摘要
为研究高产新丹系大约克后备母猪背膘厚度与产仔数、弱仔率、初生重的关系，试验随机抽取174头后备母猪采用背膘测定仪活体测定背膘厚度，结合第一胎次产仔数、弱仔率、初生重等数据，分析不同膘情厚度下的母猪产仔性能。结果表明：背膘厚度在13-16mm时产仔数较好，在14-15mm时产仔数最多并与11mm以下组相比较存在显著差异（P〈0．05）。在弱仔率方面，背膘厚度在13-17mm时弱仔率较低，和各组别相比较具有显著差异（P〈0．05）。在窝初生重方面，背膘厚度在14-16mm时窝初生重最大，但与各组比较差异不显著（P〉0．05）。综合以上数据得出，新丹系大约克后备母猪背膘厚度为14-15mm时，头胎的产仔性能最佳。
To study the relationship between back fat thickness and litter size, weak rate, birth weight of New Dan Yorkshire sows in breeding, 174 sows were randomly chosen to measure back fat thickness in vivo by the back fat tester combining with it＇s first births number, weak rate, birth weight and other data to analyze sow＇s production performance. According to the results, when the back fat thickness of New Dan Yorkshire sows was 13-16 mm, the births number was higher. When the back fat thickness was between 14 mm and 15 mm, the births number was much higher than that of less 11 mm group （P〈0. 05）. In terms of weak rate, when the back fat thickness was 13-17 mm, the weak rate was lower than that of other groups, and the difference was significant （P 〈 0. 05）.In birth weight, when the back fat thickness was 14-16 mm,the birth weight was the heavi- est, but there was no explicit difference compared with that of other groups.
出处
《经济动物学报》
CAS
2016年第3期168-170,共3页
Journal of Economic Animal
基金
长沙市科技计划重点项目(K1403018-21)
关键词
背膘厚
产仔性能
产仔数
弱仔率
初生重
back fat thickness
reproduction performance
number of births
weak rate
birth weight
