Biochemical parameters of the blood of dry cows with myocardiodistrophy
Studies were conducted on 2 groups of highly productive dry cows of the Kostroma breed: clinically healthy and with symptoms of myocardiodystrophy. The blood serum studied the content of glucose, total protein, total cholesterol, total calcium, inorganic phosphorus, magnesium, potassium, the activity of enzymes CPK, LDG, ALT and AST. Indicators of total protein, total cholesterol, inorganic phosphorus, potassium and the catalytic activity of ALT were determined within the standard values for all pregnant cows. There was a decrease in AST activity, an increase in CPK activity, hypocalcemia, and hypermagnemia in dry cows of the Kostroma breed. In sick cows, these changes were more pronounced, and symptoms of carbohydrate metabolism disturbances - hypoglycemia and increased LDG activity, were revealed, indicating the hard work of the heart and metabolic disturbances in the myocardium of highly productive cows in the later stages of gestation.