不同杂交组合对母猪繁殖性能的影响

Effects of Different Mating Combinations on Reproductive Performance of Sows

非洲猪瘟导致能繁母猪严重不足,现存能繁母猪中三元母猪占了相当比例。文章以广西某公司下属猪场2020年共计35925窝分娩数据为材料,统计9种杂交组合仔猪初生窝重、窝均总仔数、窝均活仔数、窝均健仔数、窝均死胎及木乃伊数,分析各组合母猪繁殖性能差异。结果显示,不同杂交组合母猪繁殖性能有显著差异(P<0.05),其中YX106(扬翔Ⅰ号猪配套系终端父本)公猪配YX233(扬翔Ⅰ号猪配套系父母代)母猪繁殖性能最佳,初生窝重为20.86 kg,显著高于其他组合;窝均总产仔数达16.53头,显著高于除了YX116(扬翔Ⅰ号猪配套系第一父本)公猪配YX126(扬翔Ⅰ号猪配套系第一母本)母猪组合之外的其他组合,窝均活仔数达15.81头,显著高于其他组合。商品肉猪母猪各方面指标均显著低于别的组合,但窝均活仔数也在11头左右。

There is a serious shortage of reproductive sows in the African swine fever era,and three-way crossbred sows account for a considerable proportion of the existing reproductive sows.In this paper,a total of 35925 litters of a company in Guangxi in 2020 are analyzed aimed at calculating litter birth weight(LWB),total number born(TNB),number born alive(NBA),number healthy birth(NHB)of sows of 9 mating scenarios.The average number of stillbirths and mummies was analyzed,and the reproductive performance differences among sows from the mating scenarios were analyzed.Results showed that significant differences in the reproductive performance were observed among sows from different mating scenarios.Overall,mating YX106 boars(terminal sire of Yangxiang YXⅠsynthetic line)with YX233 sows(two-way crossbred sows of Yangxiang YXⅠsynthetic line)showed the best reproductive performance,which resulted in an average LWB of 20.86 kg(significantly better than other scenarios),TNB of 16.53(significantly better than the other combinations except for the mating between YX116 boars(sire breed of Yangxiang YXⅠsynthetic line)and YX126 sow group(dam breed of Yangxiang YXⅠsynthetic line),and NBA of 15.81(significantly better than other scenarios).Three-way crossbred sows,for which NBA reached 11 per-litter,showed the worst reproductive performance in the analyzed traits.