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.: Home > Animal Science Papers and Reports > 2006 > Volume 24 Number 4 > Pawe³ Szablewski, Anna Wolc, Tomasz Szwaczkowski

The effect of inbreeding level and genetic factors on longevity in Arabian oryx (Oryx leucoryx)

Pawe³ Szablewski, Anna Wolc, Tomasz Szwaczkowski
Department of Genetics and Animal Breeding, The August Cieszkowski Agricultural University of Poznaٌ, Wo³yٌska 33, 60-637 Poznaٌ, Poland
Abstract :

Pedigree information was analysed of 2106 individuals recorded from 184 zoological gardens. Two
single-trait animal models (including inbreeding coefficients as linear or quadratic covariables)
were employed. Three data subsets were formed relative to the length of life. Heritability estimates
were obtained using the DFREML algorithm. Moreover, phenotypic, genetic and environmental
trends were estimated. Mean inbreeding level was 3.8% for all individuals, and 11.2% for the
inbred animals. The inbreeding effects (evaluated as partial linear regression) ranged from -93 days (for individuals living longer than 500 days) to 25 days (for all individuals included). Heritability estimates appeared low. Generally, the time trends were non-negative, indicating the high efficiency of the realized breeding strategy.

Keywords :
Arabian oryx / inbreeding / restricted maximum likelihood / heritability / longevity

Date Deposited : 09 Aug 2011 10:44

Last Modified : 09 Aug 2011 10:44

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

Volume 24, Number 4, - 2006

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