五指山小型猪繁殖性能测定

目的测定封闭群五指山小型猪繁殖性能指标。方法依据相关标准，测定普通级封闭群五指山小型猪种猪繁殖性能，并通过SAS软件进行相关统计分析。结果封闭群五指山小型猪繁殖行为学参数稳定，母猪性成熟早，胎次对窝产仔率、仔猪生存率以及个体重量有一定的影响，但多数统计学差异不显著。相关性分析显示，窝产活仔数与出生个体重间存在负相关，并且随着胎次的增加负相关性增强。结论封闭群五指山小型猪生产繁育性能较高，具有较好的实验动物化价值。仔猪个体发育过程中个体间差异仍有增大的趋势，提示种群仍需进一步选育和纯化。

Determination of Reproductive Performance of Outbred Wuzhishan Minipigs

Objective To measure the reproductive performance of outbred Wuzhishan minipigs （WZSP）. Methods All reproductive performances were determined according to national and industry standards. The statistical analyses were performed by the SAS soft. Results The reproductive behavior parameters of WZSP were stable and the females showed early sexual maturity. There were some differences between birth frequence and born and survival number of the generations, but most of the differences were not obvious. Correlation analysis showed that there were negative correlations between birth survival number ＆ body weight of outbred WZSP, which were enhanced with the increase of birth frequencies. Conclusion WZSP exhibited higher reproduce performance and dressing percentage. And as experimental animals, WZSP will show a better value. Some differences in coefficient of variation showed us further more work on seed selection and purify.