不同配种模式对二元母猪繁殖性能的影响

Influence of Different Mating Mode on Reproductive Performance of Dual Sow

为探讨不同配种方式对二元母猪产仔数的影响,以杜洛克猪、长白猪、大白猪、皮特兰猪四个品种公猪精液采用人工授精的方法对11654头长大二元母猪配种,对所产11654窝总产仔数、窝产活仔数、窝损失等进行统计和分析,分析不同配种模式对二元母猪繁殖性能的影响。结果表明,配种次数、不同品种公猪组合配种对二元母猪总产仔数、产活仔数以及窝损失均无显著影响(P>0.05),但杜洛克公猪所配二元母猪的总产仔数和窝产仔数均高于大白和长白猪(P<0.05);采用长×杜×大组合配种的二元母猪总产仔数和窝产活仔数均高于其它三种组合。试验结果表明,在生产中,可在长白、大白、杜洛克猪中任选两个品种,通过二次配种的方式提高母猪的产仔数。

To explore the influence of pattern of mating on the litter sizes of landrace × Yorkshire dual sow, 11654 landrace × Yorkshire dual sows were mated by Landrace boars, Yorkshire boars, Pietrain boars, and Duroc boars; and the total number born （TNB）, total number born alive （NBA）, and loss of litters were analyzed. The results showed that there was no significant difference between TNB and NBA by two or three breeding and different varieties of boar combination （P〉0.05）, but the TNB and NBA by Duroc boars were higher than that by Yorkshire and Landrace （P〈0.05）. And the total number born and total number born alive for L×D× Y were higher than the other three kinds of combination. Therefore, a- dopting secondary mating by choosing two varieties of Landrace, Large White and Duroc can improve thelitter size of sow in the production.