Metabolism of calcium and phosphorus in the body of lactating sheep of the Balbas breed when using sodium selenite

Abstract

The metabolism of calcium and phosphorus in the body of lactating sheep of the Balbas breed fed with sodium selenite is discussed. Coarse forage accounts for 65.4-72.6% of the total fodder balance fed to sheep in the Republic of Azerbaijan. Straw and hay make up 50-60% of the total coarse forage fed to sheep during the winter on farms, and up to 80% on some farms. The main properties of coarse feeds are high content of cellulose (30-70%), relatively low protein (4-15%) and fat (0.9-2%). The amount of ash in these feeds is 9-11%. Ash contains a certain amount of calcium, phosphorus, cobalt, copper, manganese, iodine and other elements. Undoubtedly, increasing the amount of coarse fodder especially straw and grass is one of the most important issues. The main condition is maintaining the normal body condition of sheep during pregnancy and protecting the physiological condition of the embryo as well as feeding the lamb taking into account the need for energy, organic and mineral substances, and vitamins. The research goal was to study the effect of different doses of sodium selenite on the digestion of feed and regulation of calcium and phosphorus metabolism in the body of pregnant ewes. An action plan for more efficient use of fodder for livestock development is being developed and implemented in the country. The digestion rate of phosphorus indoors was as following: 56.09% in the control group, 62.61% in the 2nd trial group, 73.57% in the 3rd group and 61.12% in the 4th group. Overall, the ratio of the calcium to phosphorus was 1.45:1 in the control group, 1.93:1 in the 1st trial group; 2.6:1 in the 23nd group; 1.92:1 in the 3rd group.