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2019-08-14 | 公共電視

18,000 Chickens Culled Following H5N2 Outbreak|彰化傳禽流感疫情 近2萬隻土雞遭撲殺

After Typhoon Lekima left Taiwan, the southwest airflow arrived in central and southern Taiwan. It has been raining many consecutive days in Changhua County, which sent temperatures falling. Free-range chickens have caught colds and another free-range chicken farm has fallen prey to Influenza A virus subtype H5N2. All 18,000 of its free-range chickens have been culled. This is the 12th farm to suffer a H5N2 outbreak in Changhua County this year and the Changhua County Animal Disease Control Center continues to step up prevention efforts.

Changhua County Animal Disease Control Center workers remove sacks of dead chickens from a farm in Changhua County's Dacheng Township. The farm owner reported unusual deaths on the 10th and tests for Influenza A virus subtype H5N2 came back positive on the 13th.

So, we immediately sent personnel to take samples and sent them in to the Animal Health Research Institute for testing. Following confirmation on (Aug. 13), we culled a total of 18,030 free-range black-feathered chickens.

This is the 12th Changhua farm to suffer a bird flu outbreak this year. The center says in this case, lower pre- and post-typhoon temperatures along with consecutive days of heavy rain caused by the southwest airflow may have weakened the immunity of livestock.

…which caused the immunity of the chickens to go down and made them more susceptible to infection. Before typhoons come, it is probably muggier. Sometimes, there is heavy rain. There may therefore be greater temperature variation. If farms are not managing air circulation and temperature properly, it puts the livestock under stress. This in turn makes it easier for them to get sick.

The center says bird flu outbreaks usually occur between September and the following April, but H5N2 outbreaks can occur any time of the year. For now, it is sterilizing farms. With the southwest airflow raising the likelihood of further rain in the coming week, the center is also calling on farms to take proper preventive measures.

動防所人員將一隻隻死亡的土雞裝袋,這是位於彰化縣大城鄉的一處土雞場,8月10號接獲業者的通報,雞場內發現有雞隻異常死亡,動防所人員採樣後送驗,13號確定感染H5N2亞型高病原性禽流感病毒。

彰化縣動防所所長 董孟治表示:「那我們馬上派同仁去採樣,並將檢體送到家衛所去檢驗,那昨天確認之後,就進行撲殺的工作,總共撲殺了1萬8030隻的黑羽土雞。」

彰化縣動防所表示,這是彰化縣今年第12場感染禽流感的禽場,研判是因為颱風前後過氣溫變化大,加上西南氣流讓彰化地區連下多日大雨,才會讓雞隻免疫力下降、感染禽流感。

彰化縣動防所所長 董孟治表示:「因為這個颱風來之前,大概天氣會比較悶熱,那有時候又會有一些強降雨,所以整個在氣溫的變化上,會比較急遽,那所以在禽場的管理上,如果沒有做好通風的管理,或者是說降溫的設備的話,會造成禽隻的這種緊迫,那當然在緊迫的狀況下,牠就容易有些疾病的發生。」

動防所強調,以往的禽流感都發生在9月到隔年4月、氣溫較低的月分,但H5N2禽流感病毒是全年都會好發,目前除了協助業者加強場區的消毒,也呼籲養禽業者,未來一週受到西南風影響,中南部地區仍有短時強降雨的機率,應該要做好相關防疫措施。

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