Hematological Indicators of Calves in the Prevention of Hypoelementosis in the Amur Region

Abstract

Hematological studies were conducted in calves in dynamics during the prophylaxis of hypo-elementosis in the Amur region. The object of the study was calves (breed-Holstein, age-up to two months). The selected animals were divided into two equivalent groups: control and experimental. In the control group, planned measures were taken to prevent hypo - elementosis; in the experimental group, complex injectable drugs were used: Se-containing and tissue. Laboratory tests of calves ‘ blood were performed at the beginning and end of the experiment with determining the number of red blood cells, white blood cells, hemoglobin level, calculating the color index, differential counting of white blood cells and calculating the color index. It was established that the quality of blood oxygenation in calves of the experimental group improved. This is confirmed by the regeration to the standard values of hemoglobin level and color index as a result of their growth by 28 and 17%, respectively. At the end of the experimental period, the percentage of conditionally healthy calves was 80 % in the experimental group and 40 % in the control group. Thus, it should be noted that the proposed scheme of complex application of Se-containing and tissue preparations contributed to the normalization of erythropoiesis processes and increased the resistance of calves to diseases by 40 %.