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Antibiotic Supplementation of Corn-Cottonseed Meal Rations for Growing Pigs

Mississippi Agricultural Experiment Station

Abstract

Five dry lot group feeding experiments were conducted in which the value of certain antibiotic supplements to a corn-cottonseed meal ration were studied. In three experiments aureomycin was used and in two experiments penicillin was the antibiotic. Both aureomycin and penicillin supplementation appeared to increase feed consumption and the efficiency of feed utilization by growing pigs. Increases in daily rate of gain were secured in all except one of the comparisons made. These increases in rate of gain produced by aureomycin or penicillin supplementation of a corn-cottonseed meal ration were near but did not reach levels necessary for statistical significance.