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《Chinese Journal of Animal Science》 2019-01
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Research Progress on Factors Affecting Sows' Duration of Farrowing

LIU Yi-bing;ZHANG Qiu-xi;XING Kai;WANG Chu-duan;College of Animal Science and Technology, China Agricultural University;Animal Health Inspection of Fengnan District,Tangshan City, Hebei Province;College of Animal Science and Technology, Beijing University of Agriculture;  
The duration of farrowing is one of the important reproductive traits of sows, and has a great influence on economic traits such as other farrowing traits. Long duration of farrowing may lead to increased stillbirth rates, decreased vitality of newborn piglets, and for sows, more susceptible to disease. However, in the modern environment of large-scale pig production, the problem of sows' long duration of farrowing is widespread. Therefore, this article summarizes the research results of domestic and foreign scholars on the duration of farrowing in recent years, and puts forward seven factors that have great impacts on that. Furthermore, I search possible methods to shorten the farrowing in order to reduce the pig producers' loss caused by the long duration of farrowing of sows.
【Fund】: 国家重点研发计划资助(2018YFD0501000);; 生猪产业技术体系北京市创新团队(BAIC02-2018)
【CateGory Index】: S828
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1 XIE Xiao-xian,WANG Qi-shan,HE Kan,CHEN Zhen-liang,MA Yu-fang,PAN Yu-chun(School of Agriculture and Biology,Shanghai Jiaotong University,Shanghai 200240,China);The Research Progress in the Physiological Structure and Hereditary Factors Influencing the Reproduction Performance of Meishan Pig[J];畜牧兽医学报;2012-03
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1 ZHOU Yan-hong;FU Yan-feng;ZHAO Wei-min;LIU Hong-lin;REN Shou-wen;College of Animal Science and Technology,Nanjing Agricultural University;Institute of Animal Science,Jiangsu Academy of Agricultural Sciences / Laboratory of Animal Improvement and Reproduction;;Coding sequence cloning and bioinformatics analysis of Ephrin A1 during embryo implantation in Meishan swine[J];江苏农业学报;2015-02
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