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Studies on the Protein Requirement of Suckling Pigs

Cornell University^,2

Abstract

Four trials are reported in which isolated soybean protein and casein were used in simulated milk diets to study the protein requirements of baby pigs during the period from 2 to 30 days of age. Diets containing 16, 20, 24, 28 and 32 percent of protein, on an air-dry feed basis, were studied. The diets with only 16 or 20 percent of protein always gave slowest growth rates and resulted in retarded animals. Fastest growth and most efficient feed utilization occurred on the 32 percent protein diet, but 24 and 28 percent of protein gave relatively satisfactory results.

¹ The authors gratefully acknowledge the assistance of a financial grant supporting these studies from the Western Condensing Co., Appleton, Wisconsin. Vitamin B₁₂ was generously supplied by L. Michaud, Merck & Co., Newark, N. J., and lecithin by J. Eichberg, American Lecithin Co., Woodside, L. I. 77, N. Y. Dr. L. E. Lloyd assisted with the statistical analysis.

² Department of Animal Husbandry, Cornell University, Ithaca, N. Y.