Butler animal health supply, Sigma tau, Schering plough, Herd management software, Janssen cilag, Boehringer ingelheim, Vet medical, Novo nordisk, Smithkline beecham, Eli lilly, Aventis pasteur, Schwarz pharma, Bristol myers squibb, Fort doge, Warner lambert, Wyeth ayerst, Abbott laboratories, Glaxo wellcome, Old dominion animal health, Johnson and johnson