Complex application of vitamin and mineral premixes in the diet of cows during the prenatal and postpartum periods

The influence of consistent systemic use of «Cowfit dry Complete», «Cowfit dry plus», «Cowstart» vitamin and mineral complexes in the feeding of highly productive cows before and after calving on the indicators of milk productivity, morbidity and homeostasis has been studied. The object of the research was cows with an average annual milk yield of 8-9 thousand kg of milk for 305 days of lactation The consistent use of premixes contributed to a decrease in the incidence of pathologies following calving: endometritis and hypotension of the scar by 2 times, pathologies of the distal part of the limbs by 1.92 times, subclinical mastitis by 1.5 times. In the cows of the experimental group, the protein content in the blood became significantly higher by 15.4% during the period of the experiment; globulins - by 30.4%, calcium - by 13.3%, phosphorus - by 25.2%; magnesium - by 26.7%, potassium - by 26.3% compared to the control group (p