The optimal concentration of digestible methionine plus cysteine for broiler chicken performance determined by statistical models

The objective of this study was to determine the optimal concentration of digestible methionine plus cystine (Met+Cys) for broiler chickens. We allocated 1,296 male broiler chickens in a completely randomized design with six treatments and nine replicates of 24 broiler chickens each. From 1 to 21 days old, broiler chickens were fed a basal diet. At day 21, the experimental diets were offered, which consisted of a basal diet (with no inclusion of synthetic methionine) and five diets supplemented [...]