Abstract
The article deals with the activity of blood enzymes of lactating cows of the Ukrainian red dairy breed in the period of 2-4 lactations, depending on the indicators of volume-weight coefficient and the number of lactations. It was established that сows with a higher volume-weight ratio also had the highest rate of the enzyme aspartate aminotransferase. With an increase in the volume-weight ratio to 0.573 in cows of the fourth lactation, the activity of all the studied enzymes (AST, ALT, GGT, LDT) with the highest indicator (64.1%) of the enzyme LDT and the lowest (3.7%) in ALT enzyme increases.
Keywords:
enzymes of blood, cow, lactation, volume-weight coefficient, activity of blood.