proposal"
         means any bona fide  proposal or offer from any Person  relating to any
         merger,  consolidation,  business  combination,  sale of a  significant
         amount of assets  outside of the Ordinary  Course of Business,  sale of
         shares of capital  stock  outside of the  Ordinary  Course of Business,
         tender or exchange offer or similar  transaction  involving AGNU or any
         of its  Subsidiaries.  For  purposes  of this  Agreement,  a  "Superior
         Proposal"  means an  Acquisition  Proposal  made by a third party after
         October  16,  1998  which,  in the good faith  judgment of the Board of
         Directors of AGNU taking into account, to the extent deemed appropriate
         by the Board of Directors,  the various legal, financial and regulatory
         aspects of the proposal  and the Person  making such  proposal,  (i) if
         accepted,  is  reasonably  likely  to  be  consummated,   and  (ii)  if
         consummated,  is  reasonably  likely  to  result  in a  more  favorable
         transaction to AGNU's  stockholders from a financial point of view than
         the transaction contemplated hereunder considering, among other things,
         and to the  extent  deemed  appropriate  in good  faith by the Board of
         Directors,  the  long-term  prospects  and  interests  of AGNU  and its
         stockholders and other relevant constituencies.

         Section 6.10. Affiliate Agreements.  Parent will execute and deliver to
AGNU on or before the date of mailing of the Proxy Statement an agreement in the
form  attached  hereto as Exhibit C with  regard to the fact  that,  at the time
Parent  consented  to the  Merger  and  approved  this  Agreement,  Parent is an
"affiliate"  of AGNU for  purposes  of Rule 145  under  the  Securities  Act and
applicable  SEC rules and  regulations.  At the  Closing,  VBSA will execute and
deliver to AGNU an agreement in the form attached hereto as Exhibit D.

         Section 6.11. Conduct of Business of Parent and Surviving  Corporation.
VBSA will, as promptly as practicable,  cause Parent to be duly incorporated and
to execute and deliver an addendum to this Agreement in the form attached hereto
as Exhibit E making it a party  hereto and take all other  action  necessary  to
cause Parent to perform its obligations  hereunder  (including,  but not limited
to,  consummation  of the Merger and all applicable  covenants) and to otherwise
comply with the terms hereof.  VBSA will also take all  commercially  reasonable
actions necessary to cause Parent to cause Surviving  Corporation to perform its
obligations  arising  hereunder  (including,  but not  limited  to,  obligations
arising under Section 8.2 of this Agreement).

         Section 6.12.  Expenses.  All costs and expenses incurred in connection
with this Agreement and the transactions contemplated hereby will be paid by the
party incurring such


                                                        37

<PAGE>




expenses;  provided,  however, that all costs and expenses relating to printing,
filing and mailing the Proxy  Statement  and any other filings with the SEC, and
all SEC and other  regulatory  filing  fees  incurred  in  connection  with such
filings  will be borne by AGNU;  provided  further,  that if this  Agreement  is
terminated  pursuant to Section 10.1(a),  (d), or (e) hereof,  the parties shall
share equally the cost of filing fees for any filings required under Section 6.8
of the Agreement  and any fees incurred by AGNU in connection  with the fairness
opinion referred to in Section 7.2(e) of the Agreement.

         Section 6.13.  Termination Fee. If (i) Virbac terminates this Agreement
pursuant  to Section  10.1(f) or AGNU  terminates  this  Agreement  pursuant  to
Section 10.1(g), then, within five Business Days of such termination,  AGNU will
pay Virbac by wire  transfer in  immediately  available  funds a fee of $800,000
(the "Termination Fee"); provided that, if an AGNU Stockholders' Meeting is held
pursuant to the second  sentence of Section 6.4 and the  stockholders of AGNU do
not approve and adopt this Agreement and the Merger, the Termination Fee will be
payable upon the first Business Day following the AGNU Stockholders' Meeting.

         Section 6.14. Tax Treatment. This Agreement is intended to constitute a
"plan of reorganization"  within the meaning of Section 1.368-2(g) of the income
tax  regulations  promulgated  under the  Code.  From and after the date of this
Agreement until the Effective Time or termination of this Agreement,  each party
hereto will use its commercially  reasonable best efforts to cause the Merger to
qualify as a  reorganization  within the meaning of Section  368(a) of the Code,
and will not,  without the prior written  consent of the other  parties  hereto,
knowingly  take any  actions  or cause  any  actions  to be  taken  which  could
reasonably  be  expected to prevent  the Merger  from so  qualifying.  AGNU will
provide Virbac with such representations as are reasonably requested in order to
enable Virbac's counsel to render the opinions set forth in Sections 7.3(d).  In
the event  counsel  for  Virbac is unable to render  the  opinions  set forth in
Section  7.3(d),  the  parties  hereto  agree  to  negotiate  in good  faith  to
restructure  the Merger in order to permit such counsel to render such  opinion.
Following the Effective Time, and consistent with any such consent,  neither the
Surviving  Corporation nor AGNU nor any of their respective Affiliates knowingly
and voluntarily will take any action or cause any action to be taken which could
reasonably   be   expected  to  cause  the  Merger  to  fail  to  qualify  as  a
reorganization under Section 368(a) of the Code.

         Section  6.15.  Assumption  of  Certain  Obligations.   To  the  extent
necessary,  AGNU will,  or will cause the Surviving  Corporation  to, enter into
supplemental  indentures  or  otherwise  affirmatively  assume  in  writing  the
obligations of Virbac under those  indentures or other  financing  agreements as
set forth on Item 6.15 of the Virbac Disclosure Schedule.

         Section 6.16. No Action.  Except as contemplated by this Agreement,  no
party hereto will,  nor will any such party permit any of its  Subsidiaries  to,
take or agree or commit to take any action that is reasonably likely to make any
of its  representations  or  warranties  hereunder  inaccurate  in any  material
respect at the date made (to the extent so limited) or as of the Effective Time.


                                                        38

<PAGE>





         Section 6.17.  Employment Agreements  Undertaking.  On the date hereof,
Virbac will enter into a letter agreement in the form attached hereto as Exhibit
F  undertaking  to enter  into  negotiations  with  Bruce G. Baker and Robert J.
Elfanbaum with the intent to mutually agree upon new employment agreements to be
entered into with the Surviving Corporation.

         Section 6.18.  Cash  Infusion.  Virbac will prepare and provide to AGNU
not less than five days  prior to the  Effective  Time a schedule  certified  by
Arthur  Andersen  LLP  setting  forth  the sum of (a)  $6,700,000  plus  (b) the
difference  between  (i) Notes  Payable  to Bank  plus  Notes  Payable  to VBSA,
together with accrued interest on each of the foregoing Notes Payable,  plus 60%
of the Broker Fee ("Virbac  Debt"),  and (ii) Cash, each as accrued on the books
of Virbac as of December 31, 1998 (the "Cash  Infusion").  Immediately  prior to
the Effective  Time,  Parent will contribute cash in an amount equal to the Cash
Infusion to Virbac.


                                 ARTICLE VII
                             CLOSING CONDITIONS

         Section 7.1.  Conditions to Obligations  of AGNU,  Parent and Virbac to
Effect the Merger.  The  respective  obligations  of AGNU,  Parent and Virbac to
effect the Merger and the other transactions contemplated herein will be subject
to  the  satisfaction  at or  prior  to the  Effective  Time  of  the  following
conditions,  any or all of which  may be  waived,  in  whole or in part,  to the
extent permitted by applicable law:

                  (a)  Stockholder  Approval.  The Board of  Directors of Parent
         will have approved in  accordance  with  applicable  law the Merger and
         this Agreement.  AGNU will have obtained the AGNU Stockholder  Approval
         by the requisite vote in accordance with applicable law.

                  (b) No Order. No Governmental Entity or Federal or state court
         of competent  jurisdiction  enacts,  issues,  promulgates,  enforces or
         enters  any  statute,  rule,   regulation,   executive  order,  decree,
         judgment, injunction or other order (whether temporary,  preliminary or
         permanent),  in any case  which is in  effect  and  which  prevents  or
         prohibits   consummation  of  the  Merger  or  any  other  transactions
         contemplated in this  Agreement;  provided,  however,  that the parties
         will use their  commercially  reasonable best efforts to cause any such
         decree, judgment, injunction or other order to be vacated or lifted.

