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Dried Whole Aureomycin Mash and Meat and Bone Scraps for Growing-Fattening Swine

Iowa State College³

Abstract

To a corn-soybean oil meal ration, fortified with B-vitamins, vitamin A, vitamin D₂ and minerals including trace minerals, was added dried whole aureomycin mash without meat and bone scraps and with two levels of meat and bone scraps. The drylot treatments were replicated in a second experiment.

The addition of the dried whole aureomycin mash increased average daily gains significantly in both drylot and pasture. The increased gains were obtained regardless of the presence of meat and bone scraps in the ration. Pigs fed the dried whole aureomycin mash were more uniform in hair color and finish.

The addition of meat and bone scraps did not significantly increase gains in either experiment. There was no interaction between the effects due to dried whole aureomycin mash and meat and bone scraps.

Either aureomycin or other nutritional factors present in the APF (dried whole unextracted aureomeycin mash) helped control diarrhea. No diarrhea occurred in the pigs which were fed APF in their rations. Some pigs had diarrhea in all of the lots not receiving the dried whole aureomycin mash.

No significant difference in daily gains was obtained between the depleted and non-depleted pigs.

¹ The authors wish to acknowledge the assistance of Prof. Paul Homeyer and Helen Maddock in the statistical analysis of the data.

² The authors wish to express their appreciation of Lederle Laboratories Div., American Cyanamid Co., Pearl River, New York and Dr. T. H. Jukes for furnishing the B-vitamins and APF (dried whole aureomycin mash) used in these experiments.

³ Animal Husbandry Department, Ames, Iowa. Acknowledgment is gratefully made to Don Quinn, Animal Nutrition Farm foreman, and his associates for their assistance.