THE EFFECT OF PROTEIN CONTENT IN THE DIET OF KAZAKH WHITE-HEADED BULLS ON THEIR GROWTH AND DEVELOPMENT

Abstract

Crude protein (CP) is crucial for stimulating rumen fermentation and nutrient absorption. Adding protein to a low-quality coarse diet can improve the use of coarse feed and productivity of cattle. Purebred bulls of the Kazakh white-headed breed in the amount of 21 heads of 8 months of age were selected for the experiment. By the end of the test, the bulls were about 12 months old. These studies were conducted to study the effect of protein levels in the diet on the growth and development of Kazakh white headed bulls. During the study, it was revealed that group 2 with a protein content of 15% in the diet consumed 5.77 kg of dry matter, while groups 1 and 3 consumed 7.39 and 6.63 kg of dry matter, which is higher by 1.62 and 0.86 kg. As for the consumption of dry matter, the average daily gain in group 2 (1.14 kg) it was 0.34 kg higher in group 1 and slightly less than group 3 - 0.12 kg .