КАЧЕСТВО СПЕРМОПРОДУКЦИИ И ВОСПРОИЗВОДИТЕЛЬНАЯ СПОСОБНОСТЬ БЫКОВ-ПРОИЗВОДИТЕЛЕЙ КРАСНОЙ СТЕПНОЙ ПОРОДЫ ОАО ПЛЕМПРЕДПРИЯТИЕ «БАРНАУЛЬСКОЕ»

The article characterizes 12 red steppe servicing bulls from Barnaulskoe enterprise on the quality of native sperm and conception rate. The authors found out significant differences (7.56 ml) between the bulls in total daily ejaculate. This coefficient varied from 27.5 to 42%; it was 40.6 in the group. Spermatozoids activity varied from 6,96 (Ekran 230 bull) to 7.68 (Izumrud 5460 bull) whereas sometimes it reaches 9.6-15.7%; it was 14.2% in the group. The authors observed differences in the concentration of spermatozoids; they reach 0.49 bill/ml or 65.3 %. Variation coefficient of spermatozoids was 18.0-34.5 %; it was 29.4 % in the group. The conception rate of the first service by the sperm of 5 red-steppe bulls was 35.4-54.5%; total conception rate was 63.9-91.1%. The researchers observed the worst results when used sperm of Ball 1242 bull, the best results was observed when they used Vatikan 3959 bull, Iris 667 and Liker 5750. Assessment of red-steppe servicing bulls on the quality of sperm and reproductive parameters speaks about significant differences among them. This could be explained by hereditary features of the red-steppe bulls taking into account that they were kept in the same conditions.