PL EN


Preferences help
enabled [disable] Abstract
Number of results
2007 | 48 | 2 | 145-151
Article title

Genetic evaluation of performance traits in Brazilian Quarter Horse

Title variants
Languages of publication
EN
Abstracts
EN
The aim of this study was to estimate genetic parameters for racing performance traits in Quarter Horses in Brazil. The data (provided by the Sorocaba Jockey Club) came from 3 Brazilian hippodromes in 1994?2003, with 11 875 observations of race time and 7775 of the speed index (SI), distributed in 2403 and 2169 races, respectively. The variance components were estimated by the MTGSAM program, under animal models including the random additive genetic effect, random permanent environmental effect, and the fixed effects of sex, age and race. Heritabilities for race time and the SI, for the 3 distances studied (301, 365 and 402 m), varied from 0.26 to 0.41 and from 0.14 to 0.19, respectively, whereas repeatabilities varied from 0.36 to 0.68 (time) and from 0.27 to 0.42 (SI) and the genetic correlations from 0.90 to 0.97 (time) and from 0.67 to 0.73 (SI).
Discipline
Year
Volume
48
Issue
2
Pages
145-151
Physical description
Contributors
References
Document Type
ARTICLE
Publication order reference
M.D.S. da Mota, Department of Animal Breeding and Nutrition, School of Veterinary Medicine and Animal Science, Sao Paulo State University, C.P.560, CEP 18618-000, Botucatu/SP, Brazil
Identifiers
YADDA identifier
bwmeta1.element.element-from-psjc-69da8d51-37f1-3b10-9176-5c0d2799c73c
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.