杜湘猪、杜圩猪横交后代生产性能比较分析

Comparative Study on Production Performance Between Duxiang Pig and Duwei Pig's Intercross generation

本研究对杜湘猪、杜圩猪横交后代繁殖、生长、胴体与肉质性状进行测定。结果表明,杜湘猪母猪较杜圩猪母猪体躯更长,背膘相对较厚,但背腰较长而窄;初产繁殖性能及胴体性状两者差异不显著;在肉质性状上,由于杜湘猪宰前活重极显著高于杜圩猪,脂肪沉积更加充分,使得大理石纹评分高于杜圩猪,其余指标均表明两者肉质优良。通过横交,毛色分离比例下降,但在繁殖、生长、肉质性状等方面仍存在整齐度低、一致性差等问题,还需进一步选育提高。

In this study, we determined the reproductivity and growth performances as well as meat qualities of Duxiang （DX） pig and Duwei （DW） pig＇s intercross generation. The results showed that DX gilts, compared with DW gilts, had longer body, thicker back fat but longer and narrower back waist. However, nonsignificant differences were noted between the two breeds for both first farrowing reproductive performance and carcass characteristics. As for meat quality, all the indexes indicated good meat quality. The alive weights of DX were significantly （P〈0.01） higher than those of DW, thus the former might have a higher rate of fat deposits. Consequently the marbling scores of DW were lower. Furthermore, the ratio of the coat color declined by conducting intercrossing, nevertheless, further selection should be done to deal with the problems of bad uniformity and consistency for all traits.