RYR1基因对母猪繁殖性能的影响  

Effects of RYR1 Gene on Reproductive Traits of Large White Sow

作　　者：刘桂琼[1] 丁家桐[1] 姜勋平[1] 张牧[1] 

机构地区：[1]扬州大学畜牧兽医学院,江苏扬州225009

出　　处：《中国兽医学报》2002年第4期392-394,共3页Chinese Journal of Veterinary Science

基　　金：江苏省教育厅资助项目 (99KJB2 3 0 0 0 1) ;扬州大学基金资助项目 (IO1112 18)

摘　　要：用 PCR- RFL P法检测 2 2 5头大约克母猪的 RYR1(ryanodine receptor,RYR1)基因 ,它具有 NN、Nn和 nn3种基因型 ,其频率分别为 0 .76、0 .14和 0 .10 ;等位基因 N和 n的基因频率分别为 0 .83和 0 .17。该基因处于遗传不平衡状态 (P<0 .0 1)。具有 NN、Nn和 nn基因型母猪第 1胎产仔数分别为 10 .2 1、9.6 2和 8.2 2头 ;断奶仔猪数分别为9.2 1、8.13和 7.11头。等位基因 n使仔猪断奶应激效应具上升趋势 ,对增重有不利影响 ;降低母猪的产仔数和仔猪成活率 ,对繁殖性能有不良的遗传效应 ,有必要从母猪群中清除该等位基因。Two hundred and twenty five Large White sows were genotyped for ryanodine receptor gene(RYR1) by restriction fragment length polymorphism analysis(RFLP).The genotype frequencies of NN,Nn and nn were 0 76,0 14 and 0 10,respectively.The frequency of n allele was 0 17 and that of N allele was 0 83.RYR1 gene in this sow population was in genetic disequilibrium( P <0 01).For NN,Nn and nn sows,the litter sizes of first parity averaged were 10 21,9 62 and 8 22,respectively,the litter sizes at weaning were 9 21,8 13 and 7 11.The result showed that n allele increased piglet weaning stress,decreased litter size,the number born alive and growth rate of litters.It was concluded that n allele has negative effect on reproduction performance and piglet growth.We should eliminate n allele in our sow groups.

关 键 词：母猪 RYR1基因 繁殖性能 产仔数 初生重 断奶应激 

分 类 号：S828.2[农业科学—畜牧学]