Why is the inclusion of synthetic L-lysine mandatory in wheat-sorghum-based layer diets to maintain egg yolk and albumen weight?

Lysine is the second limiting amino acid in poultry diets and is classified as a "strictly ketogenic" amino acid that must be supplied via feed. Lysine is a vital component of the structural proteins in skeletal muscles and is highly concentrated in the egg white (albumen) and the vitelline membrane of the egg yolk. In Pakistan, when corn is replaced with alternative grains like wheat, broken rice, or sorghum, the dietary lysine level drops significantly, as these grains have very poor lysine profiles compared to corn. If a nutritionist does not supplement this feed with synthetic L-Lysine, the ribosome cannot complete the translation and synthesis of key yolk proteins (vitellogenin) and albumen proteins (ovalbumin and conalbumin). This lack of amino acid balance limits both yolk follicle growth and albumen thickness, resulting in smaller egg sizes, watery egg whites, and a severe drop in egg weight. Supplementing diets with crystalline L-Lysine HCl ensures a balanced ideal amino acid profile, maximizing egg weight and maintaining premium Haugh units. Farmers can study amino acid ratio models in the Poultry Encyclopedia, buy high-purity L-Lysine on Poultry Plaza, monitor daily feed additive rates on Poultry Rates, and trade on Murghi Mandi.