Influence of economic use duration on milk yield with intensive heifer milking

Abstract

In the study the influence of milking intensity of first heifers on milk productivity of cows of black-spring breed on the example of dairy farm in Chui valley was studied. A sample of 100 first-calf Holstein heifers was formed, which were given different amounts of feeding and milking in the first lactation. The results showed that cows with milk yields between 3001 and 4000 kg of milk in the first lactation had the best milk yield and length of utilization. The study emphasizes the importance of optimal management of milking and feeding to improve production efficiency in dairy cattle breeding.