bingyinyangbiyingshiyouyangbiyingdeyouchongjishengzaiyangdebiqiangsuoyinqidejibing,zhuyaoweihaimianyang。yangbiyingdechengchongzhijiechanchuyouchong,youchongjingyongbianweichengchong。yangbiyingchengchongmeinian5~9yuechuxian。cixiongjiaopeihou,xiongyingsiwang,ciyingqixi,daitineiyouchongfayuhoucaifeixianghuodong,zaiyangbikongneichanquzishengyouchong。diyiqiyouchongfuzaiyangbiqiangnianmoshang,bingzhujianxiangbineiyixing,zhibiqiang、edouneituihuabianweidierqiyouchong,daodiernianchuntian,fayuweichengshudedisanqiyouchong。youchongdehuodongcijiyangdapenti,chengshudeyouchongbeipenchuluodaodimian,zuanruturanghuofenneibianyong,yongqi1~2個月,再羽化為成蟲。
症狀病羊騷動不安,搖頭,噴鼻,低頭,鼻黏膜腫脹、出血、發炎,運動失調,轉圈,扭頭,最後食欲廢絕,陷於衰竭而死亡。
防治一、用40%的敵敵畏乳劑氣霧熏殺幼蟲,室內每立方米空間用藥1毫升。方法:在燒熱的鐵鍁或鐵器上潑敵敵畏乳劑,待濃煙冒起,讓病羊吸10~15分鍾。二、夏秋季節用3%的來蘇兒溶液噴射病羊鼻孔。三、用碘醚柳胺按羊每公斤體重60毫克的量一次口服。四、用0.1%的畜衛佳按羊每公斤體重0.3克的量拌在飼料中一次喂羊。五、在羊鼻蠅流行季節,給羊鼻孔周圍塗敵百蟲油膏(用2%的精製敵百蟲,拌廢機油或其他油劑、油膏製成)。