Lysine and the sulfur amino acids (SAA), are known to exhibit specific effects on carcass composition. This accounts for the higher requirement when breast muscle (BM) yield is used as the basis for setting the lysine requirement as compared to weight gain. Lysine supplementation, at levels above the requirement for maximal growth rate, results in specific and significant effects on body composition. It is apparent that increasing ORBIT-LYSINE intake affects body composition by increasing BM yield and decreasing AF percentage. These effects, which can be added to a curvilinear effect on growth rate, induce a beneficial effect on FCR.

Lysine and the sulfur amino acids (SAA), are known to exhibit specific effects on carcass composition. This accounts for the higher requirement when breast muscle (BM) yield is used as the basis for setting the lysine requirement as compared to weight gain. Lysine supplementation, at levels above the requirement for maximal growth rate, results in specific and significant effects on body composition. It is apparent that increasing ORBIT-LYSINE intake affects body composition by increasing BM yield and decreasing AF percentage. These effects, which can be added to a curvilinear effect on growth rate, induce a beneficial effect on FCR.