母猪胎盘效率遗传特点的研究  

Studies on the Genetic Characteristics of Placental Efficiency in Swine

作　　者：吴同山[1] 张豪[1] 李岩 张守全[1] 

机构地区：[1]华南农业大学动物科学学院,广东广州510642 [2]东莞市畜牧科学研究所,广东东莞523086

出　　处：《江西农业大学学报》2006年第6期890-892,共3页Acta Agriculturae Universitatis Jiangxiensis

基　　金：广东省科技计划项目(2004B60301013);广东省自然科学基金项目(04020611)

摘　　要：收集了1 059胎次的长白、大白、杜洛克、大花白和蓝塘猪5个品种母猪的胎盘效率,分析了胎盘效率与窝均总产仔数、窝均产活仔数的相关关系,估计了胎盘效率的遗传力。结果表明:不同品种猪的胎盘效率不同,胎盘效率与窝均总产仔数的相关系数为0.310 3、与窝均产活仔数的相关系数为0.363 8,均呈中等强度正相关关系;5个品种猪混合数据胎盘效率的遗传力为0.292,长白猪胎盘效率的遗传力为0.303,胎盘效率具有中等强度的遗传力,可作为种猪生产中提高母猪繁殖性能的选择指标。Placental efficiencies （PE） were collected from Landrace, Yorkshire, Duroc, Dahuabai and Lantang sows （1 059 litters）, the relationships between PE and litter size, the number of pigs born alive were analyzed and the heritability of PE was evaluated. The results showed that PEs were different among the five pig breeds. The correlation coefficients between PE and litter size, the number of live births were 0. 310 4, 0. 363 8 respectively in all the five pig breeds. The heritability of PE was 0. 303 for Landrace, 0. 292 for the pooled data of all the five breeds. In conclusion, PE can be used as a trait to improve the reproduction performance of sows.

关 键 词：猪 胎盘效率 窝均总产仔数 窝均产活仔数 遗传力 

分 类 号：S828.2[农业科学—畜牧学]