Productivity of lactating cows and milk quality at feeding a Zeo-Amino supplement enriched with a complex of protected L-amino acids

The scientific search for solutions to the urgent problems of modern dairy animal husbandry is currently aimed at finding effective, inexpensive and environmentally friendly dietary supplements that allow the most fully realize the genetic potential of animals, as well as reduce the negative impact of a negative energy balance on the body of cows after calving. One of such additives to the diet of lactating cows can be a feed additive based on natural zeolites enriched with a biocomplex of protected L-amino acids. The paper studies the dynamics of indicators of the average daily milk yield of cows 3-4 lactation, their live weight, metabolism and milk quality when feeding the ZEO-AMINO supplement in the first 100 days of lactation. It was revealed that the daily use of a granular feed additive of 0.2-0.7 mm fraction, starting from the second day after calving, once a day at the rate of 2% of the dry matter of the diet during the first 100 days of lactation, contributes to an increase in the average daily milk yield of cows by an average of 15.9%; by the 7th month of lactation, an increase in the average daily milk yield is established in an average of 18.3%. It has been established that feeding the supplement to cows after calving due to better assimilation of nitrogen in the diet and accumulation of proteins in the animal's body allows partially leveling the negative consequences of a negative energy balance after calving, and contributes to a more intensive recovery of live weight loss, which is reliably confirmed by animal productivity indicators.