Peanut Meal, Mixtures of Soybean and Cottonseed and Mixtures of Soybean and Peanut Meals as Sources of Protein for Baby Chicks

CONCENTRATES of vitamin B12 and APF (animal protein factor) have become available during the past year to replace the animal protein factor usually supplied when animal protein by-products are added to poultry and other animal feeds. It has been shown by many investigators that when these concentrates are used to supplement a diet composed chiefly of corn or milo and soybean meal, the diet will support a rapid rate of growth in chicks. Relatively few data are available when another protein concentrate such as cottonseed or peanut meal or mixtures of two or more plant protein concentrates are used with an APF supplement and with no animal protein by-products. Richardson and Blaylock (1950) showed that cottonseed meal low in gossypol was satisfactory as the sole source of protein, for the growth of chicks to 6 weeks of age, when it was supplemented with both lysine and vitamin B12 concentrate. Soybean . . .