The first limiting amino acid in corn/soybean meal diets for swine and the 2nd limiting amino acid for poultry. L-Lysine HCL is also used in several pet food applications.
The 2nd limiting amino acid in swine and the 3rd limiting in poultry. With a purity no less than 98.5%, L-threonine plays an important role in protein utilization, maintenance, and digestion.
As the balance of amino acids improves with L-Lysine, DL-Methionine, and L-Threonine, Tryptophan generally becomes the next limiting amino acid.
A branched chain amino acid (BCAA), L-Valine can become limiting in swine and poultry diets.