THE MECHANISM OF ENDOCRINE REGULATION OF THE SEXUAL CYCLE AND THE NORMALIZATION OF REPRODUCTIVE FUNCTION IN THE HOLSTEIN HEIFERS
In a large dairy company in the Ryazan region, studies of the mechanism of endocrine regulation of the estrial cycle were carried out, as well as ways of normalization of reproductive function were studied. Experimental data were obtained on the heifers of the Holstein breed of the same age. In a comparative aspect, the economic efficiency of the methods used is assessed. The drugs and methods used differed qualitatively from each other. For the first time, the combined use ofPGF Wakes Forte and Sedimin drugs has been proven to increase the probability of pregnancy in heifers of the same age by an average of 30 %.