The influence of sporogenous probiotics on the sperm production quality, digestibility of nutrients and growth indicators of the breeding bulls

The purpose of the research was to study probiotics "Olin" and "Biosporin" in the diets of stud bulls of Black-and-White breed. The research objectives included: studying the quality of sperm production of stud bulls, digestibility of nutrients in their diet and growth indicators. The objects of the study were stud bulls at the age of 18 months. The experiment was formed by one control and two experimental groups of 6 animals. In accordance with the dosages recommended by the manufacturers, the bulls of the experimental group received probiotics "Olin" and "Biosporin" for 40 days. The scientific experiment showed that by feeding the bulls with probiotics the average volume of ejaculate, sperm concentration, its mobility and density corresponded to the optimal indicators. In animals of the experimental groups treated with probiotics, there was an increase in sexual activity by 17% (P