The effect of various levels of penicillin and chlortetracycline in the diet of fattening pigs.
D000818:Animals; D002751:Chlortetracycline / Q000494:pharmacology*; D004032:Diet; D010406:Penicillins / Q000494:pharmacology*; D013552:Swine
D010406:Penicillins; D002751:Chlortetracycline
CHLORTETRACYCLINE/effects; PENICILLIN/effects; SWINE