REPRODUCTIVE ABILITY AND MILK PRODUCTION OF COWS IN CONNECTION WITH THE USE OF CEREAL FODDER FROM DIFFERENT CROPS

The article presents the results of studies of milk productivity and reproductive capacity of Ukrainian Black-and-White dairy cows when replacing vetch-oat mixture with winter triticale in their diets. Cows of the control group received a diet containing the same amount (in terms of nutritional value) of corn silage and vetch-oat silage. In the diets of the animals of the experimental group, 100% of this grain silage was replaced by winter triticale. It was found that the harvesting of winter triticale and vetch-oat mixture made it possible to obtain feed containing 34.1 and 36.1 g of crude proteins, exceeding corn silage by this indicator by 13.9 and 15.9 g, respectively, or by 68.8% and 78.7%. At the same time, the content of non-degradable protein in triticale grain silage was higher than that of vetch-oat mixture and corn silage by 36.8% and 147.9%, respectively. It was found that the replacement of vetch-oat silage with winter triticale silage in the feed mixture, with a slight decrease in the content of crude protein and crude fiber, increases the content of protein incapable of splitting by 32 g, starch by 69 g, sugar by 50 g and fat by 19 g. During the period of the experiment, 3759 kg of milk with a fat content of 3.73% and protein content of 2.86% and 3748 kg with a fat content of 3.70% and 2.97% were obtained from animals of the control and experimental groups (on average per head). According to the main indicators of reproductive capacity in the experimental cows, the difference was insignificant and statistical significance was not proven. The difference in the duration of the service period, lactation period and inter-calving period between the groups was 8.4, 19.9 and 12.0 days in favor of the experimental group.