Challenges facing bovine practice--preventive medicine opportunities.
D000003:Abattoirs; D000383:Agriculture; D000821:Animal Feed; D000818:Animals; D002417:Cattle / Q000254:growth & development; D003365:Costs and Cost Analysis; D008372:Manure; D011315:Preventive Medicine; D014481:United States; D014730:Veterinary Medicine / Q000191:economics
D008372:Manure