DYNAMICS OF CHANGES IN THE INDICES OF MINERAL METABOLISM IN THE BLOOD OF QUAILS AT DIFFERENT PERIODS OF OVIPOSITION AND FOR THE INFLUENCE OF A COMPLEX OF ESSENTIAL AMINO ACIDS IN COMBINATION WITH VITAMIN E
The article reflects the results of the study of the effect of a complex of essential amino acids lysine, methionine, threonine and vitamin E on the parameters of mineral metabolism and egg productivity of quails. Calcium and phosphorus are necessary for poultry during the period of intensive egg laying, since these substances are included in a large number in the shell, from their presence in the diet and in the body, the egg-laying of quails and the quality of the eggs obtained depend to a large extent. It was found that the level of calcium in the serum of quails increased by 11,2-15,0 % (p < 0,05), inorganic phosphorus - an average of 19,2 % (p < 0,05), indicating an increase in use these elements in the processes of egg formation. There was also an increase in serum alkaline phosphatase activity in the quails of the experimental groups compared to the control, which ensures active transfer of calcium and inorganic phosphorus from the depot and the use of these elements in the process of egg formation. Egg productivity in quail-laying hens that received a complex of amino acids with vitamin E increased by 5,3-13,8 % (p < 0,05, p < 0,001) as compared to the control group.