TRACE ELEMENT CONTENT IN BLOOD OF CATTLE WITH ALIMENTARY ANEMIA AND HYPOCUPROSIS, AND IN SOIL SAMPLES OF THE TÖV AIMAG OF MONGOLIAAND THE KYAKHTINSKY DISTRICT OF THE REPUBLIC OF BURYATIA

This paper discusses the results of laboratory tests of biochemical indices of blood serum (copper, iron, protein, albumin, urea, glucose, and alkaline reserve) of cattle of Mongolian and Kalmyk breeds with alimentary anemia and hypocuprosis; the paper also discusses the findings of the comparative study of trace element composition (copper, zinc, cobalt, nickel, molybdenum, strontium, iron, and man-ganese) of the soils of the Töv Aimag of Mongolia and the Kyakhtinsky District of the Republic of Buryatia. The disor-ders of mineral metabolism in animals of Mongolian and Kalmyk breeds with clinical signs of alimentary anemia and hypocuprosis was accompanied by the signs of hypocu-premia and hyposideremia, i.e., insufficient content of cop-per and iron in the blood. When studying the causes of trace element deficiency in cattle, the natural geographic features of the deficiency concern areas were considered. It has been found that the endemic foci are common in light-chestnut soils and thin chestnut soils around lakes and stock watering sites in Mongolia and the Kyakhtinsky District of the Republic of Buryatia. As compared to medi-um-thick chestnut soil, light chestnut soil of the Töv Aimag of Mongolia is poor in copper by 21.9%; cobalt -by 32.4%; strontium -by 11.7%; iron –by 19.7%; manganese -by 9.9%; richer in zinc by 32.9%; molybdenum -by 7.7%. The content level differences in the medium-thick chestnut soil as compared to light chestnut soil of the Kyakhtinsky Dis-trict of the Republic of Buryatia are as following: copper -more by 25.0%; cobalt -by 40.3%; nickel -by 11.8%; mo-lybdenum -by 38.7%; strontium -by 16.3%; iron -by 53.8%.