Influence of SLA and Reproductive Hormones on Litter Size

doi:10.3321/j.issn:1000-7091.2000.02.027

Abstract

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

CLC Number:

S828.3

JI Haifeng, LIU Yan, MO Yuzhong, GAO Hui, ZHANG Chunying. Influence of SLA and Reproductive Hormones on Litter Size[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2000, 15(2): 128-132. doi: 10.3321/j.issn:1000-7091.2000.02.027.

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