荣昌猪杂交组合测定及分析

Combining ability test of Rongchang pig cross combinations

以荣昌猪保种核心群为基础,对荣昌猪不同组合的两系和三系杂交后代进行繁殖、生长、胴体及肉质性能方面的指标测定。结果表明,在繁殖性能上,大约克×荣昌(YR)二杂经产母猪总产仔数为13.07(±2.5),与母猪长白×荣昌(LR)二杂母猪无显著差异,但显著优于纯种荣昌猪,繁殖性能的杂交优势明显;在生长速度方面,LR的日增重为635.28 g,显著高于YR的日增重593.41 g;杜洛克×长白×荣昌(DLR)三系杂交商品猪的日增重和达100 kg日龄分别为775.88 g、190 d,极显著高于杜洛克×大约克×荣昌(DYR)商品猪的相应指标。在胴体和肉质方面,LR和YR、DLR与DYR在大多数指标上无显著差异。

Using the core group of Rongchang pig as dam line, we produced two lines and three-line hybrid offsprings by different combinations, and measured the reproduction, growth, carcass and meat quality index to evaluate those offspring performances. The results showed that about the reproductive performance, Yorkshire x Rongehang （YR） two hybrid sows farrowing total number was 13.07 （ ± 2.5）, there was no significant difference with Landrace x Rongchang sow （LR） two miscellaneous sow, but significantly better than purebred Rongehang; in terms of growth rate, the average daily gain （ADG） of LR was 635.28 g, significantly higher than that of YR with 593.41 g; the ADG and up to 100 kg days of Duroc × Landrace × Rongchang （DLR）three-line hybrid pig were 775.88 g, 190 d, respectively, significantly higher than those of Duroc × Yorkshire × Rongchang （DYR）commercial pig. There was no significant difference in most of the indicators about carcass and meat quality between LR and YR and between DLR and DYR.