Lysine Supplementation of Corn- and Barley-Base Diets for Growing-Finishing Swine

Abstract

Four experiments involving 268 growing-finishing swine were conducted to study the value of supplemental lysine in swine diets. Corn-soybean meal diets containing 12 or 10% protein were improved by an addition of 0.05% L-lysine monohydrochloride. Supplementation of the low protein diets with lysine resulted in faster gains, more efficient feed conversion and leaner carcasses. For corn-soybean meal diets higher in protein, the results from an addition of lysine were more variable; however, slight improvements in gain and feed conversion were observed. Although the lysine content in the barley-soybean meal diets were higher than in the corn-soybean meal diets, a greater response was observed to supplemental lysine in the barley diets than in corn diets. This would indicate that the availability of the lysine in barley is less than that of corn or soybean meal. Copyright © 1963. American Society of Animal Science . Copyright 1963 by American Society of Animal Science