DL-Methionine is one of the basic units for composing the protein, is the only sulfur bearing amino acid among the essential amino acids, it participated in the transmethylation interior the animal body, the phosphorus metabolism and the adrenalin, choline and creatine synthesis, it also is the raw material of the protein and cystine synthesis. Methionine is unable to synthesize in the animal body, must take in from food. Adds it in the feed, can promote the poultry to grow, increase lean meat quantity and reduce the feeding cycle. DL-Methionine Feed Grade is approved for use in all animal species. Particularly for use in monogastrics, it ensures the adequate supply of sulfur amino acids, especially of the essential methionine. Because of methionine being first-limiting in typical poultry diets, its use has been well established for many years. Additionally, diets for piglets and growing pigs can show a considerable deficiency in methionine, especially when fomulated to achieve low nitrogen excretion for ecological reasons. Such a deficiency can be conveniently compensated for by using DL-Methionine Feed Grade.