作　　者： ; ; ;

机构地区： 仲恺农业技术学院生命科学学院

出　　处： 《家畜生态学报》 2006年第2期34-36,共3页

摘　　要： 本文通过对长大二元杂母猪胎盘效率与总产仔数、产活仔数等的相关关系分析,进行了基于高低胎盘效率的产仔数选择效果研究。结果表明:①按胎盘效率分组,胎盘效率高(6.70)、中(5.30)和低(5.00)的长大二元杂母猪,其窝均产仔数分别为12.68±2.76、10.58±2.33和9.12±2.80;窝产活仔数相应分别为10.70±2.76、10.08±2.70和8.88±2.03;三个组的胎盘效率差异均极显著(P<0.01)。②用杜洛克公猪的精液作人工授精后,长大二元杂母猪高胎盘效率组(6.12±0.40)的总产仔数(12.75±0.45对10.78±0.52)、活产仔数(12.20±0.23对10.20±0.58)均极显著高于低胎盘效率组(5.13±0.37)(P<0.01)。 The relationship between placental efficiency and reproductive performances was analyzed in this paper. To study the genetic characteristics of the placental efficiecy and high and low placental efficiency, the Landrace × Large White Sows were artificially inseminated with Duroc boars semen respectively and their progenies were analyzed. The results showed that：Litter size of high（6.70）,medium（5.30）and low （5.00） placental efficiency group of Landrace×Large White Sows was 12. 68±2.76,10.58±2.33 and 9.12±2.80 respecatively;the numbers of live births were 10.70±2.76,10.08±2.70 and 8.88±2. 03 respecatively; The difference of the placental efficiency of the three groups was highly significant （P〈0.01）. For Landrace× Large White sows ,the litter size（12.75±0.45 VS 10.78±0.52） ,the number of live births （12. 20±0.23 VS 10.20±0. 58） of high placental efficiency group（6. 12±0.40）are higher than those of low placental efficiency group（5.13±0.37）significantly （P〈0.01）.

关 键 词： 胎盘效率 长大二元杂母猪 窝产仔数 窝产活仔数 初生体重

领　　域： [农业科学] [农业科学]