Feed Grade DL-Methionine is used in all animal species as chicken and swine, and particularly used in monogastrics. It ensures the adequate supply of sulfur amino acids. Additionally, diets for piglets and growing pigs can show a considerable deficiency in methionine, especially when formulated to achieve low nitrogen excretion for ecological reasons. Such a deficiency can be conveniently compensated by using Feed Grade DL-Methionine.