江西农业大学学报Issue(1)：174-180,7.
MUC13腹泻抗性纯合杜洛克种群的选育研究
Selection of Duroc Breeds Homozygous for MUC13 Diarrhea-resistant Allele
摘要
Abstract
MUC13 is a major gene to control ETEC F4ac adhesion that causes diarrhea in piglets .In the present study ,the MUC13 resistant allele was determined and its performance traits were recorded in a Duroc nucleus population of 250 individuals through three successive generations using molecular breeding and con-ventional breeding techniques .After the three-generation selection ,20 litters of breeding sows and 20 litters ofmultiplier sows at the same litter during lactation were observed under the same feeding and management con-ditions in the experiment.As a result,the diarrhea incidence rate was 8.7%and 18.4%in the breeding sows and propagation sows before weaning ,respectively.Of note,this difference was significant (P<0.01) in two groups while no significant difference was found in survival rate between these two groups when weaned .Fur-thermore,no significant difference in the date when the weight was up to 100 kg after 3 generation’s measure-ment and selection was found between the first generation and third generation in the breeding population .On the contrary,live backfat thickness was reduced by 1.46 mm and showed a significant difference between the two generations (P<0.05).In addition,no significant differences were found in growth rate and live backfat thickness across the different individuals of genotype .In conclusion ,the MUC13-resistant allele can confer re-sistance to diarrhea in piglets and reduce live backfat thickness in adult pigs whereas has no significant effect on growth and development .关键词
杜洛克/MUC13/选育Key words
Duroc/MUC13/breeding分类
农业科技引用本文复制引用
阮国荣,林国忠,何晓芳,黄晶,肖石军,陈金雄,李军山,刘亚轩,孙耀华,陈福珍..MUC13腹泻抗性纯合杜洛克种群的选育研究[J].江西农业大学学报,2014,(1):174-180,7.基金项目
福建省科技计划重点项目（2010N0012）和福建省农业跨越计划项目 （）
