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Information × Registration Number 0223U005611, 0121U100427 , R & D reports Title Investigation of the peculiarities of the formation of productive and adaptive traits in animals of the Podolsk factory type of the Ukrainian black-spotted dairy breed at purebred breeding and crossing taking into account climate change popup.stage_title Head Verbych Ivan V., Registration Date 25-12-2023 Organization Khmelnytsky State Agricultural Research Station of the Institute of Feed and Agriculture of Podillya NAASU popup.description2 The peculiarities of formation and realization of breeding traits of the Ukrainian Black-and-White dairy breed under the influence of genetic and paratypic factors in the conditions of climate change were investigated. It was found that purebred cows of Ukrainian Black-and-White dairy breed for 305 days of the first three lactations had higher milk yields compared to their crossbred counterparts obtained by crossbreeding Ukrainian Black-and-White dairy cattle with bulls of Brown Swiss breed. The difference in their favor, in terms of lactations, ranged from 93.8 kg to 146.6 kg of milk. At the same time, crossbred cows outperformed purebred animals in terms of fat content in milk by 0.19% to 0.26% and protein by 0.14% to 0.19%. In general, the advantage on the side of crossbred animals in terms of total milk fat yield was 3.0-9.5 kg and total protein by 2.6-6.4 kg. When studying the effect of elevated temperature regimes on milk production and milk quality indicators of cows of different genotypes, it was found that the most negative effect on milk yield, fat and protein content in milk is the temperature regime of 32-37 ºС. Compared to the thermoneutral temperature of 18-23 °C, purebred animals reduced milk yield by 10.4%, fat by 0.15% and protein by 0.06%. In crossbred animals, the decrease in milk yield during the period of temperature load was 7.1%, fat and protein, respectively, 0.07% and 0.04%. The analysis of cow milk production under different types of feeding showed that the use of the same type of feeding provides an increase in milk yield by 533 kg of milk, fat content by 0.14% and 0.01% of protein compared to traditional technology. At the same time, when using the same type of feeding, the service period of animals increases by 14 days and the inter-hotel period by 15 days compared to the traditional feeding technology. Product Description popup.authors Medvid Oleksandr V. popup.nrat_date 2023-12-25 Close