                  (c) Regulatory  Approvals.  All regulatory approvals necessary
         to consummate  the  transactions  contemplated  hereby are obtained and
         remain in full force and effect and all  statutory  waiting  periods in
         respect  thereof have expired or been  terminated  and no such approval
         contains  a  condition  or  requirement  that  is  reasonably   likely,
         individually or in the aggregate,  to have a Material Adverse Effect on
         Parent, Virbac, AGNU or the Surviving Corporation.



                                                        39

<PAGE>




                  (d) Third Party  Consents.  All consents or approvals of third
         parties  (other  than  the  regulatory  approvals  referred  to in  the
         preceding  paragraph)  required  for  consummation  of the  Merger  are
         obtained and are in full force and effect, except for any such consents
         or  approvals   the  absence  of  which  is  not   reasonably   likely,
         individually or in the aggregate,  to have a Material Adverse Effect on
         Parent, Virbac, AGNU or the Surviving Corporation.

                  (e) Tax Opinion of Virbac's  Counsel.  Virbac has  received an
         opinion of Jones,  Day,  Reavis & Pogue,  counsel to Virbac,  dated the
         Effective  Date,  substantially  to the effect that, for federal income
         tax purposes, (i) the Merger will be treated as a reorganization within
         the meaning of Section 368(a) of the Code, (ii) each of Virbac and AGNU
         will be a party to the  reorganization  within  the  meaning of Section
         368(b) of the Code,  (iii) no gain or loss will be recognized by Virbac
         or AGNU  as a  result  of the  Merger,  (iv)  no  gain or loss  will be
         recognized by Parent upon the exchange pursuant to the Merger of Virbac
         Common Stock solely for AGNU Common Stock,  (v) the basis of the Merger
         Shares  received by the Parent  pursuant to the Merger will be the same
         as the basis of Virbac Common Stock  exchanged  therefor,  and (vi) the
         holding period of the Merger Shares  received by Parent pursuant to the
         Merger will include the holding period of Virbac Common Stock exchanged
         therefor,  provided  those  shares of Virbac  Common Stock were held as
         capital assets as of the Effective Time of the Merger. In rendering its
         opinion,  Jones,  Day,  Reavis  &  Pogue  may  require  and  rely  upon
         representations contained in letters from Parent, Virbac and AGNU.

                  (f) Non-Competition  Agreement.  VBSA will have entered into a
         non-competition agreement with AGNU, substantially in the form attached
         as Exhibit G hereto.

         Section  7.2.  Additional   Conditions  to  Obligations  of  AGNU.  The
obligations of AGNU to effect the Merger and the other transactions contemplated
in this  Agreement are also subject to the following  conditions,  any or all of
which may be waived,  in whole or in part, to the extent permitted by applicable
law:

                  (a)  Representations  and Warranties.  The representations and
         warranties  of Parent and Virbac  made in this  Agreement  are true and
         correct in all material  respects on and as of the Effective  Time with
         the same effect as though such  representations and warranties had been
         made on and as of the Effective Time,  except for  representations  and
         warranties  that  speak as of a  specific  date or time  other than the
         Effective  Time (which  need only be true and  correct in all  material
         respects  as  of  such  date  or  time).  AGNU  will  have  received  a
         certificate of each of the Chief  Executive  Officer or Chief Financial
         Officer of Parent and Virbac to that effect.

                  (b) Agreements and Covenants.  The agreements and covenants of
         Parent and Virbac  required to be performed on or before the  Effective
         Time have been performed in


                                                        40

<PAGE>




         all material respects. AGNU will have received a certificate of each of
         the Chief Executive  Officer or Chief  Financial  Officer of Parent and
         Virbac to that effect.

                  (c) No Material  Adverse  Effect.  At any time on or after the
         date of this  Agreement  there has been no Material  Adverse  Effect on
         Virbac or any of its Subsidiaries, in the aggregate.

                  (d) Cash Infusion by Parent.  Parent will have contributed the
         Cash Infusion to Virbac.

                  (e) Fairness  Opinion.  AGNU's  Board of  Directors  will have
         received the AGNU Fairness Opinion.

                  (f) Supply  Agreement.  VBSA will have  entered  into a Supply
         Agreement  with Virbac  substantially  in the form  attached  hereto as
         Exhibit H.

         Section 7.3. Additional Conditions to Obligations of Parent and Virbac.
The  obligations  of  Parent  and  Virbac  to effect  the  Merger  and the other
transactions  contemplated  in this  Agreement are also subject to the following
conditions any or all of which may be waived, in whole or in part, to the extent
permitted by applicable law:

                  (a)  Representations  and Warranties.  The representations and
         warranties  of AGNU made in this  Agreement are true and correct in all
         material  respects on and as of the Effective Time with the same effect
         as though such  representations  and warranties had been made on and as
         of the Effective Time, except for  representations  and warranties that
         speak as of a  specific  date or time  other  than the  Effective  Time
         (which  need only be true and  correct in all  material  respects as of
         such date or time).  Virbac  will have  received a  certificate  of the
         Chief  Executive  Officer  or Chief  Financial  Officer of AGNU to that
         effect.

                  (b) Agreements and Covenants.  The agreements and covenants of
         AGNU required to be performed on or before the Effective Time have been
         performed  in all  material  respects.  Virbac  will  have  received  a
         certificate of the Chief Executive  Officer or Chief Financial  Officer
         of AGNU to that effect.

                  (c) No Material  Adverse  Effect.  At any time on or after the
         date of this  Agreement  there has been no Material  Adverse  Effect on
         AGNU or any of its Subsidiaries, in the aggregate.

                  (d)  Stockholders'  Agreements.   The  individuals  listed  on
         Schedule 7.3(d) will have entered into a stockholder's agreement in the
         form attached hereto as Exhibit I.



                                                         41

<PAGE>





                               ARTICLE VIII
                          POST-CLOSING COVENANTS

         Section 8.1. Stock Repurchase. Within 60 days after the Effective Time,
AGNU  will  make  and  complete  a  tender  offer  to  repurchase   (the  "Stock
Repurchase") up to 1,000,000 shares of the issued and outstanding shares of AGNU
Common Stock,  except for the Merger Shares,  which the Virbac  Stockholders may
not tender,  at a price of $3.00 per share,  which price has been  determined by
the Board of Directors of AGNU.

         Section 8.2.      Contingent Stock Repurchase.

                  (a) Contingent Repurchase. If, during the period ending on the
         second anniversary of the Closing Date (the "Contingent  Period"),  the
         closing sale price as reported under the Nasdaq  National Market Issues
         in The Wall  Street  Journal  of the AGNU  Common  Stock (or such other
         exchange  on which  such  shares are  listed)  does not equal or exceed
         $3.00  per  share  (the  "Contingent  Price")  for  any  period  of  40
         consecutive  trading  days,  AGNU will,  within 10 business days of the
         termination  of the  Contingent  Period,  commence  a  tender  offer to
         repurchase  (the  "Contingent  Repurchase"),  at $3.00 per  share  (the
         "Repurchase  Price"),  up to $4,185,000  of the issued and  outstanding
         shares of AGNU Common  Stock,  except for (i) shares held by the Virbac
         Stockholders,  which  Virbac  Stockholders  agree  not to tender in the
         Contingent  Repurchase,  (ii) Merger Shares transferred pursuant to the
         Affiliate  Agreement,  attached  hereto as  Exhibit  C, as to which the
         transferee has agreed not to tender in the Contingent  Repurchase,  and
         (iii) shares  issued  during the  Contingent  Period (other than shares
         issued  pursuant  to the  exercise  of  options  outstanding  as of the
         Effective Time,  which will be included in the Contingent  Repurchase),
         if  any,  which  Surviving  Corporation  agrees  to  issue  only if the
         transferee  thereof  agrees not to tender such shares in the Contingent
         Repurchase.

