目前許多養雞戶反映免疫效果不盡如人意，造成很大損失。出現這些情況不僅僅是因超強毒株存在
、疫苗質量差，還與他們接種疫苗時存在的一些問題有關。  

　　稀釋疫苗時加入抗菌藥物  

　　部(bu)分(fen)養(yang)雞(ji)戶(hu)在(zai)使(shi)用(yong)病(bing)毒(du)性(xing)疫(yi)苗(miao)對(dui)雞(ji)進(jin)行(xing)滴(di)鼻(bi)，點(dian)眼(yan)，注(zhu)射(she)
，接(jie)種(zhong)免(mian)疫(yi)時(shi)
，習(xi)慣(guan)在(zai)稀(xi)釋(shi)疫(yi)苗(miao)的(de)同(tong)時(shi)加(jia)入(ru)抗(kang)菌(jun)藥(yao)物(wu)，認(ren)為(wei)抗(kang)菌(jun)藥(yao)對(dui)病(bing)毒(du)沒(mei)有(you)傷(shang)害(hai)
，還(hai)能(neng)起(qi)到(dao)抗(kang)菌(jun)、kangganrandezuoyong。xuzhi，youyukangjunyaowudejiaru，shixishiyedesuanjiandufashengbianhua，yinqiyimiaobingdushihuo，xiaolixiajiang，congerdaozhimianyishibai。yinci，buyingzaixishiyimiaoshijiarukangjunyaowu。  

　　接種途徑選擇不當  

　　免疫接種的途徑取決於相應疾病病原體的性質及入侵途徑。全嗜性的可用多渠道接種；shihuxidaodeyongdibidefangfajiezhong，ruosuibiangaibianjiezhongtujingjiuhuiyingxiangmianyixiaoguo。rujidouyimiaoyimojiezhongxiaoguojiaohao，yinweijidoubingduduipifuhenianmoshangpixibaojuyouteshudeqinheli
，keyouxieyangjihuchangchangcaiyongjizhudefangfajiezhong
，zheyangmianyixiaoguobujia。

　　盲目地聯合應用疫苗  

　　duozhongyimiaotongshishiyonghuozaixiangjindeshijianjiezhongshi

，yingzhuyiyimiaojiandexianghuganrao。yinweiduozhongyimiaojinrujitihou，qizhongdeyizhonghuojizhongkangyuansuochanshengdemianyichengfen，kebeilingyizhongkangyuanxingzuiqiangdechengfenchanshengdemianyifanyingsuozhegai
；yimiaobingdujinrujitineihou

，zaifuzhiguochengzhonghuichanshengxianghuganraozuoyong。rutongshijiezhongjidouyimiaohexinchengyiyimiao，liangzhejianhuixianghuganrao
，daozhimianyishibai。zairuchuanranxingzhiqiguanyanbingduduixinchengyibingduyouganraozuoyong，ruozheliangzhongyimiaojiezhongshijiananpaibuheli

，huishixinchengyiyimiaodemianyixiaoguoshoudaoyingxiang。 

　　忽視應激及免疫抑製因素的影響  

　　接(jie)種(zhong)疫(yi)苗(miao)雖(sui)然(ran)是(shi)防(fang)疫(yi)措(cuo)施(shi)中(zhong)的(de)一(yi)個(ge)不(bu)可(ke)缺(que)少(shao)的(de)環(huan)節(jie)，但(dan)無(wu)論(lun)采(cai)取(qu)哪(na)種(zhong)途(tu)徑(jing)進(jin)行(xing)接(jie)種(zhong)，對(dui)雞(ji)都(dou)是(shi)一(yi)種(zhong)應(ying)激(ji)因(yin)素(su)。若(ruo)在(zai)接(jie)種(zhong)疫(yi)苗(miao)的(de)同(tong)時(shi)或(huo)在(zai)相(xiang)近(jin)的(de)時(shi)間(jian)內(nei)進(jin)行(xing)斷(duan)喙(hui)，轉(zhuan)群(qun)

，換(huan)料(liao)等(deng)操(cao)作(zuo)，則(ze)會(hui)加(jia)重(zhong)雞(ji)的(de)應(ying)激(ji)反(fan)應(ying)
，致(zhi)使(shi)免(mian)疫(yi)失(shi)敗(bai)。為(wei)了(le)降(jiang)低(di)接(jie)種(zhong)疫(yi)苗(miao)時(shi)雞(ji)的(de)應(ying)激(ji)反(fan)應(ying)，可(ke)在(zai)接(jie)種(zhong)疫(yi)苗(miao)的(de)前(qian)一(yi)天(tian)使(shi)用(yong)維(wei)生(sheng)素(su)C、維生素K、duozhongweishengsuhuomianyizengqiangjidengyaopinbanliaohuoyinshuitoufu。jiezhongyimiaohou
，yaojiaqiangsiyangguanli
，yimianyinjishewenduguogaohuoguodi
，jiqunyongji，tongfengbuliangdengbuliyinsuyizhijitidetiyemianyihexibaomianyi，daozhiyimiaodebaohulixiajiang。  

　　免疫接種工作失誤或不認真  

　　滴鼻，點眼時疫苗尚未滴入眼內或鼻內就將雞放下
，造成沒有足夠的疫苗進入眼內或鼻內
；捉雞時行為粗暴，雞應激嚴重；漏防的雞過多；注射免疫時，針頭消毒不嚴

、不更換

，汙染了細菌或病毒

；飲yin水shui免mian疫yi時shi，疫yi苗miao的de濃nong度du配pei製zhi不bu當dang，疫yi苗miao的de稀xi釋shi和he分fen布bu不bu勻yun，用yong水shui量liang過guo多duo雞ji一yi時shi喝he不bu完wan，或huo用yong水shui量liang過guo少shao使shi有you些xie雞ji尚shang未wei飲yin到dao等deng，所suo有you這zhe些xie都dou會hui嚴yan重zhong影ying響xiang免mian疫yi效xiao果guo。