EFFECT OF SELENIUM SUPPLEMENTATION ON CLINICAL AND PHYSIOLOGICAL INDICES OF LACTATING COWS ON THE NORTHERN URALS
The need for lactating cow’s selenium is 0.1-0.2 mg per 1 kg of diet dry matter, depending on the availability of dietary unsaturated fatty acids, vitamin E, sulfur or arsenic as arsenic, sulfur and inhibits the absorption and metabolism of selenium body. It’s objective to study the effect of feeding of mineral and organic forms of selenium in the winter diet of high yielding cows (6 thousand kg) of milk during milking at a dose of 0.2 mg selenium per 1 kg of dry matter intake. One of the objectives was to study the experiences of clinical and physiological state to ditch in the experimental groups according to blood biochemical parameters. The analysis of the chemical composition and nutritional value of feed calculated, to determine the content of selenium. Feeding rations were based on actuation palatability of feed, their chemical composition. By diet I test group during the dry period and the period of milking village nit added sodium (20 mg per 1 head per day) given with concentrates, ensure delivery of 0.2 mg per 1 kg of dry matter intake. To ration II experimental group during the experiment added Sel-Plex - 2 g per head handle ensuring the intake of 0.2 mg per 1 kg of dry matter. Biochemical parameters of blood: in the experimental group II compared to the control elevation of hemoglobin was 0.19 g%, erythrocytes - 0.17 mln/mm. The total protein, calcium and phosphorus in the blood of the group of cows the control group exceeded 0.12, 0.10 and 0.04 mg%. In the blood of cows I experimental group had elevated levels of erythrocytes by 0.05 mln/mm, calcium and phosphorus, respectively, 0.03 and 0.16 mg%, glucose - 0.2 and 3.54 mg% (td = 2.74). Simultaneously blood cows I and II groups experienced improved glucose. In general, data on indicators show a high level of metabolism in cow’s under-skilled groups that affected the value of their productivity.