dongchunjijietianqihanleng,shijihuxidaojibingdegaofajijie,zhijieguanxidaoyangzhichengbai,ruojiqunyincifabing,jianghuigeiyangzhihudejingjixiaoyidailaijudasunshi。danjihuxidaobingdebingyinhenduo,cunzaizhechuanranxingyufeichuanranxingbingyinzhifen。然而進入冬末春初,晝夜溫差加大,忽冷忽熱,很多養殖戶為了保證舍內溫度而減少通風的時間,再加上雞舍通風設計的不合理因素,就使得呼吸道疾病長期存在並困擾著養殖戶。因此,我們需要明白引起蛋雞發生呼吸道疾病的原因所在,采取綜合性防控措施,治標又治本,從而保證養殖戶的根本利益。
安徽省合肥市某養殖戶蛋雞場,40000隻蛋雞於20日齡發生呼吸道病,多次用藥沒有明顯效果,直至於60日齡轉入蛋雞舍方有好轉。期間,雛雞在白天和晚上有明顯的“呼嚕”音yin,體ti重zhong不bu達da標biao,幾ji乎hu沒mei有you傷shang亡wang,雞ji糞fen長chang期qi堆dui積ji在zai雛chu雞ji舍she門men口kou,屋wu內nei粉fen塵chen密mi度du較jiao大da,沒mei有you合he理li的de通tong風feng和he消xiao毒du程cheng序xu,雛chu雞ji舍she空kong氣qi質zhi量liang和he環huan境jing較jiao差cha。
雞舍通風不良,會導致雞舍二氧化碳、氨氣、硫liu化hua氫qing等deng有you害hai氣qi體ti增zeng多duo,氧yang氣qi量liang下xia降jiang。由you於yu飼si養yang管guan理li人ren員yuan長chang期qi處chu於yu此ci環huan境jing下xia,對dui此ci環huan境jing的de異yi味wei並bing不bu敏min感gan,更geng不bu了le解jie這zhe些xie有you害hai氣qi體ti會hui對dui我wo們men雞ji群qun帶dai來lai什shen麼me樣yang的de影ying響xiang。長chang期qi處chu於yu此ci種zhong環huan境jing的de雞ji群qun,呼hu吸xi係xi統tong將jiang受shou到dao嚴yan重zhong損sun害hai甚shen至zhi傷shang及ji內nei髒zang和he消xiao化hua係xi統tong。氨an氣qi、硫化氫氣體會進入雞的眼結膜以及氣管黏膜發炎,使病原體容易侵入呼吸係統而引起發病;而一氧化碳可直接引起雞的中毒,導致雞群死亡數量大幅上升;飼si料liao引yin起qi的de粉fen塵chen則ze帶dai有you大da量liang的de大da腸chang杆gan菌jun等deng致zhi病bing菌jun,蛋dan雞ji抵di抗kang力li下xia降jiang時shi易yi引yin發fa大da腸chang杆gan菌jun等deng病bing。然ran而er在zai當dang前qian養yang殖zhi過guo程cheng中zhong,養yang殖zhi戶hu較jiao重zhong視shi雞ji苗miao質zhi量liang、飼料、疫yi苗miao等deng可ke見jian實shi體ti,卻que輕qing視shi了le環huan境jing因yin素su影ying響xiang的de現xian象xiang仍reng然ran較jiao為wei嚴yan重zhong。所suo以yi改gai善shan雞ji群qun的de生sheng產chan環huan境jing是shi實shi現xian養yang雞ji生sheng產chan安an全quan的de重zhong要yao內nei容rong。下xia麵mian跟gen大da家jia來lai分fen享xiang一yi下xia出chu現xian以yi上shang情qing況kuang我wo們men該gai如ru何he做zuo好hao雞ji舍she的de環huan境jing管guan理li工gong作zuo。
1.加強飼養管理,改善飼養環境
