中国猪业2024，Vol.19Issue(3)：85-92,8.DOI:10.16174/j.issn.1673-4645.2024.03.009
胎次和配种季节对二元母猪繁殖性能的影响
Effects of Parity and Mating Season on Reproductive Performance of Binary Sows
摘要
Abstract
In order to study the effects of parity and mating season on the reproductive performance of Landrace × Large-White binary sows,this experiment selected the litter data of 11 333 litters of Landrace × Large-White binary sows,included total number born,num-ber born alive,number of weak births,litter birth weight,number of wearning,time to pregnancy,and number of stillborn,and analyzed the effects of mating season and parity on the reproductive performance of Landrace × Large-White binary sows.The results showed that the total number born of 4th,5th,and 6th parity sows were significantly higher than that of other parities(P＜0.05),and the total number born of 6th parity soews were the highest;and the born alive piglits number of 4th parity sows were significantly higher than that of other parities(P＜0.05);the number of weak births piglits of 2nd parity sows were significantly lower than that of other parities(P＜0.05);the litter birth weight of piglits of 4th parity sows were significantly higher than that of other parities(P＜0.05),the time to pregnan-cy of 2nd parity sows were significantly lower than that of other parities(P＜0.05),and the time to pregnancy of 1st parity sows were sig-nificantly higher than that of other parities(P＜0.05);the number of stillborn showed an overall increasing trend with the parity,and reached the highest in 7th parity and more(P＜0.05).The parity sows were significantly positively correlated with the total number born,number born alive,litter birth weight,number of wearning,and number of stillborn(P＜0.01);the parity sows were significantly negatively correlated with the time to pregnancy(P＜0.01).The 4th parity sows had the best reproductive performance when mated in autumn and winter,the 2nd parity sows had the best reproductive performance when mated in summer,the 5th parity sows had the best reproductive performance when mated in spring,the 6th parity sows had the best reproductive performance when mated in autumn;the 1st parity sows had the best reproductive performance when mated in autumn,more than 7th parities sows had the best reproductive perfor-mance when mated in spring.The study on effects of parity and season on the litter performance and piglets production performance of sows,could provide data reference for pig breeding enterprises to make reasonable utilization period of sows.关键词
母猪/配种/季节/胎次/繁殖/遗传/二元杂交Key words
sows/mating/season/parity/reproductive/genetic/Landrace × Large-White binary分类
农业科技引用本文复制引用
卢晓芳,冉茂良..胎次和配种季节对二元母猪繁殖性能的影响[J].中国猪业,2024,19(3):85-92,8.基金项目
湖南省自然科学基金面上项目(2023JJ60247) （2023JJ60247）
