See more about this topic in the Dickinson Legal Research Resources:
U.S. Government Resources: Agriculture

AnimalLaw.com
http://www.animallaw.com/index.cfm

Website run by the National Institute for Animal Law, AnimalLaw.com offers a searchable database of laws and legislation, along with some full-text model laws.

National Agricultural Law Center
http://www.nationalaglawcenter.org/

The National Agricultural Law Center is part of the University of Arkansas. The page includes reading rooms on a variety of areas of agricultural and food law with each room containing electronic resources, statutes, case law, regulations, reports, etc. Also available on the page are research publications from 1985 to current, an updated newsletter, case summaries of recent developments, a glossary, farm bills, congressional links, and more.

Pennsylvania Department of Agriculture
http://www.agriculture.state.pa.us/

The Department of Agriculture page contains information on commissions, laboratories, events, diseases, and the various bureaus in the state concerned with agriculture. The page is searchable and also contains publications, market reports, and produce summaries.