                  (b) Contingent Capital Contribution.  If, upon the termination
         of the  Contingent  Period,  AGNU is  required  to make the  Contingent
         Repurchase,  Parent will, within 10 business days of the termination of
         the Contingent  Period,  make a capital  contribution  (the "Contingent
         Contribution")  to AGNU in the amount of  $4,185,000  in exchange for a
         number  of newly  issued  shares  of AGNU  Common  Stock  equal to such
         contribution divided by the Repurchase Price.

                  (c)  Adjustments.  The  Board of  Directors  of the  Surviving
         Corporation will make or provide for such adjustments in the Contingent
         Price,  and  Repurchase  Price as such  Board,  in its sole  discretion
         exercised in good faith,  determines  is equitably  required to prevent
         dilution or enlargement of the Contingent  Price,  the number of shares
         subject to the  Contingent  Repurchase  and the cost to AGNU to conduct
         such  Contingent  Repurchase that otherwise would result from any stock
         dividend, stock split, reverse stock split or


                                                         42

<PAGE>




         other change in the capital structure of AGNU or event having a similar
         effect. Any fractional shares resulting from the foregoing  adjustments
         will be eliminated.

                  (d) Board Discretion.  The Board of Directors of the Surviving
         Corporation may, in its sole discretion,  determine to permit Parent to
         make the Contingent  Repurchase as required under Section 8.2, in which
         event Parent would not be required to make the Contingent Contribution.

         Section 8.3. Minority  Stockholder  Director Nominee.  Parent agrees to
cause its  representatives on the Surviving  Corporation's Board of Directors to
nominate, and further agrees to vote the shares of AGNU Common Stock it holds at
such time in favor of,  Bruce G. Baker,  if he is then  serving as a director of
the  Surviving  Corporation,  or if he is not, then Alec L.  Poitevint,  II, for
election to a successive  three-year  term  commencing at the annual  meeting of
stockholders in 2002. If Mr.  Poitevint is not then serving as a director of the
Surviving Corporation and the individuals listed on Schedule 7.3 then own in the
aggregate 40% of the shares such  individuals own as of the Effective Time, then
Parent will cause its  representatives on the Surviving  Corporation's  Board of
Directors to nominate,  and Parent agrees to vote its shares in favor of, Robert
E. Hormann,  or if he is not then available to serve or otherwise has a conflict
of interest,  then Robert W. Schlutz, or if he is not then available to serve or
otherwise  has a conflict  of  interest,  then W. M.  Jones,  Jr.  (unless he is
unavailable  or has a conflict of  interest,  in which event Parent will have no
further  obligation  hereunder  to  nominate  and vote its  shares in favor of a
minority  stockholder  representative),   for  election  to  a  three-year  term
commencing at the annual meeting of stockholders in 2002.

         Section 8.4.  Release of VBSA Guarantee.  If, as of the Effective Time,
the Virbac  Debt is not paid in full and all  obligations  under the  promissory
notes or loan agreements  relating thereto released,  the Surviving  Corporation
will take all actions necessary to cause the indirect  guarantees issued by VBSA
of such Virbac Debt,  which are  described on Item 8.4 of the Virbac  Disclosure
Schedule, to be released.

         Section 8.5. Fiscal Year of Surviving Corporation. Within 30 days after
the Effective Time, the Surviving  Corporation will change its fiscal year to be
based upon a  calendar  year such that the  fiscal  year will be from  January 1
through December 31.

         Section 8.6.  Further  Assurances.  If, at any time after the Effective
Time, the Surviving  Corporation considers or is advised that any further deeds,
assignments or assurances in law or any other acts are  necessary,  desirable or
proper (a) to vest, perfect or confirm, of record or otherwise, in the Surviving
Corporation,  the title to any  property  or right of Virbac  acquired  or to be
acquired by reason of, or as a result of, the Merger,  or (b) otherwise to carry
out the purposes of this  Agreement,  AGNU and Virbac  agree that the  Surviving
Corporation  and its proper  officers and directors will execute and deliver all
such  deeds,  assignments  and  assurances  in law  and do all  acts  necessary,
desirable or proper to vest,  perfect or confirm title to such property or right
in the  Surviving  Corporation  and  otherwise to carry out the purposes of this
Agreement, and that the


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<PAGE>




proper officers and directors of the Surviving  Corporation are fully authorized
in the name of AGNU and Virbac to take any and all such action.


                            ARTICLE IX
                       REGISTRATION RIGHTS

         Section 9.1. Demand Registration. (a) At any time and from time to time
after the third  anniversary of the Effective  Time,  the Surviving  Corporation
will,  upon the written demand (the  "Registration  Demand") of Parent,  use its
commercially  reasonable  best  efforts  to effect  the  registration  under the
Securities Act (by means of a "shelf"  registration  statement  pursuant to Rule
415 under the Securities Act, if so requested by the Parent and if the Surviving
Corporation  is eligible  therefore at such time) of such number of  Registrable
Securities  (as defined  below) as indicated in the  Registration  Demand.  Such
Registration  Demand will specify the intended  method or methods of disposition
of  such   Registrable   Securities   (subject  to   modification  as  otherwise
contemplated in this Agreement).

                  (b) If a  Registration  Demand is initiated  and the Surviving
         Corporation  wishes to offer any of its  securities in connection  with
         the  registration,  no such  securities may be offered by the Surviving
         Corporation  without  the  consent of Parent  (such  consent  not to be
         unreasonably withheld).

                  (c) Upon  receipt of the Demand  Registration,  the  Surviving
         Corporation will expeditiously effect the registration under the Act of
         the Registrable  Securities and use its reasonable best efforts to have
         such  registration  become and remain  effective as provided in Section
         9.6.

                  (d) Parent has the right to select  the  underwriters  for any
         underwritten  offering  pursuant  to this  Section  9.1 as long as such
         underwriters are reasonably acceptable to the Surviving Corporation and
         any  Registration  Demand  pursuant  to this  Section  9.1 may,  at the
         election of Parent, be in the form of a "firm commitment"  underwritten
         offering;  provided,  however, that no such offering may be in the form
         of a "best  efforts" or similar type offering.  In this regard,  if the
         Surviving Corporation has established a "shelf" registration  statement
         pursuant to Section 9.1(a),  upon the request of Parent,  the Surviving
         Corporation  will  amend  the  shelf  registration  to  provide  for an
         underwritten  offering otherwise consistent with the provisions herein,
         the  provisions  of such  underwritten  offering to be in effect for at
         least 120 days (or such lesser time as Parent requests)  whereupon,  at
         the  request of Parent or the  election of the  Surviving  Corporation,
         such  "shelf"  registration  will be amended to no longer  reference an
         underwritten offering.

                  (e) As used in this Agreement,  "Registrable Securities" means
         the Merger Shares or any securities  issued or issuable with respect to
         any  Merger  Shares  by way of a stock  dividend  or stock  split or in
         connection  with a  combination  of shares,  recapitalization,  merger,
         consolidation or other reorganization or otherwise.


                                                         44

<PAGE>





         Section 9.2. Indemnification by the Surviving Corporation. In the event
of any registration of any Registrable  Securities under the Securities Act, the
Surviving Corporation will, and hereby does, indemnify and hold harmless Parent,
its directors, officers, each other Person who participates as an underwriter in
the offering or sale of such  Registrable  Securities and each other Person,  if
any, who controls Parent or any such  underwriter  within the meaning of Section
15 and Section 20 of the Securities Act against any losses,  claims,  damages or
liabilities,  joint or several,  to which Parent or any such director or officer
or underwriter or controlling Person may become subject under the Securities Act
or otherwise, insofar as such losses, claims, damages or liabilities (or actions
or proceedings,  whether commenced or threatened,  in respect thereof) arise out
of or are based upon any untrue  statement  or alleged  untrue  statement of any
material  fact  contained  in  any   registration   statement  under  which  the
Registrable Securities were registered under the Securities Act, any preliminary
prospectus,  final prospectus or summary prospectus  contained  therein,  or any
amendment or supplement  thereto,  or any omission or alleged  omission to state
therein a material fact  required to be stated  therein or necessary to make the
statements  therein  in light of the  circumstances  in which they were made not
misleading.  The Surviving  Corporation  will  reimburse  Parent,  and each such
director, officer, underwriter and controlling Person for any legal or any other
expenses  reasonably  incurred  by  them in  connection  with  investigating  or
defending any such loss, claim,  liability,  action or proceeding.  However, the
Surviving Corporation will not be liable in any such case to the extent that any
such loss, claim, damage, liability (or action or proceeding in respect thereof)
or expense arises out of or is based upon an untrue  statement or alleged untrue
statement or omission or alleged omission made in such  registration  statement,
preliminary  prospectus,  final  prospectus,  summary  prospectus,  amendment or
supplement in reliance upon and in conformity with written information furnished
to the Surviving Corporation through an instrument duly executed by or on behalf
of such  Parent,  specifically  stating  that  it is for use in the  preparation
thereof.  Such indemnity will remain in full force and effect  regardless of any
investigation  made by or on behalf of Parent or any such  director,  officer or
controlling  Person and will survive the transfer of the Registrable  Securities
by Parent.

