母猪妊娠期长短影响因素分析及其对产仔数的影响  

Analysis of Factors Influencing the Length of Gestation Period of Sows and Their Influence on Litter Size

作　　者：陈宗见 陈远昆 刘杨 刘辰东 沈林園[1] 张顺华[1] 朱砺[1] CHEN Zongjian;CHEN Yuankun;LIU Yang;LIU Chendong;SHEN Linyuan;ZHANG Shunhua;ZHU Li(College of Animal Science and Technology,Sichuan Agricultural Univercity,Chengdu 611130,China;Animal Husbandry and Veteri nary Station in Xijiao area,Xichang 615000,China;Sichuan Litian Animal Husbandry Co.,Ltd,Dazhou 635000,China)

机构地区：[1]四川农业大学动物科技学院,四川成都611130 [2]四川省凉山州西昌市西郊片区畜牧兽医站,四川西昌615000 [3]四川省丽天牧业有限公司,四川达州635000

出　　处：《中国猪业》2022年第1期55-60,共6页China Swine Industry

基　　金：四川省重点研发项目(20ZDYF0003,2021YFYZ0030);国家现代农业产业技术体系四川生猪创新团队项目(SCSZTD-2021-09)。

摘　　要：我国是养猪大国,但生产效率相较于发达国家仍然相差很大,缩短母猪的繁殖周期是提高猪场综合生产效率和经济效益的有效手段。本文通过分析四川某种猪场包括大约克和长白猪的15665条繁殖数据,从母猪品种、公猪品种、配种季节和胎次等不同因素分析其对母猪妊娠期长短的影响,以及妊娠期长短对母猪产仔数的影响。结果表明,品种对母猪妊娠期有极显著影响(P<0.01),季节、胎次对母猪妊娠期有显著影响(P<0.05),春季母猪妊娠期最短,平均为114.06 d;第1胎时母猪的妊娠期最长,随后呈现缩短趋势,在第7胎最短,为114.04 d。妊娠期长短对总产仔数、产健仔数、仔猪初生窝重等均有影响。China was a big pig-raising country,but the production efficiency was still far behind that of developed countries.If you wanted to improve pig farms production efficiency and economic benefits,you could shorten the sow’s reproductive cycle.The article analyzed the littering data of 15 665 sows of York and Landrace pigs from a pig farm in Sichuan,and analyzed the impact on sows’ gestation period from the aspects of sow variety,boar breed,mating season and parity,and pregnancy on the length of period farrowing performance of the sow.The results showed that the breed had a very significant effect on the sow’s gestation period(P<0.01),and the season and parity had a significant effect on the sow’s gestation period(P<0.05).The gestation period of the sow in spring was the shortest,with an average of 114.06 days;the first litter of sows’ gestation period was the longest,following had a shortening trend,the shortest in the seventh pregnancy,114.04 days.The length of the gestation period had effect on the total litters,the healthy litters and the weight of newborn piglets litters.

关 键 词：妊娠期 产仔数 长白猪 大约克猪 季节 胎次 

分 类 号：S828[农业科学—畜牧学]