zaizhushenghouduosuoshiyizhongxiantianxingzhenchanzheng。zaizhuxiantianxingzhenchanshiyouchangqicunzaiyuziranjiedexiantianzhenchanbingduyinqidezaizhuyuchengzhangaidechuanranbing。benbingzhuyaofashengzaichushengbujiudezaizhu,yisizhi、頭部或全身發生有節奏的震顫為臨床特征,通常早期出生的症狀比較重,而後期出生的症狀比較輕微。成年豬呈隱性感染或慢性感染。
一、流行特點:本病的傳播方式為垂直傳播,僅感染豬,不同品種及其雜交後代均具有同樣的易感性;其發生無明顯季節性;初產母豬多發生,經產母豬極少發生;分娩過感染仔豬的母豬以後所產幾窩仔豬通常都不發病。呈散發性,每次流行的致死率為10-30%,每胎仔豬的致死率為0-100%;康複豬常成為帶毒者,種公豬可被患病母豬感染為傳播者。
二、臨床症狀:renshenmuzhuwurenheyichangbiaoxian,erxinshengzaizhuzaigangfenmianzhijixiaoshihouchuxianzhenchan,banyouhouzhiwuli,gongjishitiao,yiwozaizhuzhongbufenhuoquanbufabing,danqingzhongchengdugeyouchayi,yibanbufenfabingzhezhengzhuangjiaoqing。quanbufabingzhezhengzhuangjiaozhong。zhenchanchengduoyangxingdewudaodongzuo;並(bing)且(qie)震(zhen)顫(chan)是(shi)持(chi)續(xu)性(xing)的(de),臥(wo)地(di)時(shi)震(zhen)顫(chan)頻(pin)率(lv)減(jian)少(shao),而(er)睡(shui)眠(mian)時(shi)震(zhen)顫(chan)停(ting)止(zhi),但(dan)站(zhan)起(qi)後(hou)又(you)震(zhen)顫(chan),前(qian)肢(zhi)震(zhen)動(dong)劇(ju)烈(lie)的(de)仔(zai)豬(zhu)常(chang)呈(cheng)犬(quan)坐(zuo)式(shi),病(bing)仔(zai)豬(zhu)行(xing)動(dong)困(kun)難(nan)無(wu)法(fa)吃(chi)奶(nai);受噪音、驚嚇、寒泠、興奮等刺激時加重。病程因豬而異,輕的常於2-8周恢複正常,重的常因震顫劇烈或四肢麻痹、jingluan,burukunnanesihuoyinyundongzhangaibeimuzhuyasi。zhenchanxiaoshidezaizhuzaixingfenhuoyingjidetiaojianxia,rengkezaifabing,huanzhuzaishenghouyizhouhuozhedeyibanyuhoulianghao。
三、病理剖檢:病(bing)死(si)仔(zai)豬(zhu)剖(pou)檢(jian)時(shi)無(wu)明(ming)顯(xian)眼(yan)觀(guan)變(bian)化(hua),對(dui)神(shen)經(jing)係(xi)統(tong)作(zuo)組(zu)織(zhi)學(xue)檢(jian)查(zha)時(shi)在(zai)中(zhong)樞(shu)神(shen)經(jing)係(xi)統(tong)見(jian)有(you)髓(sui)鞘(qiao)形(xing)成(cheng)不(bu)全(quan),小(xiao)腦(nao)發(fa)育(yu)不(bu)全(quan),腦(nao)血(xue)管(guan)周(zhou)圍(wei)間(jian)隙(xi)特(te)別(bie)是(shi)腦(nao)基(ji)部(bu)充(chong)血(xue),出(chu)血(xue)等(deng)病(bing)變(bian)。
四、鑒別診斷:根據分娩後新生仔豬呈特征性的持續震顫或痙攣,震顫消失時同健康豬。可作出初步診斷。類症鑒別須注意與低血糖症,豬瘟、偽狂犬病,豬細小病毒,乙型腦炎等引起的死胎和產後不久出現神經症狀而死亡的仔豬病相區別。
五、防治措施:benbingshangwuyouxiaoyimiaohetexiaoliaofa。yufangbenbingzhuyaoyikaoyibanxingdeweishengfangyicuoshi,bucongyoubenbingdezhuchangyinjinmuzhu,fangzhigezhongyingjixingciji,zaizhuchibudaoshimurushi,yidingyaojinxingrengongfuzhuchinaihuorengongburu,zheyangkeshiduoshubingzaizhuzirankangfuerjianshaosiwang。
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