Influence of pre- and postnatal impact of the feed additive «Tanamin Zn» on mineral metabolism and growth intensity of calves of the dairy period

The influence of prenatal (feeding to dry cows) and postnatal (feeding to dairy calves) impact of the feed additive «Tanamin Zn» on mineral metabolism and growth rate of calves in early ontogenesis was studied. A positive effect of the additive on the intensity of growth was established, regardless of the method of exposure to tanamine on the animal organism. Analysis of the concentration of calcium, phosphorus, magnesium, potassium and chlorine in the blood of calves after prenatal exposure showed a significant difference with the control of phosphorus and magnesium at 15 days of age. By day 30, these differences leveled out. When studying the dynamics of calcium, phosphorus, magnesium and zinc in the blood of calves who received the supplement from birth to 60 days of age, a significantly higher concentration of phosphorus and zinc at 30 days of age and magnesium at 60 days of age was shown. During the aftereffect period (90 days), these differences were established for phosphorus.