jibingzhongleifanduo，zhengzhuangfuza，zailinchuangshangchangyouxuduoxiangsibiaoxian。jiazhiyixiehebingzhengyouyoujiaofuzadebinglibianhua，yaoxiangbameiyizhongjibingzhenduanfenmingshufeiyishi。weilejishiduibingjijinxingjiuzhi，bixuyunyongzhengquedezhenduanfangfahejiqiaoduijibingzuochuzhenduan。

    問、看、聽、觸診斷法。問，就是詢問與發病有關的情況。即發病經過
，產蛋
、采食、飲水變化，發病數量和死亡情況、siliaozhiliangdeng。wendemudezaiyufaxianwenti。kan
，jiushitongguozhakanjiqunzhengtihegetizhuangkuangcongzhongfaxianwenti。ruoquntifeishizeweidabinglinzhao。ruoyicehuoshuangceyanjianzhongzhang、粘合，眼睛突出成“凸眼金魚”樣(yang)則(ze)為(wei)支(zhi)原(yuan)體(ti)病(bing)。若(ruo)胸(xiong)腹(fu)和(he)兩(liang)腿(tui)內(nei)側(ce)皮(pi)下(xia)浮(fu)腫(zhong)青(qing)紫(zi)則(ze)為(wei)葡(pu)萄(tao)球(qiu)菌(jun)病(bing)。若(ruo)病(bing)雞(ji)蹲(dun)伏(fu)地(di)麵(mian)或(huo)棲(qi)架(jia)之(zhi)上(shang)
，頭(tou)頸(jing)前(qian)伸(shen)用(yong)力(li)張(zhang)口(kou)吸(xi)氣(qi)則(ze)為(wei)喉(hou)氣(qi)管(guan)炙(zhi)。其(qi)它(ta)如(ru)冠(guan)冉(ran)蒼(cang)白(bai)
、羽毛鬆亂、排(pai)稀(xi)便(bian)等(deng)幾(ji)乎(hu)是(shi)所(suo)有(you)病(bing)雞(ji)都(dou)有(you)的(de)共(gong)同(tong)症(zheng)狀(zhuang)

，診(zhen)斷(duan)時(shi)不(bu)要(yao)將(jiang)此(ci)作(zuo)為(wei)診(zhen)斷(duan)的(de)根(gen)據(ju)。聽(ting)
，就(jiu)是(shi)用(yong)耳(er)朵(duo)聽(ting)雞(ji)群(qun)的(de)聲(sheng)音(yin)變(bian)化(hua)。如(ru)大(da)蛋(dan)難(nan)產(chan)阻(zu)塞(sai)輸(shu)卵(luan)管(guan)下(xia)部(bu)引(yin)起(qi)陣(zhen)痛(tong)，常(chang)發(fa)出(chu)尖(jian)銳(rui)叫(jiao)聲(sheng)

；雞新城疫常聽到“咯咯”叫jiao聲sheng。觸chu

，就jiu是shi用yong手shou觸chu摸mo病bing雞ji的de一yi定ding部bu位wei來lai感gan覺jiao診zhen斷duan病bing之zhi所suo在zai。如ru對dui一yi些xie老lao齡ling病bing雞ji或huo長chang期qi冠guan冉ran蒼cang白bai雞ji，用yong手shou觸chu摸mo其qi腹fu部bu，常chang可ke觸chu到dao腹fu腔qiang有you腫zhong瘤liu存cun在zai。

