Observations on the growth-promoting effects of procaine penicillin and zinc bacitracin on chicks in different environments.
D000821:Animal Feed; D000818:Animals; D001414:Bacitracin; D002645:Chickens / Q000254:growth & development*; D004032:Diet; D010402:Penicillin G Procaine; D015032:Zinc
D001414:Bacitracin; D010402:Penicillin G Procaine; D015032:Zinc