Studies with Corn-Soya Laying Diets: 2. Optimum Combinations of Corn and Soybean Protein

Abstract

CORN and soybean oil meal are the major sources of amino acids in high energy laying diets. When the protein level of such diets is altered, the amino acid pattern is altered simultaneously due to the shift in the relative amounts of protein originating from corn and soybean oil meal. For this reason data regarding the optimum combination of corn and soybean protein would be pertinent to the interpretation of experiments concerned with levels of protein.Almquist and Grau (1944) fed graded combinations of soybean and sesame protein to chicks in isonitrogenous diets and found that a sesame-soybean protein ration of 7:13 maximized growth. Following a preliminary experiment, this technique was used in two experiments reported herein in which graded combinations of corn and soybean protein were fed to laying pullets in isonitrogenous diets at suboptimal protein levels. The combination which maximized performance was considered to have provided the best …