Kryvenok М. Theoretical and experimental substantiation of amino acid feeding of hens egg-laying productivity.

Expanded view of the dependence between the level and ratio of essential amino acids and performance, physiological and biochemical status of the body laying hens and commercial herd and replacements egg directions productivity. First scientifically substantiated and experimentally proved that the effective ratio of amino acids in the feed at the same nutrition for energy, protein and fat has a positive effect on the productivity of adult hens. Changing relationships between essential amino acids in the diet of chickens has a greater influence on performance, digestibility of feed nutrients, absorption and utilization of amino acids than changes in the levels of individual amino acids. It is proved that the needs of hens in amino acids and crude protein decrease with age disproportionately. Found that the digestibility of feed nutrients, availability and utilization of essential amino acids in the body chickens depend not only on their level in the feed, but also on the ratio of the phases feeding the birds and performance.