Feed Additive- L-lysine

Lysine is known as a growth-promoting amino acid, and its primary biological function is to participate in the synthesis of various key proteins in the body, including skeletal muscle, peptide hormones, plasma proteins, and enzymes. It exists in two isomeric forms: L-lysine and D-lysine.

Since D-lysine lacks biological activity, L-lysine is the form that can be absorbed and utilized by the body. As a result, the market demand is mainly for L-lysine, with L-lysine used as a feed additive accounting for 90% of the total. L-lysine is commonly found in the form of hydrochloride and sulfate salts, appearing as white or light brownish powder or granules. L-lysine hydrochloride typically has a purity of over 98.5%, with L-lysine content exceeding 78.8%. L-lysine sulfate contains 51% lysine (equivalent to 65% feed-grade L-lysine sulfate) and also includes at least 15% other amino acids, providing animals with more comprehensive and balanced nutrition.

Currently, there are two main types of lysine used in animal feed enterprises, both derived from industrial production. One is L-lysine hydrochloride, and the other is L-lysine sulfate. Both types of lysine can supplement the lysine deficiency in animals, improve the balance of amino acids in feed, enhance the nutritional value of cereal-based feeds, increase the conversion rate of energy feeds, boost animal immunity, reduce the protein content in animal diets, enable the formulation of low-protein diets, and conserve feed protein resources. Generally, L-lysine sulfate is more commonly used in pig and poultry feeds.