双重和三重配种对母猪产仔力影响

Studies on the Effect ofDifferent Mating Methods on Reproductive Efficiencies of Sow

本文采用双重和三重配种对本场一千多头母猪的产仔力进行观察结果三重配种显著提高母猪产仔数和产活仔数（Ｐ＜０．０１），两种配种法对仔猪初生重无显著影响（Ｐ＞０．０５）。

Observations of reproductive efficiencies were carried out in 319 sows with doublemating (group I ) and triple mating methods(group Ⅱ ). The resultS show that litter size andalive piglets at birth in group Ⅱ were significantly higher than that in group I (P<0. 01 ),but there was no significant difference in themean individual weight of baby pig with twodifferent matins methods (P> 0. 05). The resultsShow that triple mating method is one of practical and effective measure for increasing reproductive efficiencies in sow.