         Section 9.3.  Indemnification by Parent. The Surviving  Corporation may
require,  as  a  condition  to  including  any  Registrable  Securities  in  any
registration  statement  filed  pursuant  to  Section  9.1  that  the  Surviving
Corporation  will  receive  an  undertaking  satisfactory  to it from  Parent to
indemnify  and hold  harmless  (in the same manner and to the same extent as set
forth in Section 9.2) the Surviving Corporation,  each director of the Surviving
Corporation, each officer of the Surviving Corporation signing such registration
statement,  each other Person who participates as an underwriter in the offering
or sale of such  Registrable  Securities  and each  other  Person,  if any,  who
controls the Surviving  Corporation within the meaning of Section 15 and Section
20 of the  Securities  Act  (other  than  Parent)  with  respect  to any  untrue
statement or alleged  untrue  statement in or omission or alleged  omission from
such registration  statement,  any preliminary  prospectus,  final prospectus or
summary prospectus  contained therein or any amendment or supplement thereto, if
such  untrue  statement  or alleged  untrue  statement  or  omission  or alleged
omission was made in reliance  upon and in conformity  with written  information
furnished to the Surviving Corporation through an instrument duly executed by


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<PAGE>




Parent,  specifically  stating  that  it is for use in the  preparation  of such
registration  statement,   preliminary  prospectus,  final  prospectus,  summary
prospectus,  amendment or  supplement.  Such indemnity will remain in full force
and effect regardless of any investigation made by or on behalf of the Surviving
Corporation  or any such  director,  officer or  controlling  Person (other than
Parent)  and will  survive  the  transfer  by  Parent of the  securities  of the
Surviving Corporation being registered.

         Section  9.4.  Notices of Claims,  Etc.  Promptly  after  receipt by an
indemnified  party of notice of the  commencement  of any  action or  proceeding
involving  a claim  referred to in Section 9.2 or 9.3,  such  indemnified  party
will, if a claim in respect thereof is to be made against an indemnifying party,
give notice to the latter of the commencement of such action; provided, however,
that the failure of any indemnified party to give notice as provided herein will
not relieve the indemnifying  party of its obligations under Section 9.2 or 9.3,
except to the extent that the indemnifying party is actually  prejudiced by such
failure  to give  notice.  In  case  any  such  action  is  brought  against  an
indemnified  party,  unless in such indemnified  party's  reasonable  judgment a
conflict of interest between such indemnified and indemnifying parties may exist
that would make such separate representation  advisable or the indemnified party
may have  defenses not  available to the  indemnifying  party in respect of such
claim, the  indemnifying  party will be entitled to participate in and to assume
the defense thereof,  with counsel  reasonably  satisfactory to such indemnified
party. After notice from the indemnifying party to such indemnified party of its
election  to assume the  defense  thereof,  the  indemnifying  party will not be
liable to such  indemnified  party for any legal or other expenses  subsequently
incurred  by the  latter in  connection  with the  defense  thereof  other  than
reasonable costs of investigation.  No indemnifying party will be liable for any
settlement of any action or proceeding  effected without its written consent. No
indemnifying party will,  without the consent of the indemnified party,  consent
to entry of any judgment or enter into any settlement  which does not include as
an  unconditional  term  thereof the giving by the claimant or plaintiff to such
indemnified  party of a release  from all  liability in respect to such claim or
litigation.  The  indemnification  required in connection with the  Registration
Demand will be made by periodic payments of the amount thereof during the course
of the  investigation  or  defense,  as and when bills are  received or expense,
loss, damage or liability is incurred.

         Section 9.5.  Other  Indemnification.  Indemnification  similar to that
specified in Sections 9.2 and 9.3 (with appropriate modifications) will be given
by  the  Surviving   Corporation   and  Parent  with  respect  to  any  required
registration or other qualification of Registrable  Securities under any federal
or  state  law or  regulation  of any  governmental  authority  other  than  the
Securities Act.

         Section 9.6.  Contribution.  In order to provide for just and equitable
contribution in circumstances in which the indemnity  agreement  provided for in
Sections  9.2  and  9.3  is for  any  reason  held  to be  unenforceable  by the
indemnified  parties although applicable in accordance with its terms in respect
of any losses,  claims,  damages or liabilities suffered by an indemnified party
referred to therein, each applicable indemnifying party, in lieu of indemnifying
such  indemnified  party,  will contribute to the amount paid or payable by such
indemnified party as a result of such


                                                         46

<PAGE>




losses, claims, damages or liabilities,  in such proportion as is appropriate to
reflect the relative  fault of the Surviving  Corporation on the one hand and of
the Parent on the other in connection  with the  statements  or omissions  which
resulted in such losses,  claims,  damages or liabilities,  as well as any other
relevant  equitable   considerations.   The  relative  fault  of  the  Surviving
Corporation on the one hand and of the Parent (including,  in each case, that of
their respective officers, directors, employees, agents and controlling Persons)
on the other will be determined by reference to, among other things, whether the
untrue or alleged  untrue  statement of a material  fact relates to  information
supplied by the  Surviving  Corporation,  on the one hand, or by or on behalf of
Parent,  on the other, and the parties'  relative intent,  knowledge,  access to
information and opportunity to correct or prevent such statement or omission.

         Section 9.7. Registration  Covenants of the Surviving  Corporation.  In
the  event  that any  Registrable  Securities  of  Parent  are to be  registered
pursuant to Section 9.1(e) the Surviving  Corporation  covenants and agrees that
it will use its reasonable best efforts to effect the registration and cooperate
in the  sale  of  the  Registrable  Securities  to be  registered  and  will  as
expeditiously as possible:

                  (a) (i) prepare and file with the SEC a registration statement
         with respect to the  Registrable  Securities  (as well as any necessary
         amendments or supplements  thereto) (a  "Registration  Statement")  and
         (ii)  use  its  reasonable  best  efforts  to  cause  the  Registration
         Statement  to become  effective as promptly as  practicable  and in any
         event within 90 days of receipt of the  Registration  Demand  (subject,
         however, to the provisions of Section 9.9;

                  (b) prior to the filing  described  above in  Section  9.7(a),
         furnish  to  Parent  copies  of  the  Registration  Statement  and  any
         amendments or  supplements  thereto and any  prospectus  forming a part
         thereof  with respect to which (i) Parent will be afforded a reasonable
         opportunity to review and comment  thereon prior to filing and (ii) the
         Surviving  Corporation  will  not  unreasonably  decline  to make  such
         changes thereto required by the Act;

                  (c) notify Parent,  promptly  after the Surviving  Corporation
         receives notice thereof,  of the time when the  Registration  Statement
         becomes effective or when any amendment or supplement or any prospectus
         forming a part of the Registration Statement has been filed;

                  (d) notify  Parent  promptly of any request by the SEC for the
         amending or supplementing  of the Registration  Statement or prospectus
         or for additional  information and promptly deliver to Parent copies of
         any comments received from the SEC;

