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The Effect of Oleandomycin on the Performance of the Young Growing Pig¹

Iowa Agricultural and Home Economics Experiment Station^,3, Ames

Abstract

Two experiments involving 40 baby pigs and 72 growing pigs initially averaging 9.4 lb. and 29.3 lb. body weight, respectively, were conducted to study the effect of varying levels of oleandomycin on growth rate and feed conversion. With baby pigs, maximum response was observed at the highest level fed (10 mg./lb. of feed), which resulted in a 44% improvement in growth rate and a 25% improvement in feed conversion as compared to the pigs fed the control diet. The optimum level for the growing pig (5 mg./lb. of feed) resulted in a 6.9% improvement in rate of gain and 7.2% improvement in feed conversion.

¹ Journal Paper No. J-3792 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa. Project No. 959. Experiments 874 and 928.

² The authors gratefully acknowledge Chas. Pfizer & Co., Terre Haute, Ind., for Grants-in-aid and materials which partially supported this research.

³ Department of Animal Husbandry.