摘要： 对232头经产母猪进行了SLA分型、生殖激素水平和产仔性状测定，其中，D型母猪的产仔性能显著高于其他类型，表明SLA分型可以成为猪繁殖性能的辅助选择遗传标记；在母猪泌乳阶段，促黄体素（LH）雌激素（E₂）和孕酮（p₄）的水平都较低，在配种阶段，雌激素分泌达到峰值，在怀孕15d时，促黄体素和孕酮的分泌达到峰值；高产、中产和低产母猪在各生理阶段的激素水平差异不显著，难以预测产仔数的多少。

关键词: SLA, 激素, 产仔数, 猪

Abstract: Twohundred and thirty-two sows were studied to de termine the influence of SLA and reproductivehormones on litter size.Compared w ith other SLA type sows,type-Dhadhigher reproduction.So SLA type might be used as a genetic marker in reproduction selection.During the lactation,LH,E₂ and P₄ levels kept low.E₂ reached its peak at breeding stage.LH and P₄ reached their peaks on the 15th day of pregnancy.LH,E₂ and P₄ at different stages showed no significant differences amonghigher,middle and lower reproduction sows,which indicated that to predict litter size of sows with difference ofhormone levels was difficult.

Key words: SLA, Hormone, Litter size, Sow

中图分类号: 

• S828.3