Effect of soybean antitrypsin on growth of the chick

Abstract

Summary Chicks were fed complete diets containing protein exclusively from soybean meal, either cooked or raw or in combinations, at a total of 20% protein. As little as 5% of raw protein was accompanied by nearly maximal growth retardation due to the tryptic inhibitor in raw soybean meal. The growth inhibition was overcome by adding trypsin to the diet.