Improvement of reproductive function of cows by means of "PKK 60-Z Get" premix

The aim of the research was to study the possibility of improving the reproductive function of cows by introducing the premix "PKK 60-Z get" into the diet. The studies were carried out in the production conditions of LLC "Druzhba", Zheleznogorsk District, Kursk Region. Clinically healthy lactating cows in the second month of lactation, without gynecological diseases, were selected for the scientific and economic experiment: by age - 3 lactation, body weight - on average 620 kg origin - red-motley cattle, the level of milk productivity (on average 20 kg of milk per day with a fat content of 3.8%), the calving interval is 380 ± 3 days, the service period is 100 days. During the research, it was found out that the use of the premix "PKK 60-Z get" for 160 g per head per day before rewarding insemination reduces the service period by 4.67 days, for 220 g per head per day - by 11.67 days. When the premix "PKK 60-Z get" is added to the main diet, the percentage of fertilization from the first insemination increases by 17%. Premix "PKK 60-Z get" allows reducing the insemination index in cows by 0.3. The effectiveness of using premix "PKK 60-Z get" to improve the reproductive ability of cows in the amount of 160 g per head per day in 6 weeks after the calving until the rewarding insemination was 427.02 rubles per 1 cow, in the amount of 220 g per head per day in 6 weeks after the calving until the rewarding insemination it was 1471.3 rubles per 1 cow.