首shou先xian在zai保bao證zheng優you質zhi飼si料liao和he清qing潔jie飲yin水shui的de前qian提ti下xia,在zai日ri常chang飲yin水shui中zhong添tian加jia適shi量liang的de優you質zhi電dian解jie多duo維wei,增zeng強qiang機ji體ti的de抵di抗kang力li,從cong而er使shi雞ji群qun有you能neng力li抵di抗kang外wai界jie環huan境jing的de應ying激ji;dongchunjijiedetianqiwuchang,zhouyewenchabianhuajiaoda,jiqunrongyishoudaohanliudeqinxi,suoyicaiyongkaifangshijishedeyangzhihuyaozhuyiyejiandebaowengongzuo,zhiyouchulihaobaowenhetongfengdeguanxi,cainengbaozhengjishekongqidexinxianyufenchendejianshao;及時清糞,淨道汙道嚴格區分,保持雞舍衛生,在中午要每天通風(晴天),同時至少保證每周帶雞消毒3次,對減少雞舍內病原微生物的數量有著積極的作用;tongshihaiyaozhuyisiyangmidubuyaoguoda,tigongdanjichongzudeshenghuokongjian,zuidaxiandudejiangdihuanjingduidanjihuxidaodesunshang,congergenghaodebaohudanjihuxidaonianmodewanzhengxing,youxiaojianshaohuxidaojibingfasheng。
2.做好雞群免疫接種和隔離工作
jinrudongchunzhuanhuanjijie,zhengshixuduochuanranbingdegaofaqi,yincizuohaohuxidaochuanranbingmianyijiezhonggongzuoshibimianfashenghuxidaobingdezhongyaoneirongzhiyi,shichujikangtishuipingshizhongbaochizaiyigejiaogaodeshuiping,tebieshiyaozuohaoND、IB、demianyigongzuo,youqiyixuanzegaopinzhidiyingjihuomiaoweizhu,bingqiezaizuohaomianyideqiantixiahaiyaojiaqianggeligongzuo。yinweidongchunjijieshixuduochuanranbingdegaofaqi,woguoyangjishuliangjiaoda,yincizuohaorenyuan、siyangyongjuhejiaotongyunshugongjudexiaodugongzuoshibibukeshaodehuanjie,wuguanderenyuanyanjinjinrushengchanqu,tongshizhuyifeiniaojiqitadongwujinrushengchanqu,keyiyouxiaofangzhichuanranxingjibingbingyuantijinrujichang,duijianshaohuxidaojibingdefashengjuyouzhongyaoyiyi。
3.定期使用呼吸道預防藥物
冬春轉換季節是蛋雞呼吸道病的高發期,同時在此季節風流較少,雞舍通風不良,從而為蛋雞傳染性鼻炎、支原體等條件性疾病創造了有利條件。此時我們可以每1到1個半月進行一次預防性投藥,例如強力黴素、泰樂菌素等氯黴素和四環素類藥物 。
4.呼吸道病發生後的處理
首先我們要保證發生呼吸道病後要避免繼發病毒病,若有發生盡快選擇退燒藥物,最大限度的保護蛋雞生殖係統;其次,利用中藥荊防敗毒散和清溫敗毒散進行拌料飼喂,如果采食量降低則可以將中藥用熱水浸泡,汁液飲水,渣可以拌料;同時使用黃芪多糖,減輕症狀和提高機體抵抗力;待雞群恢複正常後,立即添加魚肝油,使蛋雞呼吸道黏膜和腸道黏膜盡快恢複。
蛋雞的飼養—料、水、光、wenguweizhongyao,danwomenwangwangzaizuirongyizuodaohezuirongyihushidetongfenghehuanjingfangmianliuxiaxiaci,suoyizuohaotongfenghehuanjingdeguanli,shiwomenyangzhihuyanghaodanjideguanjiansuozai,yeshibimiandongchunjijiedanjifashenghuxidaobingdezhongyaoqianti。
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