... of sulfur amino acids,especially of the essential methionine. Because of methionine being first-limiting in typical poultry diets,its ... and growing pigs can show a considerable deficiency in methionine,especially when fomulated to achieve low nitrogen excretion for ... bag,with labels required by customers.Shelf life:Five yearsKeywordDL-Methionine , DL-Metionina ,DL-2-Amino-4-(methylthio)butyric acid ...