                  (e) (i) advise Parent after the Surviving Corporation receives
         notice or otherwise  obtains  knowledge of the issuance of any order by
         the SEC suspending the  effectiveness of the Registration  Statement or
         any  amendment  thereto  or of the  initiation  or  threatening  of any
         proceeding for that purpose and (ii) promptly use its best efforts to


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<PAGE>




         prevent  the  issuance of any stop order or to  obtain  its  withdrawal
         promptly if a stop order is issued;

                  (f) (i) subject to Section 9.9,  prepare and file with the SEC
         such amendments and supplements to the Registration  Statement and each
         prospectus  forming  a part  thereof  as may be  necessary  to keep the
         Registration  Statement  continuously  effective for the period of time
         necessary  to  permit   Parent  to  dispose  of  all  its   Registrable
         Securities,  provided,  however,  that the Surviving Corporation is not
         required to keep the  Registration  Statement  effective  if all of the
         Registrable Securities held by Parent could be sold without restriction
         pursuant to the provision of Rule 144(k) under the  Securities  Act and
         (ii) comply with the  provisions of the  Securities Act with respect to
         the   disposition  of  all  Registrable   Securities   covered  by  the
         Registration  Statement  during  such  period  in  accordance  with the
         intended methods of disposition by Parent set forth in the Registration
         Statement;

                  (g)   furnish  to  Parent   such   number  of  copies  of  the
         Registration  Statement,  each  amendment and supplement  thereto,  the
         prospectus  included  in the  Registration  Statement  (including  each
         preliminary   prospectus)  and  such  other  documents  as  Parent  may
         reasonably  request  in  order to  facilitate  the  disposition  of the
         Registrable Securities owned by such Parent;

                  (h) use its  reasonable  best  efforts to  register or qualify
         such  Registrable  Securities  under such other  securities or blue sky
         laws of such  jurisdictions  as  determined by the  underwriters  after
         consultation  with the Surviving  Corporation and Parent and do any and
         all  other  acts  and  things  which  may be  reasonably  necessary  or
         advisable  to  enable  Parent to  consummate  the  disposition  in such
         jurisdictions  of  the  Registrable   Securities   (provided  that  the
         Surviving  Corporation  is not required to (i) qualify  generally to do
         business  in any  jurisdiction  in  which  it would  not  otherwise  be
         required to qualify but for this Section 9.7 (h),  (ii) subject  itself
         to  taxation  in any such  jurisdiction,  or (iii)  consent  to general
         service of process in any such jurisdiction);

                  (i)  notify  Parent,  at any time when a  prospectus  relating
         thereto is required to be delivered  under the  Securities  Act, of the
         happening of any event as a result of which the Registration  Statement
         would  contain an untrue  statement of a material fact or omit to state
         any material  fact  required to be stated  therein or necessary to make
         the statements therein not misleading;

                  (j) if the  Common  Stock is not then  listed on a  securities
         exchange,  use  its  reasonable  best  efforts,   consistent  with  the
         then-current  corporate  structure  of the  Surviving  Corporation,  to
         facilitate the listing of the Common Stock on the Nasdaq Stock Market;

                  (k)  provide a transfer  agent and  registrar,  which may be a
         single entity,  for all the  Registrable  Securities not later than the
         effective date of the Registration Statement; it


                                                         48

<PAGE>




         being  hereby   agreed  that  Parent  will  furnish  to  the  Surviving
         Corporation such  information  regarding Parent and the plan and method
         of  distribution  of Registrable  Securities  intended by Parent as the
         Surviving  Corporation  may from  time to time  reasonably  request  in
         writing and is required by law or by the SEC in connection therewith;

                  (l) with respect to a firm commitment  underwritten  offering,
         enter into such customary  agreements  (including,  as appropriate,  an
         underwriting  agreement  in  customary  form)  and take all such  other
         action,  if any, as Parent or the  underwriters  reasonably  request in
         order to expedite or  facilitate  the  disposition  of the  Registrable
         Securities pursuant to this Agreement;

                  (m)  (i)  make  available  for   inspection  by  Parent,   any
         underwriter   participating   in  any   disposition   pursuant  to  the
         Registration  Statement  and any  attorney,  accountant  or other agent
         retained by Parent or any such  underwriter all relevant  financial and
         other  records,  pertinent  corporate  documents and  properties of the
         Surviving  Corporation  and  (ii)  cause  the  Surviving  Corporation's
         officers,  directors and  employees to supply all relevant  information
         reasonably  requested  by  Parent  or any such  underwriter,  attorney,
         account or agent in connection with the Registration Statement;

                  (n) use its reasonable  best efforts to cause the  Registrable
         Securities covered by the Registration  Statement to be registered with
         or approved by such other governmental  authorities as may be necessary
         to enable  Parent to consummate  the  disposition  of such  Registrable
         Securities;

                  (o)  cause  the  Surviving  Corporation's  independent  public
         accountants  to provide to the  underwriters,  if any,  and Parent,  if
         permissible,  a comfort  letter in  customary  form and  covering  such
         matters of the type customarily covered by comfort letters;

                  (p)  cooperate  and assist in any filings  required to be made
         with the NASD or Nasdaq  and in the  performance  of any due  diligence
         investigation by an underwriter in an underwritten offering; and

                  (q) use all reasonable  efforts to facilitate the distribution
         and sale of any Registrable  Securities to be offered  pursuant to this
         Agreement,   including   without   limitation,   by  making  road  show
         presentations,  holding  meetings with  potential  investors and taking
         such other actions as are  appropriate  or as are requested by the lead
         managing underwriter of an underwritten offering.

     Section 9.8. Expenses.  In connection with any Registration Demand pursuant
to Section 9.1, the Surviving Corporation will pay all registration,  filing and
NASD or Nasdaq fees, all fees and expenses of complying with securities or "blue
sky"  laws  and  any  commissions,   fees  and   disbursements  of  underwriters
customarily  paid by sellers of securities  (based upon offering  proceeds to be
received by it). In any Registration Demand, the Surviving Corporation will be


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<PAGE>




responsible  for the  fees  and  disbursements  of  counsel  for  the  Surviving
Corporation  and if its  independent  public  accountants and premiums and other
costs of policies of insurance,  if any, against  liabilities arising out of the
public  offering of the  Registrable  Securities;  provided,  that the Surviving
Corporation  will not be required to obtain such insurance.  The Parent will pay
for  underwriting  discounts  and  commissions  customarily  paid by  sellers of
securities (based upon offering proceeds to be received by Parent).

         Section 9.9. Rule 145. So long as the Surviving  Corporation is subject
to the  reporting  requirements  of Section 13 or 15(d) of the Exchange Act, the
Surviving  Corporation  will take all  actions  reasonably  necessary  to enable
Parent  to sell  the  Registrable  Securities  without  registration  under  the
Securities  Act within the  limitation  of the  exemptions  provided by Rule 145
under the Securities  Act, as such Rule may be amended from time to time, or any
similar rule or regulation  hereafter adopted by the SEC,  including filing on a
timely basis all reports required to be filed by the Exchange Act.

         Section 9.10.  Limitation on Requirement to File or Amend  Registration
Statement.  Anything in this  Agreement to the contrary  notwithstanding,  it is
understood  and agreed that the  Surviving  Corporation  will not be required to
file a Registration Statement,  amendment or post-effective amendment thereto or
prospectus  supplement or to supplement or amend any  Registration  Statement if
the  Surviving  Corporation  is then  involved  in  discussions  concerning,  or
otherwise engaged in, an acquisition,  disposition,  financing or other material
transaction  and the  Surviving  Corporation  determines  in good faith that the
making of such a filing,  supplement or amendment at such time would  materially
adversely  affect or interfere  with such  transaction  so long as the Surviving
Corporation  will,  as  soon  as  practicable  thereafter,   make  such  filing,
supplement or amendment, to the extent then practicable; provided, however, that
in no event  will any delay in filing  pursuant  to this  Section  9.10 be for a
period in excess of 60 days or be exercised by the  Surviving  Corporation  more
than twice during any 365 day period (and,  at least 70 days must pass after the
end of any such delay period  prior to the date the  Surviving  Corporation  may
exercise its second delay period in any 365 day period) without a written waiver
executed and  delivered by the holders of a majority of the Merger  shares.  The
Surviving  Corporation  will promptly give each Purchaser  written notice of any
such  postponement,  containing  a general  statement  of the  reasons  for such
postponement and an approximation of the anticipated delay;  provided,  however,
that nothing herein requires the Surviving  Corporation to disclose any terms of
any such  transaction  or the  identity of any party  thereto.  Upon  receipt by
Parent of notice of an event of the kind described in this Section 9.10,  Parent
will forthwith  discontinue  any  disposition of  Registrable  Securities  until
receipt of notice  from the  Surviving  Corporation  that such  disposition  may
continue and of any supplemented or amended prospectus indicated in such notice.




