In this experiment,RYR gene polymoiphisms were detected by methods of PCR-RFLP in three breeds(Landrace, Duroc and Yorkshire). The analyzis of the TNB, LEW, LWT28, the backfat thickness, ND and the RYR gene were carried out.

• 本研究采用PCR-RFLP技术检测了长白，约克夏和杜洛克猪群的RYR基因的多态性，分别分析了RYR基因与猪的产仔数(TNB)、初生重(LBW)、仔猪28日龄重(LWT28)、背膘厚(The Backfat Thickness)、死胎数(ND)之间的相关关系。