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PERFORMANCE OF SHANXI BLACK PIGS IN PUREBRED AND CROSSBRED BREEDING
Author(s): 
Pages: 1-7
Year: Issue:  2
Journal: Chinese Journal of Animal and Veterinary Sciences

Keyword:  猪杂交纯种猪日增重肥育性能正反交杂交效果眼肌面积杂交组合日龄体重胴体品质;
Abstract: 116 purebred and crossbred pigs in different combinations were involved in testing finishing traits and 30 of them in testing carcass merit. Shanxi Black(S)Neijang (N)and Berkshire(B)pigs were crossed reeiprocally with Shanxi Local(L) pigs, with purebreds intermated as control groups. All crossbred groups showed statistically significant heterosis in daily gain except ♂×B♀. Among them S♂×L♀, L♂×S♀and B♂×L♀ showed highly statistically significant heterosis(P<0.01). The daily gain for S was greater than that for B and L, but slightly lower than that for N among the purebreds. In comparing sires, S is the best. There was no significant difference between the reciprocal crosses. In carcass merit, the traits which are closely related to lean production such as carcass length and eye muscle area were demonstrated to be of intermedia inheritance, as were the thickness of skin and backfat. The leaf fat and caul fatshowed dominant or overdominant inheritance, but different combinations showed different ways of inheritance.
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