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<PAGE>




                                  ARTICLE X
                       TERMINATION, AMENDMENT AND WAIVER

     Section 10.1. Termination.  This Agreement may be terminated and the Merger
may be  abandoned at any time prior to the  Effective  Time,  whether  before or
after approval of the plan of merger  contained in this Agreement and the Merger
by the stockholders of AGNU:

                  (a)      by mutual written consent of each of AGNU, Parent and
         Virbac;

                  (b) by AGNU if VBSA,  Parent or Virbac  breaches,  or fails to
         comply with, in any material respect any of its obligations  under this
         Agreement or any representation or warranty made by Parent or Virbac in
         this  Agreement is  incorrect in any material  respect when made or has
         since ceased to be true and correct in any material respect,  such that
         as a  result  of  such  breach,  failure  or  misrepresentation  of the
         conditions  set forth in 7.2(a) or  7.2(b)  would not be  satisfied  (a
         "Virbac Termination  Breach");  provided,  however, that if such Virbac
         Termination  Breach is curable by VBSA, Parent or Virbac within 45 days
         through the exercise of its  commercially  reasonable  best efforts and
         for so long as VBSA,  Parent  or  Virbac  continues  to  exercise  such
         commercially  reasonable best efforts after notice of such breach, AGNU
         may not terminate this Agreement pursuant to this Section 10.1(b);

                  (c) by Virbac if AGNU  breaches,  or fails to comply with,  in
         any material respect any of its obligations under this Agreement or any
         representation  or warranty  made by AGNU is  incorrect in any material
         respect  when made or has since  ceased to be true and  correct  in any
         material  respect,  such that as a result of such  breach,  failure  or
         misrepresentation  of the  conditions  set forth in  Section  7.3(a) or
         7.3(b) would not be satisfied (an "AGNU Termination Breach"); provided,
         however, that if such AGNU Termination Breach is curable by AGNU within
         45 days  through  the  exercise  of its  commercially  reasonable  best
         efforts and for so long as AGNU continues to exercise such commercially
         reasonable  best efforts  after  notice of such breach,  Virbac may not
         terminate this Agreement pursuant to this Section 10.1(c);

                  (d)  by  either  AGNU  or  Virbac  if  any  decree,  permanent
         injunction,  judgment,  order or other action by any court of competent
         jurisdiction or any Governmental  Corporation preventing or prohibiting
         consummation   of  the   Merger   (an   "Order")   becomes   final  and
         nonappealable;  provided,  that,  the party  seeking to terminate  this
         Agreement   pursuant  to  this  Section  10.1(d)  must  have  used  all
         commercially reasonable best efforts to remove such Order;

                  (e) by either  AGNU or Virbac if the plan of merger  contained
         in  this  Agreement   fails  to  receive  the  requisite  vote  of  the
         stockholders of AGNU at the AGNU Stockholders' Meeting;



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<PAGE>




                  (f) by  Virbac  if the  Board  of  Directors  of  AGNU  or any
         committee thereof withdraws or modifies in any manner adverse to Virbac
         its  approval  or  recommendation  of the Merger or this  Agreement  or
         approves,  recommends or announces an intention to approve or recommend
         any Acquisition Proposal;

                  (g) by AGNU upon five Business  Days' notice and in accordance
         with Section 6.9, provided it has complied with the provisions  thereof
         and that it  complies  with the  provisions  of  Section  6.13  related
         thereto;

                  (h) by  either  Virbac  or AGNU  if the  Merger  has not  been
         consummated   before  February  28,  1999  (the  "Termination   Date");
         provided, however, that (i) the right to terminate this Agreement under
         this  Section  10.1(h)  will not be  available to Virbac if Parent's or
         Virbac's  failure to use its  commercially  reasonable  best efforts to
         fulfill any  obligation  under this Agreement has been the cause of, or
         resulted  in, the failure of the  Effective  Time to occur on or before
         the  Termination  Date,  and (ii) the right to terminate this Agreement
         under this Section  10.1(h) is not available to AGNU if AGNU's failure,
         or the failure of its stockholders who are subject to the Stockholders'
         Agreements  set forth as  Exhibit I hereto,  to use their  commercially
         reasonable best efforts to fulfill any obligation  under this Agreement
         has been the cause of, or  resulted  in, the  failure of the  Effective
         Time to occur on or before the Termination Date;

                  (i) by (A)  either  Virbac or AGNU on or before the date which
         is 30 days from the date  hereof if such  party  objects  to any of the
         matters reviewed pursuant to Section 6.1, provided,  however,  that any
         objection  rendered  by such party is based on  reasonable  and prudent
         business  judgment and not made in an arbitrary and capricious  manner,
         or (B) Virbac if it fails to receive an opinion of AGNU's environmental
         counsel in the form  attached as Exhibit J hereto or  assessment  of an
         environmental  engineering  firm acceptable to Virbac,  as the case may
         be;  provided  further,  that if  Virbac  is  unable  to  complete  its
         investigation as a result of AGNU's failure to afford reasonable access
         to the properties and executive  personnel of AGNU or promptly  provide
         all  information  requested  by Virbac  pursuant to Section  6.1,  then
         Virbac may extend the termination  date under this Section 10.1(i) to a
         date which is not more than 45 days from the date hereof; or

                  (j) by Virbac  in the  event  (A) there is any  strike or work
         stoppage  involving AGNU or any of its  Subsidiaries or (B) AGNU enters
         into   collective   bargaining   agreements   with  the   International
         Longshoremen's  Association or International  Brotherhood of Electrical
         Workers,   including  extensions  of  existing  collective   bargaining
         agreements with such unions  ("Bargaining  Agreements"),  on terms that
         differ  materially  or are  otherwise  less  favorable to AGNU from the
         terms in the Bargaining Agreements.

         Section 10.2. Effect of Termination. In the event of the termination of
this Agreement  pursuant to Section 10.1,  this Agreement will forthwith  become
void, there will be no liability on the part of AGNU, Parent or Virbac or any of
their  respective  officers or  directors  to the other  parties  hereto and all
rights and obligations of any party hereto will cease except as otherwise


                                                         52

<PAGE>




provided in Sections 6.12, 6.13 and 10.1; provided, however, that nothing herein
will  relieve  any party from  liability  for the  willful  breach of any of its
representations,   warranties,   covenants  or  agreements  set  forth  in  this
Agreement;  provided,  further,  that if Virbac has received the Termination Fee
contemplated  by Section  6.13,  AGNU will not  assert or pursue in any  manner,
directly or  indirectly,  any claim or cause of action  against Virbac or any of
its  officers  or  directors  based upon the  exercise of the right of Virbac to
terminate  this  Agreement  under  Section  10.1(f)  (other than claims based on
Virbac's  failure to act in good faith or based on an alleged knowing or willful
breach of this Agreement by Virbac or any of its officers, directors, employees,
agents or Affiliates).

