SOME METABOLIC PARAMETERS IN IN DAIRY COWS DURING THE PERIOD CLOSE TO CALVING UNDER ACETONEMIA

Abstract

The active development and intensification of animal husbandry, with technological errors (abnormal operation, unbalanced diets, keeping conditions, and others), increases the risk of the occurrence of a variety of metabolic diseases (ketosis, osteodystrophy, hepatosis). The study aimed to investigate the metabolic changes in dairy cows during the “close to calving” period of acetonemia. The authors researched cows of black-motley breed based on the joint-stock company of educational and experimental farm “Prigorodnoye”, Barnaul. The research was carried out four times: 2 and 1 month before calving, and 10 days and 1 month after calving. During the study, clinical and biochemical examination of the selected animals was carried out. The authors found that in ketosis cows have increased respiratory rate and heart rate. The authors also noted signs of osteodystrophy and rumen hypotonia. In cows with ketosis, the level of total calcium was below the physiological limits during the whole study. The authors observed an increase in total calcium concentration one month and ten days after calving, after which this concentration decreased. Inorganic phosphorus concentrations decreased one month before calving and increased sharply after calving. Hypoglycemia and acidosis were also noted by the authors. Acetone bodies decreased by calving and increased after calving. Triglyceride levels increased before calving and exceeded physiological values one month before calving. After calving, triglyceride concentration decreased sharply. The concentration of cholesterol in the blood of cows rose during the whole period of the study and its level was within the physiological norm.