畜牧与兽医2024，Vol.56Issue(8)：104-111,8.
基于内生转换模型的养猪场生物安全防控效果研究
Effect of biosecurity control in pig farms based on endogenous switching regression model
摘要
Abstract
In order to understand the level of biosecurity prevention and control in Chinese pig farms and evaluate the effect of biosecurity prevention and control,a survey was conducted in 723 pig farm in 12 provinces in the country.Based on the survey data,an evaluation sys-tem was constructed to quantify the level of biosecurity prevention and control in sample pig farms,the status quo of biosecurity prevention and control in each link of pig farms was analyzed,and an endogenous switching regression model was used to correct sample selection bias.The purpose was to investigate the effect of biosecurity level on the number of dead pigs in pig farms.The results showed that China's pig farms had gradually carried out biosecurity prevention and control,but the overall level was not high.Some links perform poorly,and the po-larization was obvious.Higher biosecurity level can significantly reduce the number of sick and dead pigs in pig farms.According to the calcu-lation of the average treatment effect,raising the biosecurity level from low to high would reduce the number of dead pigs by 15.147 to 100.209,and the fatality rate of pigs would decrease by 1.125% to 2.732%.This paper verified that biosecurity prevention and control in pig farms would produce a significant effect on preventing pig death from diseases.关键词
养猪场/生物安全防控/病死猪数量/内生转换模型Key words
pig farm/biosecurity prevention and control/the number of dead pigs/ESRM分类
管理科学引用本文复制引用
王子权,翟新验,张倩,魏巍,刘玉梅..基于内生转换模型的养猪场生物安全防控效果研究[J].畜牧与兽医,2024,56(8):104-111,8.基金项目
中国动物疫病预防控制中心动物疫病区域净化技术集成创新研究项目(CADC2022302) （CADC2022302）
