@article{Khmelnychyi_Vechorka_Khmelnychyi_2018, title={FEATURES OF THE CONFORMATION TYPE OF DAIRY CATTLE OF DIFFERENT ORIGIN AND CORRELATIVE VARIABILITY OF LINEAR TYPE TRAITS WITH MILK YIELD COWS OF HOLSTEIN BREED}, volume={56}, url={https://abg-journal.com/index.php/journal/article/view/202}, DOI={10.31073/abg.56.10}, abstractNote={<p>Researches were carried out on estimation cows of Ukrainian Black-and-White dairy and Holstein breeds by the method of linear classification in the herd of pedigree farm LLC "Vladana" in Sumy region.</p> <p>When comparing cows of Ukrainian Black-and-White dairy with Holstein, the improving influence sires of Holstein breed on the development of conformation of cows in the herd according to indicators of the linear assessment by 100-point system was found. The difference was based on the group traits of dairy type 1,1 score, legs – 1,3, udder – 1,6 and final score – 1,2. In all comparisons, the difference was highly reliable at P&nbsp;&lt;&nbsp;0.001.</p> <p>By descriptive traits improvement with a significant difference were observed in height (by 0,3 scores; P&nbsp;&lt;&nbsp;0,05), body depth (by 0,3 scores; P&nbsp;&lt;&nbsp;0,05), rump width (by 0,6 scores; P&nbsp;&lt;&nbsp;0,001), angle of pelvic limbs (by 0,4 scores, P&nbsp;&lt;&nbsp;0,001), foot angle (by 0,9 scores, P&nbsp;&lt;&nbsp;0,001), front udder attachment (by 0,4 scores, P&nbsp;&lt;&nbsp;0,001), central ligament (by 0,8 scores; P&nbsp;&lt;&nbsp;0,001), udder depth (by 0,9 scores; P&nbsp;&lt;&nbsp;0,001) and teats length (by 0,3 scores; P&nbsp;&lt;&nbsp;0.01).</p> <p>Animals of Holstein breed compared to Ukrainian Black-and-White dairy became more narrow-chested (by 0,7 scores; P&nbsp;&lt;&nbsp;0,001).</p> <p>The identified relationships between linear traits and value of milk yield of first-born cows in the controlled herd were determined the existence of a reliable correlation between estimation both for individual complexes of conformation traits and overall assessment by 100-point classification system (r&nbsp;=&nbsp;0,198–0,464; P&nbsp;&lt;&nbsp;0,001).</p> <p>Positive and reliable correlation with milk yield was observed by a number of descriptive traits: height (r&nbsp;=&nbsp;0,359), body depth (r&nbsp;=&nbsp;0,384), angularity (r&nbsp;=&nbsp;0,474), rump width (r&nbsp;=&nbsp;0,311), posture of pelvic limbs (r&nbsp;=&nbsp;0,361), foot angle (r&nbsp;=&nbsp;0,273), front (r&nbsp;=&nbsp;0,355) and rear udder attachment (r&nbsp;=&nbsp;0,330), central ligament (r&nbsp;=&nbsp;0,311), locomotion (r&nbsp;=&nbsp;0,305). Body condition score was correlated negatively (r&nbsp;=&nbsp;-0,168).</p> <p>Thus, the determined correlations between linear traits of the conformation and milk yield for lactation have been indicated the reliability of selection of cows by conformation type, simultaneously improving milk production.</p> <p>The using sires of Holstein breed during absorbed crossing with Ukrainian Black-and-White dairy breed have been improved linear traits of the conformation type in their offspring.</p> <p>Positive relationship between group and main descriptive linear traits characterizing conformation, and value of milk yield would be facilitated by efficient indirect selection based on the type and productivity.</p&gt;}, journal={Animal Breeding and Genetics}, author={Khmelnychyi, L. M. and Vechorka, V. V. and Khmelnychyi, S. L.}, year={2018}, month={Dec.}, pages={77-83} }