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Information × Registration Number 0221U101765, 0119U002094 , R & D reports Title To assess the adaptive capacity of Dairy Cattle, taking into account the influence of genetic and paratipical factors under the conditions of the Ukrainian Steppe popup.stage_title Head Pysarenko Andrii V, Кандидат сільськогосподарських наук Registration Date 25-01-2021 Organization MF Ivanov Askania-Nova Institute of Steppe Animal Husbandry - National Scientific Breeding and Genetics Center for Sheep Breeding popup.description2  The object of research is the Dairy Cattle adaptive capacity peculiarities under the influence of various factors. The aim of this work is to assess the Dairy Cattle adaptive capacity taking into account the genetic and paratypical factors influence. Research methods: zootechnical, selection and genetic, biometric, retrospective analysis. The live weight of replacement heifers, with an increase in the conditional blood count for the Holstein breed, increases from 0.4 to 78.3 kg (p <0.05; p <0.001). In cows with conditional blood in the Holstein breed, 100% advantage in dairy yield is up to 1211 kg (p <0.001), in milk fat yield up to 64.4 kg (p <0.001). At the same time, there is a deterioration in the indicators of reproductive ability. Thus, the duration of the service period increases to 58.8 days (p <0.05), the intercalving period - up to 56.1 days (p <0.05), the calf yield decreases to 11.4%, the reproductive capacity coefficient - to 0.098 (p <0.05). The parental pairs combinations of different variants influence on the animals economically useful traits was studied (daughters of bull Manteno 22859 and mothers from Laturi 392585 had a higher dairy yield than their peers, dairy yield - by 662-2702 kg (p <0.001) and milk fat yield - by 16, 2-127.6 kg (p <0.001). The optimal parameters of the reproductive capacity of cows were determined depending on paratypical and genetic factors (the duration of the service and intercalving periods was 97.5 and 376.3 days, respectively, the coefficient of reproductive capacity was 0.984) The impact strength of the year and the birth season on the live weight of Ukrainian Black-Mottled Dairy breed replacement heifers in different age periods is = 0.013-0.326. Heifers that were born in the fall had a higher live weight before 12 months of age - by 1.1- 46, 1 kg (p <0.001). At 18 months, animals born in summer had a large live weight - by 0.8-9.7 kg (p <0.05). The difference between the best and worst dairy yield in animals’ ti Product Description popup.authors Buiuklu Mykola I Dudok Aliona R Pysarenko Andrii V Samsonenko Dmytro O Suchkov Ivan A popup.nrat_date 2021-01-25 Close