@article{Khmelnychyi_Karpenko_2021, title={THE ROLE OF BULL-SIRES EVALUATED BY THE TYPE OF THEIR DAUGHTERS IN THE FORMATION OF BREEDING HERD FOR THE CONFORMATION AND MILK PRODUCTIVITY}, url={https://www.snaubulletin.com.ua/index.php/ls/article/view/431}, DOI={10.32845/bsnau.lvst.2021.3.4}, abstractNote={<p>By using the method of linear classification, breeding sires were evaluated by the type of their daughters in the herd of enter-prise of the company "Ukrlandfarming" PE "Burynske" Pidlisnivskyi branch in Sumy region for breeding Ukrainian Black-and-White dairy breed. Differentiation of the offspring according to daughter’s assessment by 100-score scale showed significant variability, which depended on their origin. The daughters obtained from Holstein sires were better in terms of estimation in comparison with their peers, whose parents were bull-sires of the created aboriginal Ukrainian Black-and-White dairy breed. In general, according to the generally accepted international scale, assessment indicators of all evaluated groups of sires daughters, regardless of breed, corresponded to the class "good with plus" (80-84 scores). Daughters of bull-sires of the Holstein breed, which were characterized by the best development of the dairy type group traits (82.9-84.3 scores), body (83.2-84.6 scores), limbs (82.8-83.5 scores), udder (83.7-84.5 scores) and the final score for the conformation type (83.7-84.2 scores), similarly differed by higher milk yield of the first (6782-7244 kg) and full-age (8645 - 8931 kg) lactation. The correlation was established between the milk yield per lactation and the group of conformation traits of daughters assessed by the type of sires, thatch characterize the severity of dairy type (r = 0.215-0.478), body (r = 0.286-0.484) and limbs development (r = 0.122-0.422), morphological udder qualities (r = 0.264-0.461) and from the final score of type (r = 0.231-0.468) with a reliability of P &lt;0.05-0.001. Results of estimation the daughters of the herd bull-sires by descriptive body parts of the conformation showed a significant variability by the assessed traits, which varied within 3.2-7.5 scores with variability in the coefficients of variation within 11.2-33.8% and indicated about the need for their improvement.</p&gt;}, number={3 (46)}, journal={Bulletin of Sumy National Agrarian University. The series: Livestock}, author={KhmelnychyiLeontiі Mykhailovych and Karpenko, Bogdan Mykolaiovych}, year={2021}, month={Oct.}, pages={19-27} }