湘村黑猪世代繁育性能分析

Study on Reproductive Performances of Xiangcun Black Pig Grouped by Generations

文章统计分析了湘村黑猪初产0~5世代660窝、经产1~5世代415窝繁殖性能测定数据,以分析其繁殖与哺育性能。结果表明,湘村黑猪总产仔数、产活仔数、21日龄育成仔数、21日龄窝重、70日龄窝重等主要繁育性状,初产和经产分别11.11头、10.32头、9.86头、42.03 kg、172.29 kg和13.18头、12.86头、12.14头、56.06 kg、232.91 kg;经方差分析F检验,70日龄育成率以及初生、21日龄、70日龄仔猪的个体重和窝重等7项性状初产、经产母猪世代间差异显著（P〈0.05）或极显著（P〈0.01）,70日龄育成仔数、21日龄和70日龄育成率等性状经产母猪世代间差异显著（P〈0.05）或极显著（P〈0.01）,总体反映出湘村黑猪是具有较高繁殖性能的培育猪种。

This paper studied on reproduction and nursing performance of Xiangcun Black pig by measured data including 660 litters of primiparous sows during 0~5 generations and 415 litters of multiparous sows during 1~5generations. The results showed that the main breeding traits＇ means including the total number born,number born alive,litter size at 21 d,litter weight at 21 d,litter weight at 70 d of primiparous sows and multiparous sows is respectively 11.11,10.32,9.86,42.03 kg,172.29 kg and 13.18,12.86,12.14,56.06 kg,232.91 kg;by variance analysis,there were significant or very significant differences in the rearing rate at 70 d,birth weight,body weight at 21 d and 70 d,initial litter weight,litter weight at 21 d and 70 d of primiparous sows and multiparous sows（P〈0.05 or P〈0.01）.There were significant or very significant differencesin the litter size at 70 d and the rearing rate at 21 d of multiparous sows（P〈0.05 or P〈0.01）.That generally reflects Xiangcun Black pig had relatively high farrowing performance.