The work was performed on the farms of Krasnoyarsk Territory. The object of the study were cows of red-motley, black-motley, Simmental breeds, as well as Yenisei and Krasnoyarsk types. The goal was to consider the prospects for the development of dairy cattle breeding in Krasnoyarsk Territory. The tasks were to evaluate cows of red-motley, Yenisei type, black-and-white Krasnoyarsk type and Simmen- tal breeds according to milk productivity indicators; identify the main reasons for the retirement of cows in the province. The analysis showed that milk yield on the farms increased by 9 %, for breeding plants and breeding dynamics by 6 %. The mass fraction of fat increased on the farms of the region by0.01 %, by breeding reproducers by 0.05 % and by breeding plants by 0.04 %. The highest milk yield for 305 days for 1, 2 and 3 lactations was observed in the cows of Krasnoyarsk black and motley breed and amounted to 6.398 kg (P> 0.999), 7185 kg (P> 0.999), 7359 kg (P> 0.999), respec-tively. According to the mass fraction of fat, the cows of the Yenisei type of red-mottled breed had the advantage of the first and the second lactations, Simmental breed according to the third lactation. The highest mass fraction of protein in all three lactations was in Simmental breed cows and was 3.2-3.37 % (P> 0.999). The main causes of decay of cows of dairy breeds were gynecological diseases up to 34.6 %, ud- der diseases - 15.8 %, limb disease - up to 15.4 %. Often because of gynecological diseases cows of red-motley breed of Yenisei type was 32.5 % and black-motley breed - 39.8 % drop out. The age of Simmental cows retirement was from 3.8 to 4.2 years.
milk productivity, breed, lactation, culling, se- lection
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