胎次、配种季节、背膘厚度、与配公猪品种对加系大约克夏母猪繁殖性能的影响  

Effects of parities,mating seasons,backfat thickness and breeds of boars mated on reproductive performance of canadian yorkshire sows

作　　者：王俊锋[1] 郭晶 连慧香[1] 赵云焕[1] 晁诗雨 刘佳[1] 刘英丽[1] WANG Junfeng;GUO Jing;ZHAO Yunhuan;CHAO Shiyu;LIU Ji;LIU Yingi;LIAN Huixiang(College of Animal Science and Technology/Xinyang Agriculture and Forestry University,Xinyang,Henan Province 464000,China;Animal Health Supervision Institute of Lushi County,San menxia,Henan Province 472200,China)

机构地区：[1]信阳农林学院动物科技学院,河南信阳464000 [2]卢氏县动物卫生监督所,河南三门峡472200

出　　处：《中国饲料》2023年第8期29-32,共4页China Feed

基　　金：河南省科技攻关项目(182102110440)。

摘　　要：试验以湖北省某猪场1219窝不同胎次加系大约克夏母猪繁殖记录为基础,分析了不同胎次、配种季节、背膘厚、与配公猪品种对其繁殖性能的影响。结果表明:(1)母猪健仔数和断奶数均以3~4胎次最佳,初生窝重3~4胎次最重,显著高于1、2、5、7、8胎次(P<0.05);弱仔数、畸形数、死胎数及木乃伊数随胎次的增加呈不规律变化;(2)与其他配种季节相比,冬季配种母猪的初生窝重最重,死胎数最低,木乃伊数最高,且差异均显著(P<0.05),但配种季节对健仔数和断奶数的影响不显著(P>0.05);(3)妊娠后期母猪背膘厚度17~20 mm时健仔数和初生窝重最高,14~17 mm时弱仔数和畸形数最低,但差异均不显著(P>0.05);(4)除了死胎数和木乃伊数外,与配公猪为长白公猪的母猪健仔数和断奶数均显著高于与配公猪为加系大约克夏公猪的母猪(P<0.05),但对初生窝重、弱仔数和畸形数无显著影响(P>0.05)。由此可知,胎次、配种季节、背膘厚度及与配公猪品种均不同程度地影响加系大约克夏母猪的繁殖性能,其中加系大约克夏母猪3~4胎次、冬季配种、与配公猪为长白公猪及妊娠后期背膘厚度控制在17~20 mm时繁殖性能最佳。Based on the reproductive records of 1219 litters of Canadian Yorkshire sows with different parities in a pig farm in Hubei Province,this experiment analyzed the effects of different parities,mating seasons,backfat thickness and breeds of boars mated on their reproductive performance.The results showed as follows:(1)The number of healthy piglets and weaned piglets of sows were both the best in 3~4 parities,and the newborn litter weight of sows was the heaviest in 3~4 parities,which was significantly higher than those in 1,2,5,7,8 parities(P<0.05);The number of weak offsprings,malformations,stillbirths and mummieschanged irregularly with the increase of parity;(2)For sows mated in winter,the newborn litter weight was the heaviest,the number of stillbirths was the lowest,and the number of mummies was the highest,which were all significantly different from other breeding seasons(P<0.05),but the effects of the mating season on the number of healthy piglets and weak offsprings of sows were not significant(P>0.05);(3)For Canadian Yorkshire sows in late pregnancy,the number of healthy piglets and the newborn litter weight were the highest when the backfat thickness of sows was 17~20 mm,and the number of weak offsprings and malformations were the lowest when the backfat thickness of sows was 14~17 mm,but those differencewere not significant(P>0.05);(4)In addition to the number of stillbirths and mummies,the number of healthy piglets and weaned piglets of sows mated with Landrace boars were significantly higher than thoes of sows mated with Canadian Yorkshire boars(P<0.05),but the newborn litter weight,the number of weak offsprings and malformations were not significantlyaffected(P>0.05).Therefore,parities,breeding seasons,backfat thickness and breeds of boars mated all affected the reproductive performance of Canadian Yorkshire sows in different degrees,and the reproductive performance of Canadian Yorkshire sows was the bestwhen the parity of sows was 3~4 parities,the mating season was winter,the mating boars were landra

关 键 词：加系大约克夏 胎次 配种季节 背膘厚度 与配公猪品种 繁殖性能 

分 类 号：S828[农业科学—畜牧学]