Evaluation of the exterior of the first-calf Ukrainian Black-and-White dairy breed by the linear classification method depending on the origin of the father

  • A. P. Zaets Candidate of Agricultural Sciences
  • J. W. Stoliar Candidate of Agricultural Sciences
  • M. O. Mandryk
  • O. V. Bihas Institute of Feed and Agriculture of Podillya NAAS
Keywords: Ukrainian Black-and-White dairy breed, first-calf cows, lines, pedigree bulls, exteriors, linear classification, consolidation, correlation

Abstract

In terms of the breeding farms of Vinnytsia region «Zelena Dolyna LLC» of «Vyly», village Vyly, Tomashpil district and «Radivske LLC», village Radivka, Kalynivka district, milk production and signs of the exterior of first-calf cows of the Ukrainian black-and-white dairy breed were evaluated, and the degree of consolidation and variability was established. Thus, according to the complex of traits of the exterior characterizing the dairy type, body, limbs and udder of the first-calf cow there was received 82.1 ± 0.18; 84.90 ± 0.14; 78.50 ± 0.13 and 84.0 ± 0.13 points. By the overall linear assessment of the exterior (Kc = 0.303–0.280) and milk productivity (Kc = 0.415–0.188), daughters of Otto bulls 00135556252 (Marshal Line 2290977.95) and Sarukko 95813 (Mtoto Line) appeared to be the most consolidated. Analysis of the phenotypic variability of complex and descriptive traits of the type showed that the following traits of the exterior had high variability: posture of the pelvic extremities, hooves angle, posterior attachment of the udder, placement of the front and rear dugs (Сv = 15.1; 15.2; 12.9; 17.5; 18.9). A positive average correlation (r = 0.24–0.25) was established between the relative variability of signs of milk production and the overall assessment of the exterior. A negative correlation (r = -0.01) between a 305-day yield of lactation and fat content and a weak position correlation (r = 0.13) with protein content.

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How to Cite
Zaets, A. P., Stoliar, J. W., Mandryk, M. O., & Bihas, O. V. (1). Evaluation of the exterior of the first-calf Ukrainian Black-and-White dairy breed by the linear classification method depending on the origin of the father. Feeds and Feed Production, (86), 161-167. Retrieved from https://fri-journal.com/index.php/journal/article/view/129