家畜生态学报2018，Vol.39Issue(4)：55-58,4.
背膘厚度对约克夏妊娠母猪繁殖性能的影响
Effect of Backfat Thickness on Reproductive Performance of Yorkshire Sow
摘要
Abstract
The purpose of this study is to explore the influence of different back fat thickness on the litter number,the number of stillbirths and the newborn litter weight,with Yorkshire sows as the research object.120 Yorkshire sows of 3 parities were taken to determine their backfat thickness before delivery,and they were divided into thin group (＜16 mm),moderate (16～22 mm) and thick(＞22 mm) group according to backfat thickness.At the same time,the indexes such as litter size,the number born alive,stillbirth,stillbirth rate and neonatal litter weight were recorded.The results show that moderate group had significantly higher litter size (11.62 piglets) than the other two groups(9.83 and 9.61) (P＜0.05);the number of live birth of thick group was 11.62,significantly higher than that of the other two,namely,8.82 and 8.00 (P＜0.05);the birth litter weight of moderate group was 17.71 kg,extremely higher than the other two groups:14.36 kg and 12.54 kg (P＜0.01);and the stillbirth number and stillbirth rate of moderate group were 0.10 and 0.01％,extremely lower than the other two groups (P＜0.01).Therefore,it is concluded moderate backfat thickness of pregnant sow have a positive effect on improving litter size,the number of live birth,newborn litter weight,and on reducing stillbirth number and stillbirth rate.In production,the feeding and management on pregnant sow should be strengthened so as to ensure its thickness and improve economic benefit.关键词
母猪/膘情/窝产活仔数/初生窝重/死胎率Key words
sow/thickness/litter number/newborn litter weight/stillbirth rate分类
农业科技引用本文复制引用
葛文霞,柳旭伟,杨力伟,刘晓娜,李江维..背膘厚度对约克夏妊娠母猪繁殖性能的影响[J].家畜生态学报,2018,39(4):55-58,4.基金项目
公益性行业(农业)科研专项经费项目(201303062) （农业）
新疆农业职业技术学院资助课题(XJNZYKJ2014006) （XJNZYKJ2014006）
