University of Khartoum

Heritability estimates and genetic correlations for post-weaning body weight traits in Sudanese rabbits

Heritability estimates and genetic correlations for post-weaning body weight traits in Sudanese rabbits

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Title: Heritability estimates and genetic correlations for post-weaning body weight traits in Sudanese rabbits
Author: Elamin, K M; Yousif, I A; Elkhairey, M A; Mekki, D M
Abstract: Data on 233 progeny from two consecutive generations of Sudanese local rabbits were used to estimate heritability, and genetic, phenotypic and environmental correlations for post-weaning weekly body weights between 6 and 15 weeks of age. In the first generation, estimates of heritability based on paternal half-sib analyses were moderate, ranging from 0.211 to 0.372. The results for the second generation showed that the estimates of heritability were low to moderate, ranging from 0.085 to 0.295. The genetic correlations in the first generation among growth traits were all positive, but were low to moderate for the correlations of body weights traits at early age with other weight traits, and fairly high for the correlations of body weight traits at late ages with the remaining traits. Heritability estimates for post weaning growth traits were generally moderate, so improvement of this breed should be realized through genetic selection. The genetic correlations among growth traits revealed that selection can be practiced at any stage in the post-weaning period since improving body weight at any stage should improve the trait at other stages.
URI: http://khartoumspace.uofk.edu/123456789/27695


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