The effectiveness of the new feed additives for growing heifers beef cattle

Researches have concluded that the schemes developed by feeding use of probiotic feed additives in diets of replacement heifers with meat direction of productivity include a new domestic feed additive of “Baksin–KD” that allows improving the physiological development of animals expressed in increased growth energy due to better feed conversion. The results of blood and intestinal microflora studies in heifers during the suckling period of rearing have confirmed the positive effect on the physiological state of animals. Feed additives of “Atsibif” and “Baksin–KD” as a part of the diet in the suckling period had an appositive impact on growth and development of replacement heifers during the technological period of rearing that has reduced their middle age at the 1st insemination in experimental groups from 32 till 44 days. The difference on insemination index between the control and the 2nd and 3rd experimental groups has made 0.14 and 0.27, respectively, in favor of the latter. Economic efficiency calculation allows us to optimize their technological rearing scheme in order to reduce the suckling and rearing periods of replacement heifers rearing profitability level in the control group has made 3,5%. It is below the given indicator from the second group on 7,4% and on 9,4% in comparison with the third test group of animals. On in addition invested ruble 3,46 and 14,3 rubles according to the second and the third test, groups have been received