Genetic and non-genetic factors affecting doe litter traits for bauscat, californian and gabali rabbit breeds under Egyptian conditions
2011
Reda, F.M. | El-Maghawry, A.M. | El-Saiad, Gh.A. | Abo-Doma, A.F.
The present study was carried out to evaluate the genetic and non-genetic aspects of Bauscat (B), Californian (Cal) (as an exotic breeds) and Gabali (Gab) (as an Egyptian local breed) rabbits for doe litter traits when singletrait animal model was used in the analysis. The important results could be summarized as follows: , Years of kindling significantly (P:¡Ü 0.05, 0.01 or 0.001) affected litter size at 21 days and litter weight at birth in B rabbits; litter size and weight at 21 days and at weaning in Cal rabbits and all litter traits in Gab rabbits. ,Season of kindling showed a significant (P:¡Ü 0.05, 0.01 or 0.001) effects on most litter traits in the three rabbit breeds studied. , Litter weight gain had affected significantly (P ¡Ü 0.01 or 0.001) by year of kindling, season, parity order and litter size at birth in the three rabbit breeds studied. , Pre-weaning mortality differed significantly (P¡Ü 0.05) by year of kindling and litter size at birth in Cal; parity and litter size at birth in Gab rabbits. Heritability, estimates for all litter traits were low and moderate in B and Cal breeds, while in Gab ones, were to some extent higher for most litter size traits studied. , Repeatability estimates for litter size and weight traits were low and moderate in B, Cal and Gab rabbits, but, for litter size at 21 days and at weaning ere higher in Gab rabbits.
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