Investigation of reproduction and selection potential of Holstein breeding cattle in Kyrgyzstan

In this article, statistical results of selection characteristics and milk yields, live weight and reproduction characteristics of Holstein sheep breeds grown in Kyrgyzstan conditions are given according to their origins and ages. Parameters were calculated for milk yield and growth characteristics. For this purpose milk productivity, lactation and live weights of cattle were measured. Holstein cows were crossed with local races to improve productivity during milk productivity and lactation. As a result, there are significant variations in some yields in the animals raised. According to the results obtained, the live weights of Holstein cows raised in Kyrgyzstan were 505.4 kg, the first lactation milk yield was 4641.9 kg, the second lactation was 5082.4 kg and the third lactation was 5127.1 kg. In the same order, service period lengths were obtained as 119.2, 101.5 and 96.4 days. The coefficient of variation for the lactation yields was calculated as 6.04?% for live weights and 13.13, 14.78 and 17.47 for lactation milk yield, respectively. This coefficient was 38.82?%, 40.10?% and 54.41?% in terms of reproductive characteristics, respectively. It can be understood from these figures that it is understood that there is possibility to make progress by making selection in this herd. The results are presented in tabular form. Since Kyrgyzstan is a mountainous country, native animal breeds have also been adapted to these conditions. Local animal breeds have also been selected and raised by native scientists. Local races are grazed in the mountains and for this reason they have become adherent to harsh weather conditions. As a result of this article, it was determined that there is a significant variation in terms of breeding and milk yield characteristics and this is the result that can be evaluated in Holstein breeding in Kyrgyzstan.