         Section 10.3.  Amendment,  Extension and Waiver. This Agreement may not
be amended  except by an instrument  in writing  signed on behalf of each of the
parties hereto.  Any agreement on the part of a party hereto to any extension or
waiver  will be valid  only if set forth in writing  executed  on behalf of such
party,  but such  waiver or  failure  to insist on strict  compliance  with such
obligation, covenant, agreement or condition will not operate as a waiver of, or
estoppel with respect to, any subsequent or other failure. Subject to applicable
law, at any time prior to the Effective  Time (whether  before or after approval
by the  stockholders  of AGNU),  the parties may (a) amend this  Agreement,  (b)
extend the time for the  performance of any of the  obligations or other acts of
any other party hereto,  (c) waive any inaccuracies in the  representations  and
warranties contained herein or in any document delivered pursuant hereto, or (d)
waive  compliance  with any of the  agreements or conditions  contained  herein;
provided,   however,   that  following   approval  of  this  Agreement  and  the
transactions  contemplated hereby by the stockholders of AGNU, there may not be,
without further approval of such  stockholders,  any waiver or amendment of this
Agreement that alters or reduces the amount of  consideration to be delivered to
AGNU pursuant to Section 7.2(d) of this  Agreement,  modifies the obligations of
AGNU to effect tender offers  pursuant to Sections 8.1 and 8.2 of this Agreement
or reduces or changes the consideration to be paid to stockholders in connection
with such tender offers.

                                 ARTICLE XI
                             GENERAL PROVISIONS

         Section  11.1.   Nonsurvival   of   Representations,   Warranties   and
Agreements.  The  representations,  warranties and agreements in this Agreement,
the Confidentiality  Agreement,  and in any certificate  delivered in connection
with the  Closing  will be deemed to be  conditions  to the  Merger and will not
survive the  Effective  Time,  except for (i) Section 6.7  (Indemnification  and
Insurance),  which  section  will,  to  the  extent  contemplated,  survive  the
Effective  Time or earlier  termination  of this  Agreement,  (ii)  Section  6.2
(Confidentiality),  Section 6.11 (Conduct of Business), Section 6.12 (Expenses),
Section 6.13 (Termination Fee) Article IX (Registration Rights) and Section 10.2
(Effect of Termination)  of this  Agreement,  each section of which will, to the
extent contemplated therein, survive termination of this Agreement indefinitely,
(iii)  Article  VIII  (Post-Closing  Covenants)  and  (iv)  the  Confidentiality
Agreement,  which will, to the extent contemplated therein,  survive termination
of this Agreement.



                                                         53

<PAGE>




         Section 11.2. Notices.  All notices and other  communications  given or
made  pursuant  hereto  will be in writing  and will be deemed to have been duly
given or made as of the  date  delivered,  mailed  or  transmitted,  and will be
effective  upon  receipt,  if  delivered  personally,  mailed by  registered  or
certified mail (postage prepaid, return receipt requested) to the parties at the
following  addresses  (or at such other address for a party as will be specified
by like changes of address) or sent by electronic transmission to the telecopier
number specified below:

                  (a)      If to AGNU:

                           Agri-Nutrition Group Limited
                           13801 Riverport Drive, Suite 111
                           Maryland Heights, MO  63043
                           Telecopier:      (314) 298-0902
                           Attention:       Bruce Baker, CEO and President

                           With a copy (which will not constitute notice) to:
                           Dyer, Ellis & Joseph
                           Watergate, Suite 1100
                           600 New Hampshire Avenue, N.W.
                           Washington, D.C.  20037
                           Telecopier:      (202) 944-3068
                           Attention:       Michael Joseph, Esq.

                  (b)      If to VBSA or Parent:

                           Virbac S.A.
                           13 emme rue - L.I.D.
                           06517 Carros Cedex
                           France
                           Telecopier:      011 33 4 92 08 71 75
                           Attention:       Pascal Boissy, President

                  (c)      If to Virbac:

                           Virbac, Inc.
                           3200 Meachum Blvd.
                           Fort Worth, TX  76137
                           Telecopier:  817-831-8327
                           Attention:  Brian A. Crook, D.V.M., CEO

                           With a copy (which will not constitute notice) to:

                           Jones, Day, Reavis & Pogue
                           2300 Trammell Crow Center


                                                         54

<PAGE>




                           2001 Ross Avenue
                           Dallas, Texas 75201
                           Telecopier: 214-969-5100
                           Attention:  Richard K. Kneipper, Esq.

         Section 11.3. Certain Definitions.  For purposes of this Agreement, the
term:

                  (a)  "Affiliate"  means a Person that directly or  indirectly,
         through one or more intermediaries,  Controls,  is Controlled by, or is
         under Common Control with, the first mentioned Person;

                  (b) "Blue Sky Laws" means state securities or "blue sky" laws;

                  (c)  "Business  Day" means any day other than a Saturday  or a
         day on which banks in the State of Texas are authorized or obligated to
         be closed;

                  (d) "Control"  (including the terms "Controlled by" and "under
         Common Control with") means the  possession,  directly or indirectly or
         as trustee or executor,  of the power to direct or cause the  direction
         of  the  management  or  policies  of a  Person,  whether  through  the
         ownership  of stock or as trustee or  executor,  by  contract or credit
         arrangement or otherwise;

                  (e)  "Material  Adverse  Effect"  on a party  means an  event,
         change or  occurrence  which,  individually  or together with any other
         event,  change or occurrence,  which is or could reasonably be expected
         to be so adverse as to result in a severe and  critical  impairment  of
         (i) the business, properties, prospects, assets, financial condition or
         results of  operations  of such party and its  Subsidiaries  taken as a
         whole,  or (ii) the  ability of such party to perform  its  obligations
         under  this  Agreement  or  to  consummate  the  Merger  or  the  other
         transactions  contemplated  by  this  Agreement;   provided,   however,
         "Material Adverse Effect" does not include the effect of (1) changes in
         the economy of the United States generally,  (2) general changes in the
         availability of credit, general changes in interest rates, money supply
         levels or the discount rate of the Federal Reserve System or changes in
         laws or regulations of general applicability or interpretations thereof
         by courts or  governmental  authorities  affecting  animal  health care
         companies or the animal health industry generally,  (3) changes in GAAP
         or  regulatory  accounting  principles  generally  applicable to animal
         health care  companies or companies  engaged in a business which is the
         same or  similar  to that of the  parties  hereto,  (4)  changes in the
         condition  (financial  or  otherwise)  or results of  operations of the
         party and its  Subsidiaries  taken as a whole that are caused directly,
         substantially  and  primarily by the general  changes  specified in (1)
         through (3) above,  (5) actions and  omissions of a party or any of its
         Subsidiaries  taken with the prior informed  consent of the other party
         in contemplation of the transactions  contemplated  hereby, and (6) the
         Merger and the reasonable expenses incurred in connection therewith and
         compliance  with the  provisions  of this  Agreement  on the  operating
         performance of such party.


                                                         55

<PAGE>





                  (f)  "Ordinary  Course of  Business"  means the  ordinary  and
         normal  course of the conduct of the  business of the party  consistent
         with past practices;

                  (g) "Person"  means an individual,  corporation,  partnership,
         association, trust, unincorporated organization,  other entity or group
         (as defined in Section 13(d) of the Exchange Act); and

                  (h)  "Subsidiary"  means,  with  respect  to  any  party,  any
         corporation   or   other   organization,    whether   incorporated   or
         unincorporated, of which (i) such party or any other subsidiary of such
         party  is  a  general  partner  (excluding  partnerships,  the  general
         partnership  interests of which held by such party or any subsidiary of
         such  party do not  have a  majority  of the  voting  interest  in such
         partnership),  or (ii) at least a majority of the  securities  or other
         interests  having  by  their  terms  ordinary  voting  power to elect a
         majority  of the  board  of  directors  or  others  performing  similar
         functions  with respect to such  corporation or other  organization  is
         directly or indirectly  owned or Controlled by such party and/or by any
         one or more of its subsidiaries.

     Section 11.4.  Headings.  The headings  contained in this Agreement are for
reference  purposes  only  and  will  not  affect  in any  way  the  meaning  or
interpretation of this Agreement.

         Section 11.5. Entire Agreement.  This Agreement and the Confidentiality
Agreement  (together  with the Exhibits,  the Schedules and the other  documents
delivered  pursuant to this  Agreement)  constitute the entire  agreement of the
parties and supersedes all prior agreements and  undertakings,  both written and
oral,  between the parties,  or any of them,  with respect to the subject matter
hereof.

