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Information × Registration Number 0225U002678, (0120U101091) , R & D reports Title Research of economically useful traits of Simmental cows in organic and conventional dairy production in terms of Ukrainian Polissia popup.stage_title Дослідити тривалість господарського використання корів симентальської породи за органічного та конвенційного виробництва молока та встановити причини вибуття корів зі стада Head Kucher Dmytro M., Кандидат сільськогосподарських наук Registration Date 27-03-2025 Organization Polissya National University popup.description1 The purpose of the research is compare the economically useful traits of Simmental cows of organic and conventional herds, work out a further selection strategy for Simmental breed in organic production popup.description2  The research is carried out using the following methods: zootechnical (live weight, animal measurements, body structure indices, reproductive ability, milk production, measurements and functional properties of the udder); population and udder, productive longevity of cows); population genetic (dependence of of cows' productivity on the productivity of their mothers, mothers of mothers, mothers of fathers); economic (economic efficiency of cow breeding depending on economic (economic efficiency of breeding cows depending on various factors); mathematical and statistical (comparison of group averages, the difference between them and their errors, correlation coefficients, reliability of the results of research results). Our results indicate the feasibility of using the selection of of animals according to the Teinber selection index in both organic and and conventional milk production, since the indicators of milk production of animals of different groups differ significantly. The strength of the influence of the value of the breeding index in the herd of Myroslavel-Agro LLC on milk yield for 305 days of cow lactation amounted to 67%, milk fat - 88%, milk protein - 77%, total production fat and protein - 86%, in the herd of PE “Galeks-Agro” - 71%, 87, 74 and 84%, respectively (P < 0,001). First-born cows in organic milk production have worse reproduction parameters compared to conventional milk production, which is due to the prohibition of the use of artificial vitamins, hormonal veterinary drugs to stimulate lust and reduce the duration of biological reproduction periods. Product Description popup.authors Kochuk-Yashchenko Oleksandr A. popup.nrat_date 2025-03-27 Close