背膘厚度对配套系母猪(L050系)繁殖性能的影响  

The Influence of Backfat on Reproduction Performance in L1050 Multiple Cross Systems

作　　者：刘年超 LIU Nianchao(Agricultural College of Ningxia University,Yinchan Ningxia 750021,China)

机构地区：[1]宁夏大学农学院,宁夏银川750021

出　　处：《现代畜牧科技》2023年第2期70-72,共3页Modern Animal Husbandry Science & Technology

摘　　要：通过对配套系母猪L1050系(初产母猪和经产母猪)参配时,其背膘厚度与窝均产活仔数、仔猪初生窝重及泌乳期间背膘厚度的损失,与断配间隔等生产指标之间的关系进行分析,来探讨背膘厚度对其繁殖性能的影响。试验结果表明:母猪的背膘厚度与胎龄呈负相关。特别是第2胎母猪参配时,背膘厚度下降最明显;初产母猪参配时的背膘厚度为17.0~19.0 mm时,而经产母猪参配时背膘厚度为15.0~18.0 mm,窝均产活仔数最高、初生窝重也最重。初产母猪和经产母猪在哺乳期间背膘厚度都会有所损失,当初产母猪背膘厚度损失3.0~6.0 mm时,其断配间隔最短:(5.24±0.46)d。In order to investigate the effect of backfat thickness on reproductive performance in L1050 sows(primiparous and multiparous)of multiple cross systems.The relationship between backfat thickness and litter live size,litter weight at birth,loss of backfat thickness during lactation,and the interval between weaning to service were analyzed;The results showed that backfat of sows was negatively correlated with sows’ parity.The backfat reduced obviously on the second parity.The backfat between 17.0 ~ 19.0 mm,the multiparous sows were 15.0 ~ 18.0 mm on primiparous sows reproduction performance were the best,and the more litter size and birth weight.The backfat would reduce during the lactation period both primiparous sows and multiparous sows.The backfat reduced between 3.0 ~ 6.0 mm,the interval of between weaning to first estrus was the shortest(5.24±0.46)d.

关 键 词：母猪 背膘厚度 繁殖性能 

分 类 号：S828.3[农业科学—畜牧学]