【摘要】 大河猪与巴克夏、长白猪和杜洛克猪杂交,其后代肥育期日增重分别达到548.4g、637.6g和631.3g。长×大、杜×大组合的瘦肉率分别达到52.32％和53.32％。295头杜×大组合中试的日增重为592.2g,瘦肉率达到54.79％,利用大河猪的品系母猪作杂交母本则性能更好。杜×大组合中的不同杜洛克公猪的后代在肥育性能上亦有差异。更多还原

【Abstract】 The crosses between Dahe pigs the local breed and Berkshire. Landrace or Duroc (i.e. Dahe×Berkshire; Dahe×Landrace and Dahe×Duroc) all showed remarkable heterosis, and their daily increasing growth in weight averaged 548.4g, 637.6g and 631.3g respectively.The lean% of Landrace×Dahe, Duroc×Dahe made 52.32% and 53.32% respectively.The daily increasing growth in weight and lean% for 295 pigs of Duroc×Dahe combination in intermediate test reached 592.2g and 54.79% respectively. Using line sows of Dahe breed as crossing dams gave better performance, Whereas the performance traits in progenies of Duroc×Dahe combination were different.更多还原