摘要
为研究胎次和配种季节对PIC母猪繁殖性能的影响,根据陕西省某PIC父母代良种猪繁育场2007～2009年繁殖母猪生产资料,分别选取607头和692头繁殖母猪生产资料(剔除有寄养仔猪的繁殖母猪),统计其不同胎次和配种季节的总产仔数、产活仔数、健仔数、仔猪初生窝重、初生个体均重和断奶率等繁殖性能。结果表明:胎次和配种季节对PIC母猪繁殖性能均有显著影响(P<0.05);母猪1～3胎繁殖性能随胎次呈增加趋势,第3胎达到高峰,第6胎后繁殖性能逐渐下降;同时,PIC母猪的繁殖性能以秋季配种时最好,冬季次之,夏季最差。PIC母猪的最佳繁殖胎次为第2～6胎次,适宜配种季节为秋季和冬季。
To investigate the effect of parities and mating seasons on the reproductive performance of PIC sows,the production records of 607and 692PIC sows except for the PIC sows with adopted piglets were collected from 2007to 2009in a breeding farm in Shaanxi province,respectively.The results showed that the parity and mating season all have significant effect on the reproductive performance of PIC sows（P 0.05）.The reproductive performance of PIC sows were improved gradually from the first to the third parity,the peak of which was at the third parity,and then the reproduction performance decreased slowly after the sixth parity.Furthermore,the reproduction performances of PIC sows mated in the fall were the best,followed by winter,and the worst for PIC sows hybridized in summer.
出处
《家畜生态学报》
北大核心
2013年第6期40-43,共4页
Journal of Domestic Animal Ecology
基金
河南科技大学博士科研启动基金资助(09001551)
国家自然科学基金项目(31201801)
国家自然科学基金项目(31172207)
关键词
胎次
配种季节
PIC母猪
繁殖性能
parity
mating season
PIC sow
reproductive performance
