荣昌猪杂交组合测定及分析
Combining ability test of Rongchang pig cross combinations
-
摘要: 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。Abstract: 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 × Rongchang (YR)two hybrid sows farrowing total number was 13.07(±2.5),there was no significant difference with Landrace × Rongchang sow(LR)two miscellaneous sow,but significantly better than purebred Rongchang;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.
下载: