The associativity of the level of heavy metals with the number of leukocytes in the organism of cows

The conjugation of metal and leukocyte concentrations in the blood of cows in the conditions of technogenic province was studied. The object of the study were cows of black-and-white breed at the age of 3 (after the 1st calving), 4-5 (after the 2nd calving) and 5-6 years (after the 3rd calving). It was found that the concentration of copper, manganese, lead and cadmium increases in the blood of cows with growth. In or the organism of 5-6-year-old animals the levels of metals exceed the average rate of effective value in of 27.00; 106,66; and 28,00 72,00%, respectively. With the increase in the blood of cows, the total number of leukocytes increases by 42.23%; in the leukogram, the percentage of eosi-nofils (by 29.13%) and neutrophils (5.71%) increases and exceeds the norm limits against the background of lymphocytic decrease as a result of adaptation to the conditions of technogenic modified habitat. The level of heavy metals in the blood is associated with the number of leukocytes, which is confirmed by statistically significant correlations between segmental neutrophils and cadmium (r=0.71-0.87), Mar-Ganz (r=-0.66 - -0.73), copper (r=0.72--0.81) and zinc (r=0.74 - -0.86); lymphocytes and iron (r=0.76 - 0.82), cadmium (r=-0.72 - 0.86), manganese (r=0.75 - -0.87), copper (r=0.85 - -0.92), lead (r=0.69 - 0.83).