摘要
为研究妊娠母猪膘情与繁殖性能的关系,试验随机选用32头妊娠母猪,用B超活体测定其产前3 d倒数3、4肋骨间、胸腰椎结合处、腰荐椎结合处偏离背中线5-8 cm处背膘厚,并与其窝产仔数、产活仔数、死胎数、、仔猪初生重、初生窝重、18日龄断奶重、断奶窝重及断奶后发情天数等指标进行比较。结果显示,背膘厚度较薄组各项繁殖指标普遍优于背膘厚组,说明保持适当膘情对妊娠母猪繁殖性能的提高具有促进作用。
This experiment was carried out with the relationship between the back-fat thickness of pregnant sows and reproductive performance.Choosing 32 pregnant sows,alive determined the back-fat thickness at the points among backwards 3,4 rib,the connection between thoracic and lumbar vertebrae,and the the connection between the lumbar vertebrae and sacrum by type-B ultrasonic device,and compared with litter size,number of born alive,number of dead embryo,brith weight,brith wt.of litter,weaning wt.at 18 d,weaning wt.of litter and oestrus days after weaning.The results showed that most of reproductive performance in the group of thinner back-fat was batter than the thickest group.It proved that proper back-fat thickness could improve the reproductive performance of pregnant sows.
出处
《贵州畜牧兽医》
2010年第5期1-4,共4页
Guizhou Journal of Animal Husbandry & Veterinary Medicine
基金
黔科合J字【2006】2050
关键词
妊娠母猪
繁殖性能
背膘厚
B超
Pregnant sows
Reproductive performance
Back-fat thickness
Type-B ultrasonic device
作者简介
罗卫星（1958-），男，贵州平坝人，副教授，研究方向：动物遗传育种与繁殖。E—mail：ef．wxluo@gzu．edu．cn
