Lysine is one of the essential amino acids for animals and plays a central role in feed nutrition. Its core function isto serve as the first limiting amino acid, participating in protein synthesis and directly determining the growth rate, feed utilization efficiency, and overall production performance of animals (especially pigs and poultry).

Specifically, its main functions include:

1. Promotes growth and tissue repair: it is the basic raw material for synthesizing body protein, muscle, enzymes, and hormones.

2. Improves feed conversion ratio: it balances amino acid ratios so that other amino acids in the feed can be used more efficiently, reducing feed costs.

3. Improves carcass quality: it helps increase lean meat percentage and reduce backfat thickness.

4. Enhances immune function: it is essential for the synthesis of antibodies and immune factors.

5. Affects reproductive performance: it has an important impact on the fertility of breeding livestock and poultry.