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.: Home > Animal Science Papers and Reports > 2005 > Volume 23 Number 1 > Jaros³aw Sierszchulski1, Magdalena Helak1, Anna Wolc1, Tomasz Szwaczkowski1, Werner Schlote2

Inbreeding rate and its effect on three body conformation traits in Arab mares

Jaros³aw Sierszchulski1, Magdalena Helak1, Anna Wolc1, Tomasz Szwaczkowski1, Werner Schlote2
1 Department of Genetics and Animal Breeding, The August Cieszkowski Agricultural University of Poznaٌ, Wo³yٌska 33, 60-637 Poznaٌ, Poland 2 Institute of Animal Sciences, Humboldt University of Berlin, Unter den Linden 6, 10099 Berlin, Germany
Abstract :

In a group of purebred Arab mares the level of inbreeding and its effect on three body conformation traits was determined. Moreover, estimated were heritability coefficients of the traits and their phenotypic, genetic and environmental trends. Considered were conformation records of 706 Arab mares born in the years 1936- 1993. The mean inbreeding level of mares was 0.88%. No considerable effect of inbred rate on body conformation traits was found. The obtained partial regression coefficients were close to zero. Heritability coefficients appeared low and amounted to 0.160 (±0.078) for height at withers, 0.052 (±0.067) for chest circumference and 0.050 (±0.054) for circumference of cannon. Negligible positive genetic trend was observed for all the traits studied, whereas the environmental trends were not clear.

Keywords :
Arab horse / body conformation / genetic trend / heritability / inbreeding rate

Date Deposited : 09 Aug 2011 10:51

Last Modified : 09 Aug 2011 10:51

Official URL: http://www.ighz.edu.pl/

Volume 23, Number 1, - 2005

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