期刊论文

中文

中国农业科学

0578-1752

1991

24

5

7-14

本校为第一机构

对引入我国的大约克夏、长白猪的肢蹄结实度分别进行了遗传分析。肢蹄结实度桉前、后肢分解为关节、蹄裂、蹄枕（蹄底增生）、偏蹄、X肢势、O肢势、蹄壳质地、总评分只个性状,进行量化评分。用我们推导的单元内混合家系相关法进行估算,大约克夏、长白猪的前、后肢总评分遗传力为0.15-0.30,单个肢蹄性状的遗传力为低到中等或稍高（0.01-0.34）;还估算了肢蹄性状与体尺性状、繁殖性状间表型相关及遗传相关。表明体型过大对肢蹄结实度不利,肢蹄结实度对母猪单窝繁殖力影响较小。根据遗传分析结果制定了肢蹄性状选择指数,提出了改进肢蹄结实度的措施。

Genetic analysis was carried on for foot and leg (F-L) soundness in Large White and Landrace Swine. F-L soundness was separated in 8 traits to score for front and rear legs respectively. They are joint conditions, cornified hoof cracks, soles hyperplasia, digits uneven, knock-kneed, bowlegged, texture of eornified hoof and overall score. The method of estimating genetic parameters was Mixed Families Correlations Within Units which we worked out. Heritabilities of front and rear F-L overall score were 0.15-0.30 in Large White and Landrace Swine. Heritabilities of individual F-L Traits were low ...