How to prevent the pig farm from CSF invasion
2019
Ito, M. (Akabane Animal Clinic, Co. Ltd. (Japan))
Classical swine fever (CSF) reemerged in Gifu prefecture in Japan on September 2018. It is suspected that the initial case was caused to wild boar through pork products contaminated with CSFV brought by foreign tourists. After the first confirmation of the outbreak, 51 cases of CSF in domestic pigs as well as more than two thousands notifications in wild boar have reported in 12 prefectures at the end of December 2019. Taking into account that the notifications have reported continuously in the affected area, there's a possibility that the disease spreads more widely. It is believed that the current epidemics of CSF has spread through contacts between domestic pigs and wild boar. As the farm biosecurity play an important role in terms of prevention of the disease invasion, questionnaire study was conducted to 232 pig farms in 25 prefectures to understand the current situation of farm biosecurity level and to find the critical factors for disease control. The results of questionnaire showed that most of farms have implemented adequate vehicle disinfection, and clothing and boot changes in farms and pig pens, however, small farmers tend to neglect these rules. More than 60% of farmers feed “eco-feed” to pigs, and most of these materials didn’t include pig meats. However, it was found that almost all feeds were fed with insufficient heat treatment. In terms of the prevention of wild animal invasion, some of farms set bird net, but only few farmers set wire-mesh fence for wild boar. The vaccination program against CSF for domestic pigs has begun on October 2019. In addition to the control of wild boar movement, prevention of the disease invasion to the farm is another key factor. The results of present study should be useful to review the current farm biosecurity.
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