Analysis of efficiency of reproduction of cows and heifers of Kalmyk breed in meat farms of the Republic of Sakha (Yakutia)

The article provides data on the reproduction of cows and heifers in three farms of the Republic of Sakha (Yakutia), specializing in meat cattle breeding: Integrated agricultural production centre "Soloosun" (Megino-Kangalas district), LLC "Konezavod Berte" (Khangalas district) and Integrated agricultural production centre "Krestyah” (Suntar district). The material for research is the reporting data of farms for 2014-2019. The experience of reproduction of the herd of meat direction was summarized, dynamics of insole and calving was studied. By results of calculation of KIVSK according to  N.M. Kramarenko, a high rate of a uterine livestock was in  LLC "Konezavod Berte" (108.9%), a good indicator by the index of fertility in herds of the meat cattle in Integrated agricultural production centre "Krestyah” (51.2) and Integrated agricultural production centre “Soloosun” (51.0). High coefficient of reproducibility of mother stock was in  LLC "Konezavod Berte" (1.09).