    剖(pou)檢(jian)診(zhen)斷(duan)法(fa)。剖(pou)一(yi)見(jian)百(bai)，選(xuan)擇(ze)有(you)典(dian)型(xing)臨(lin)床(chuang)症(zheng)狀(zhuang)的(de)病(bing)雞(ji)或(huo)死(si)雞(ji)數(shu)隻(zhi)進(jin)行(xing)剖(pou)檢(jian)，能(neng)幫(bang)助(zhu)了(le)解(jie)全(quan)群(qun)病(bing)雞(ji)發(fa)病(bing)情(qing)況(kuang)。不(bu)同(tong)的(de)病(bing)原(yuan)菌(jun)入(ru)侵(qin)機(ji)體(ti)之(zhi)後(hou)，都(dou)可(ke)選(xuan)擇(ze)性(xing)地(di)破(po)壞(huai)某(mou)些(xie)器(qi)官(guan)的(de)正(zheng)常(chang)功(gong)能(neng)
，並(bing)在(zai)其(qi)受(shou)害(hai)器(qi)官(guan)上(shang)表(biao)現(xian)出(chu)不(bu)同(tong)的(de)病(bing)理(li)變(bian)化(hua)。再(zai)結(jie)合(he)臨(lin)床(chuang)特(te)征(zheng)進(jin)行(xing)跟(gen)蹤(zong)追(zhui)查(zha)更(geng)有(you)助(zhu)於(yu)確(que)切(qie)診(zhen)斷(duan)。如(ru)剖(pou)檢(jian)腺(xian)胃(wei)粘(zhan)膜(mo)水(shui)腫(zhong)，乳(ru)頭(tou)頂(ding)端(duan)或(huo)乳(ru)頭(tou)間(jian)出(chu)血(xue)或(huo)潰(kui)瘍(yang)、壞死
，盲腸扁桃體腫大出血壞死，又見生前常發“咯咯”叫聲，即可懷疑為雞新城疫。如剖檢肺、氣囊
、胸腹腔漿膜上有大小不等的黴菌結節，氣囊膜變厚渾濁
，又見病前有喂發黴變質飼料史，即可懷疑為雞曲黴菌病等。

    流行病學診斷法。就是根據疾病發生過程、發fa病bing死si亡wang情qing況kuang，從cong中zhong找zhao出chu規gui律lv性xing的de東dong西xi。如ru病bing原yuan體ti毒du力li有you強qiang有you弱ruo
，入ru侵qin機ji體ti後hou，其qi發fa病bing過guo程cheng有you急ji有you緩huan，發fa病bing率lv和he死si亡wang率lv有you高gao有you低di，往wang往wang區qu別bie明ming顯xian。一yi般ban說shuo
，病bing毒du性xing疾ji病bing發fa病bing率lv和he死si亡wang率lv高gao，流liu行xing廣guang。雞ji霍huo亂luan發fa病bing急ji，常chang在zai夜ye間jian突tu然ran死si亡wang
，在zai雞ji群qun表biao現xian常chang為wei散san發fa性xing。傳chuan染ran性xing法fa氏shi囊nang炎yan潛qian伏fu期qi短duan，傳chuan播bo速su度du快kuai。雞ji痘dou有you明ming顯xian季ji節jie性xing。雞ji白bai痢li主zhu要yao發fa生sheng在zai小xiao雞ji。

    投“石”問wen路lu診zhen斷duan法fa。就jiu是shi在zai一yi時shi尚shang難nan準zhun確que判pan斷duan病bing性xing前qian提ti下xia試shi投tou某mou種zhong藥yao物wu進jin行xing治zhi療liao性xing診zhen斷duan的de一yi種zhong方fang法fa。如ru投tou服fu抗kang菌jun藥yao物wu後hou效xiao果guo不bu明ming顯xian，多duo為wei病bing毒du性xing疾ji病bing。

    congpinzhongnianlingjiaoduzhenduan。mouxiejibingduibutongpinzhongyouyiganxing，zheshilinchuangshangchangjiandexianxiang

，rubendipinshiyingxingkangbingxingqiangbuyihuanbing
，eryinjinpinzhongjiuchaduole。rubailuokejiyishoumalikeshibingdugongji，erbendijijiuxiangduiqingwei。yibanshuo，youjikangbinglidiyuchengji，ruqiuchongbing
、雞白痢等對幼雞危害極大而成雞則多為陰性感染。

    yishangwugefangmianjutiyunyongshiyaozhuyikaolvgezhongfangfadexiangfuxiangcheng，yaoshanyuronghuiguantong。yibannengyongyizhongzhenduanfangfajiejuedewenti，jiubuyaobasuoyoudezhenduanfangfadouyongshang
，yimianyinqizhenduanwenluanerzhuabuzhuzhongdian。youshihouxuyaoliangzhonghuoduozhongzhenduanfangfaxianghupeiheshiyong。ruhaiyouyixiehebingzhengheyinanzheng，tongguozonghezhenduanrengbunengquezhenshizexusonghuayanshizuojinyibuzhenduan。