Changing the bioelectric potential of biologically active centers of stud bulls with different quality of sperm production

As a working hypothesis of the research, it was suggested that the superficially localized biologically active centers (SLBAC) of stud bulls are closely associated with the functioning of the reproductive system and the level of bioelectric SLBAC can be used for the assessment and prediction of the reproductive ability of animals. The results of experiments on the measurement of the bioelectric potential of SLBAC in bulls with different: volume of ejaculate, number of semen doses in the ejaculate, concentrations of gametes, mobility, survival and fertilizing ability of gametes are presented. In the study of seed cryoresistance, i.e., its ability to establish functional integrity after freezing to liquid nitrogen temperature (-196°C) and thawing, we established a directly proportional relationship between the physiological indices of deconstructed gametes and the level of bioelectric potential of surface-localized biologically active centers (LBPSLBAC) of experienced manufacturing bulls. The increase in motility of frozen-thawed gametes in the third group by 11% and survival by 4.5% on average was accompanied by an increase in the average LBPSLBAC by 2%, relative to the control. It was established that with an increase in the fertility rate of cows from the first insemination by 20% in the third group, the average LBPSLBAC was correspondingly higher by 2% relative to the control. As a result of the research, a direct relationship has been revealed between the level of bioelectric potential of surface localized biologically active centers and the qualitative indicators of the seed of manufacturing bulls and the fertility of cows from first insemination. The established dependence will allow studying reproductive qualities according to the electrophysiological assessment of the state of the organism of stud bulls.