ПОКАЗАТЕЛИ КРОВИ БЫЧКОВ КАЛМЫЦКОЙ ПОРОДЫ НА ОТКОРМЕ ПРИ ВКЛЮЧЕНИИ В ИХ РАЦИОН МЕСТНЫХ ПРИРОДНЫХ КОРМОВЫХ ДОБАВОК В УСЛОВИЯХ ЦЕНТРАЛЬНОЙ ЯКУТИИ

Abstract

Obtaining high results in the production of highquality beef in beef cattle breeding is impossible without well-organized fattening of gobies. In the conditions of Yakutia, fattening of gobies from 15 months of age can be carried out in autumn, after the summer grazing feeding. Under economic conditions of feeding, high growth rates of fattening young animals cannot be obtained. Therefore, intensive fattening with the use of mineral feeding of cattle is used. The paper presents research materials on the morphological and biochemical composition of blood and its serum in calves of the Kalmyk breed, which are on scientific and industrial fattening. In the experimental group of animals, local natural feed additives – zeolite and salt – were added to the diet, which served as adaptogens and sources of mineral elements. During the feeding period before the slaughter, the morphological composition of blood in terms of indicators has insignificant decreases, but within the physiological norm. We see these changes in the gobies of the experimental control group and associate them with a sharp decrease in atmospheric air temperature to –15 °C in the first ten days of November 2019 and a constant transition to roughage. It is also possible that the use of natural feed additives in the form of feeding zeolite and salt increases metabolic processes in the animal's body. A comparative analysis of biochemical parameters in the blood serum of gobies of the experimental group confirmed significant differences in hepatic enzymes (ALT and AST) in animals. The use of non-traditional natural feed additives with the inclusion in the diet of fattening gobies affects the hematological and biochemical parameters of blood and its serum, and, accordingly, meat quality.