不同妊娠阶段母猪采食量及背膘厚对繁殖性能的影响

The Effect of Feed Intake and Backfat Thickness on Reproductive Performance of Sows at Different Pregnancy Stages

为探究不同妊娠阶段母猪采食量及背膘厚对繁殖性能的影响。该研究选取了长大母猪383头,分别测定不同妊娠阶段的背膘厚以及繁殖性能的相关数据,分析不同妊娠阶段背膘厚对繁殖性能的影响,以及对于体况异常的母猪不同采食模式对背膘厚及繁殖性能的影响。结果表明,妊娠母猪背膘厚与总产仔数、产活仔数、初生均重之间存在相关性(P<0.05),在妊娠0、30、60、90 d和110 d理想背膘厚范围分别是16~18、16~18、18~20、18~20、18~20 mm。体况异常的妊娠母猪通过调整饲喂曲线,能够显著性提升总产仔数、产活仔数以及仔猪初生均重等性能指标(P<0.05)。综上所述,长大母猪在不同妊娠阶段通过采食量调控将背膘厚调整在合理范围内,能够提升其繁殖性能。

To investigate the effects of feed intake and backfat thickness on reproductive performance of sows at different stages of pregnancy.This study selected 383 Landrace*Large White sows and measured their backfat thickness and reproductive performance at different pregnancy stages.The effects of backfat thickness at different pregnancy stages on reproductive performance were analyzed,as well as the effects of different feeding patterns on backfat thickness and reproductive performance for sows with abnormal body conditions.The results showed that there was a correlation between backfat thickness of pregnant sows and total number born,number born alive,birth weight(P<0.05).The ideal backfat thickness ranges at 0,30,60,90,and 110 days of pregnancy stages were 16~18,16~18,18~20,18~20 mm,and 18~20 mm respectively.By adjusting the feeding curve of pregnant sows with abnormal body condition,the performance indexes such as total litter size,live litter number and average weight at first birth of piglets can be significantly improved(P<0.05).In conclusion,the reproductive performance of Landrace*Large White sows can be improved by adjusting the backfat thickness within a reasonable range through feed intake regulation at different gestation stages.