         Section  11.6.  Severability.  If any term or other  provision  of this
Agreement is invalid,  illegal or incapable of being enforced by any rule of law
or public  policy,  all other  conditions  and provisions of this Agreement will
nevertheless  remain in full force and effect so long as the  economic  or legal
substance of the transactions  contemplated hereby is not affected in any manner
materially  adverse to any party. Upon such determination that any term or other
provision is invalid, illegal or incapable of being enforced, the parties hereto
will  negotiate  in good  faith to modify  this  Agreement  so as to effect  the
original intent of the parties as closely as possible in an acceptable manner to
the end that  transactions  contemplated  hereby  are  fulfilled  to the  extent
possible.

         Section  11.7.  No  Third  Party  Beneficiaries.  Except  as  otherwise
provided in Section 6.7 hereof,  this Agreement is binding upon and inure solely
to the benefit of each party hereto,  and nothing in this Agreement,  express or
implied, is intended to or means confer upon any other Person any right, benefit
or remedy of any nature whatsoever under or by reason of this Agreement.



                                                         56

<PAGE>




     Section 11.8.  Governing  Law. This Agreement is governed by, and construed
in accordance  with, the laws of the State of Delaware  without giving effect to
applicable principles of conflicts of law.

         Section  11.9.  Disclosure  Schedules.  The  disclosures  made  on  any
disclosure  schedule,  including  the Virbac  Disclosure  Schedule  and the AGNU
Disclosure  Schedule,  with respect to any representation or warranty are deemed
to be made with respect to any other  representation  or warranty  requiring the
same or similar  disclosure to the extent that the relevance of such  disclosure
to other representations and warranties is evident from the information included
in such disclosure schedule.  The inclusion of any matter on any such disclosure
schedule will not be deemed an admission by any party that such listed matter is
material or that such listed matter has or would have a Material  Adverse Effect
on Parent, Virbac or AGNU.

         Section  11.10.  Counterparts.  This  Agreement  may  be  executed  and
delivered in one or more  counterparts,  and by the different  parties hereto in
separate counterparts, each of which when executed and delivered means be deemed
to be an original but all of which taken  together  constitute  one and the same
agreement.


                [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]


                                                         57

<PAGE>




         IN WITNESS  WHEREOF,  the parties hereto have caused this Agreement and
Plan of Merger to be executed and delivered as of the date first written above.


AGRI-NUTRITION GROUP LIMITED




Bruce G. Baker
President and Chief Executive Officer


VIRBAC S.A.



By:                                                           
Name:                                                         
Title:                                                        

VIRBAC, INC.




Brian A. Crook
Chief Executive Officer




                              58






FOR IMMEDIATE RELEASE

Contact: 
For Agri-Nutrition Group Limited:         For Virbac, Inc.:
Robert J. Elfanbaum                       Dr. Brian Crook
Chief Financial Officer                   President and Chief Executive Officer
(314) 298-7330                            (817) 831-5030


                     AGRI-NUTRITION GROUP AND VIRBAC
                        ANNOUNCE MERGER AGREEMENT
    -----------------------------------------------------------------------

                Combination to Create Major Companion Animal Business

MARYLAND  HEIGHTS,  Missouri,  and  FORT  WORTH,  Texas  (October  19,  1998) --
Agri-Nutrition Group Limited (Nasdaq/NM:AGNU) and Virbac, Inc. jointly announced
today the  signing  of a  definitive  merger  agreement.  Under the terms of the
agreement, Virbac, Inc., a subsidiary of the French public animal health company
Virbac, S.A. (Second Marche/SICOVAM:3157),  will merge with Agri-Nutrition Group
Limited,  creating a companion  animal  health  company with  combined 1998 U.S.
sales of approximately $50 million.  Virbac, S.A. will hold approximately 60% of
the outstanding  stock of the combined  companies,  which will be renamed Virbac
Corporation.  The transaction,  which is subject to approval by Agri-Nutrition's
stockholders, government approval and other customary conditions, is expected to
close in January 1999.

         In  addition  to  combining   its  U.S.   operating   subsidiary   with
Agri-Nutrition  Group,  Virbac, S.A. will fund the purchase of approximately 10%
of  Agri-Nutrition's  outstanding  common stock at $3.00 per share pursuant to a
public  tender  offer.  Two years after the merger,  if the market  price of the
stock has not been at least  $3.00 per share for 40  consecutive  trading  days,
Virbac will  invest  additional  capital in the merged  company to fund a second
tender offer for an additional 15% of the outstanding shares at $3.00 per share.
Virbac, S.A. will also invest approximately $13 million working capital and debt
retirement funds in the combined company at closing.

         Commenting  on the  transaction,  Bruce G. Baker,  president  and chief
executive officer of Agri-Nutrition Group Limited,  said, "During the last year,
we  completed  a major  acquisition  and a  number  of other  initiatives  which
strengthened  our platform for future growth.  Teaming with Virbac  advances our
growth timetable  significantly  and capitalizes on the platform that is already
in place. The combination  creates a very strong company with the critical mass,
resources and skills  necessary to take  advantage of the changing  needs of the
rapidly consolidating  companion animal industry. By combining our expertise and
resources  with  those  of  Virbac,  we  are  delivering  better  value  to  our
shareholders and the customers of both companies."

                                                      -MORE-

<PAGE>

         Pascal Boissy,  president of Virbac,  S.A. added, "This merger is a key
element of Virbac Group's  strategy which focuses on reinforcing its position in
the companion animal market, especially in the U.S., to gain significant size to
respond to the market  needs and  opportunities.  The  synergies,  complementary
products, and the potential economies of scale between the companies will enable
the new  entity to achieve  the  profitability  available  in this  dynamic  and
growing  industry.  We are very  confident of the success of this merger and the
improved value it will bring to all shareholders."

         Brian A. Crook,  D.V.M., chief executive officer of Virbac, Inc., said,
"A  significant  strength for the merged  entity will be the ability to have the
size and resource base required to bring the R&D technologies and pharmaceutical
pipeline of Virbac,  S.A. to the United States,  as well as provide a magnet for
marketing of third-party  products.  The new company will also capitalize on the
global  marketing  strengths of Virbac,  S.A. and  aggressively  expand  current
Agri-Nutrition products internationally.  In addition, we will aggressively seek
acquisition and alignment  candidates in support of our core business to deliver
continually improving value to customers and stockholders."

     Pascal Boissy will serve as chairman of the board of the combined  company,
Brian A. Crook, D.V.M. will serve as chief executive officer, and Bruce G. Baker
will serve as executive vice  president.  Both Dr. Crook and Mr. Baker will hold
seats on the combined  company's  Board of Directors as will Mr. Alec Poitevint,
current  chairman of  Agri-Nutrition  Group.  In addition,  Robert J. Elfanbaum,
chief financial officer of Agri-Nutrition Group, will continue to serve as chief
financial officer for the new company.

         Virbac,  Inc.,  located  in  Fort  Worth,  Texas,  is  a  wholly  owned
subsidiary of Virbac,  S.A., located in Carros,  France. With 1997 sales of $241
million,  Virbac, S.A. is the 11th largest veterinary  pharmaceutical company in
the  world  and  is  the  largest  veterinary-only  company.  Virbac,  Inc.  was
originally founded in the United States in 1982 as Allerderm,  Inc., focusing on
unique and innovative products for veterinary dermatology,  and was purchased by
Virbac,  S.A. in 1987. Today,  Virbac's Allerderm brand is the United States and
Canadian market leader in veterinary dermatology.

         Agri-Nutrition  Group Limited is a world leader in pet oral hygiene and
dental care and produces,  markets and  distributes the St. JON, Mardel and Zema
lines of health, grooming, and nutritional products for the pet industry through
its  Pet  Health  Care  Division  as well as pet,  animal  health  and  chemical
specialty products through its PM Resources private label/contract manufacturing
division.

     This press release  contains  forward-looking  information made pursuant to
the safe harbor  provisions of the Private  Securities  Litigation Reform Act of
1995.  These  forward-looking  statements  may be affected by certain  risks and
uncertainties  described  in the  Company's  filings  with  the  Securities  and
Exchange  Commission.  The Company's actual results could differ materially from
such forward-looking statements. -###-



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