Sánchez J P, Baselga M, Ducrocq V
Departamento de Ciencia Animal, Universidad Politécnica de Valencia, Valencia, Spain.
J Anim Breed Genet. 2006 Jun;123(3):180-5. doi: 10.1111/j.1439-0388.2006.00590.x.
An estimation of the genetic and environmental correlations between prolificacy (kits born alive and number of kits at weaning) and functional longevity in a population selected for litter size at weaning since 1992 was carried out. The method is only an approximation, but suggests that genetically longevity and litter size are not antagonistic objectives in breeding programmes, because the estimated genetic correlations are not significantly different from zero.
对自1992年以来因断奶窝仔数而被选择的群体中繁殖力（产活仔数和断奶时仔数）与功能寿命之间的遗传和环境相关性进行了估计。该方法只是一种近似方法，但表明在育种计划中，从遗传角度来看，寿命和窝仔数并非相互对立的目标，因为估计的遗传相关性与零没有显著差异。
