DOI: 10.26155 / VET.ZOO.BIO.201904009
UDC 636.084.415
Authors
I.V. MASLENNIKOV, S.V. ZAKIROVA, E.V. PANKOV
UDMURT FEDERAL RESEARCH CENTER URO RAS
Abstract
The article presents data on the use of biologically active food additives for cattle. The experiment involved dairy cows of a Holstein black-motley breed of different periods of lactation under conditions of tethered keeping. As a result of feeding the studied additives in the experimental group, an increase in milk yield by 4,3 liters was noted. The protein and fat content in the milk of the studied animals increased by 0,1%. According to the results of blood tests, an increase in the carotene content in the experimental group by 20% was noted in comparison with the control. In the experimental group, a decrease in the content of excess phosphorus was observed, which brought the calcium-phosphorus ratio closer to normal, while in the control group the phosphorus content increased. The alkaline reserve in the experimental group increased by 7,4%, and in the control group - decreased by 5,9%. The reaction of the rumen environment (pH) when the studied additive was included in the diet in the experimental group of cows acquired normal values (6,8).
Keywords
metabolic diseases, functional feeding, biochemical blood parameters, calcium-phosphorus ratio.
