The genetic evaluation and genetic parameters estimation for conformation traits od Holstein cattle
NĚMCOVÁ, E., ŠTÍPKOVÁ, M. & ZAVADILOVÁ, L.. Odhad plemenné hodnoty a genetických parametrů znaků zevnějšku holštýnského skotu. Metodika, Praha Uhříněves: Výzkumný ústav živočišné výroby, v.v.i., 2009, 14 s. 978-80-7403-046-8
Year | 2009 |
Cathegory | Methodologies and software |
No. of pages | 14 |
Download | 9165 |
Internal link | 9165.pdf |
Abstract | The methodology of the genetic evaluation for conformation traits of Holstein cattle was proposed. Breeding values are evaluated separately for twenty traits of the linear type classification scheme of Czech Holstein cattle, including new incorporated three traits: body condition score (BCS), hock quality, locomotion. Linear animal model (BLUP method) is applied. The model includes fixed effects of herd-date of classification-classifier, classifier, and season of calving, linear and quadratic regressions on age at calving and on days in milk and the random effect of animal. (Co) variance components were estimated using REMLF90 (Misztal et al., 1999) and REML procedures based on univariate animal models. |
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