The Role of Premixes in Increasing Milk Productivity of Black-And-White Dairy Cows

This study investigates the role of vitamin–mineral premixes in improving milk productivity of high-yielding Black-and-White dairy cows under farm conditions. The research focuses on the physiological importance of essential vitamins and trace elements in regulating metabolic processes, reproductive performance, and milk production. Experimental observations were conducted on cows receiving balanced premix supplementation containing macro- and microelements such as copper, cobalt, manganese, zinc, iodine, as well as vitamins A, D, E, K, C, and B-group vitamins. The results indicate that premix supplementation contributes to an increase in milk yield, stabilization of reproductive function, reduction of the service period, and a decrease in obstetric and gynecological disorders. Improved mineral and vitamin balance positively affected feed utilization efficiency and overall health status of the animals. The findings confirm that the use of scientifically grounded premix formulations is an effective nutritional strategy for enhancing milk productivity and reproductive efficiency of Black-and-White cows in intensive dairy farming systems.