| Abstrakt: |
The article presents the results on the effect of the preparation Azoxivet on the body of young black-and-white cattle in the conditions of the commercial economy of the Kemerovo region in 2019-2020. When using the preparation, there is a positive effect on the formation of immune defense and resistance of the body of calves. A significantly higher content of eosinophils at the age of 60 days was revealed in the control group of calves compared to the experimental group. The content of eosinophils in the control group was 1.8±0.1%, and in the experimental group 1.3±0.1%, the difference was 27.8% (p <0.01). In the control group of the studied livestock at 10 days and 60 days of age, there was not a significant increase in leukocytes, and the difference between the experimental and control groups was 1.5% and 4.1%, respectively. In comparison with the control group of young cattle at the age of 10 days, in the experimental group, an insignificant increase in the content in blood samples was determined: erythrocytes - 1.0%; hemoglobin - 3.1%; lysozyme - 6.1%; bactericidal activity of serum - 9.2% and phagocytic activity of blood serum - 2.6%. At the age of 60 days, in the experimental group, an insignificant increase in the content in blood samples was also revealed: erythrocytes - 16.9%; hemoglobin 9.2%; lysozyme - 20.4%; bactericidal activity of serum - 9.8% and phagocytic activity of blood serum - 4.9%. At the age of 60 days in the control group of calves, compared with the experimental group, an insignificant increase in the content of basophils by 33.3% and monocytes by 16.7% was revealed. The content of young and stab neutrophils at the age of 60 days in the experimental group insignificantly exceeded those in the control group by 27.9% and 10.2%, respectively. Formation of strong immunity and resistance of the organisms of the calves of the experimental group may have influenced the growth rate of the experimental livestock. Young animals from the experimental group over the period of the experiment slightly surpassed their peers from the control group in absolute gain in live weight by 2.0 kg or 6.06%, relative gain by 8.3% and average daily gain in live weight by 33.33 g or 6.06%. During the study period, gastrointestinal diseases of calves with diarrhea symptoms were observed in the control group 2 times more often than in the experimental group. [ABSTRACT FROM AUTHOR] |
