秋qiu冬dong季ji氣qi候hou變bian冷leng,而er舍she內nei需xu要yao的de溫wen度du與yu外wai界jie氣qi溫wen相xiang差cha懸xuan殊shu,既ji要yao通tong風feng換huan氣qi,又you要yao保bao持chi舍she內nei溫wen度du,這zhe就jiu是shi冬dong季ji應ying解jie決jue的de主zhu要yao問wen題ti。在zai通tong風feng換huan氣qi的de同tong時shi,注zhu意yi不bu要yao造zao成cheng舍she內nei溫wen度du忽hu高gao忽hu低di,嚴yan防fang由you於yu溫wen差cha過guo大da造zao成cheng應ying激ji反fan應ying引yin起qi疾ji病bing,通tong風feng口kou以yi高gao於yu雞ji背bei上shang方fang1.5米以上為宜。當氣溫急劇下降,防寒保溫工作跟不上時,往往易使肉雞外感風寒,發生咳嗽、噴嚏、呼吸困難等症狀為特征的呼吸道疾病。
雞舍要維修好,防止賊風、穿堂風侵襲雞群。平地飼養的肉雞群要加厚墊料,利用墊料來提高室內溫度。要勤換墊料,中午開窗通風。一般情況,6日齡開始通風,並隨日齡增加加大通風量,使雞群有足夠的氧氣。雛雞入舍前3天,將舍內溫度控製在34.5-35℃。雞入舍後,升溫1-2℃,第1周溫度在35-36℃為佳,此時雞隻狀態佳,精神活潑,分布均勻,活動自由,飲食正常。同時,應注意雞隻的變化並及時進行調溫,若雞隻聚群、“嘰嘰”顫叫、縮頭等,說明溫度過低,應提高舍內溫度;若出現張口喘氣、頻繁喝水等,說明溫度過高,應降低舍內溫度。在2周齡時降到30-32℃,在3周齡時降到26-28℃,再用1周時間降到恒定溫度23℃。
訣竅二:謹防氨氣蓄積
秋qiu冬dong季ji,常chang常chang由you於yu雞ji群qun排pai泄xie的de糞fen便bian和he潮chao濕shi的de墊dian料liao未wei能neng及ji時shi清qing除chu,致zhi使shi雞ji舍she內nei氨an氣qi蓄xu積ji,濃nong度du增zeng大da,導dao致zhi肉rou雞ji氨an氣qi中zhong毒du或huo引yin發fa其qi他ta疾ji病bing。因yin舍she內nei氨an氣qi蓄xu積ji,氧yang氣qi相xiang對dui缺que乏fa,加jia上shang天tian氣qi寒han冷leng,雞ji的de代dai謝xie率lv增zeng高gao,對dui於yu生sheng長chang快kuai速su的de肉rou雞ji,容rong易yi引yin發fa腹fu水shui綜zong合he征zheng。為wei了le防fang止zhi氨an氣qi對dui肉rou雞ji的de不bu良liang影ying響xiang,建jian議yi養yang雞ji場chang(戶)抓好下述飼養管理工作:鋪設的墊料要有一定的厚度,一般在5厘米以上;操作時盡量減少灑水,防止水槽漏水,弄濕墊料;如果雞舍內濕度過大,則應及時清除舍內糞便及潮濕的墊料。此外,可使用吸氨除臭劑來降低雞舍的氨氣濃度,常用的有硫酸亞鐵、過磷酸、硫酸銅、熟石灰之類。
訣竅三:強化飼養管理
1.科學管好新進雛。進雛前對雛舍進行嚴格的衝刷、消毒、熏蒸。用具、衣帽、房fang舍she等deng徹che底di清qing洗xi。由you於yu肉rou雛chu雞ji生sheng理li特te點dian的de需xu求qiu,入ru舍she後hou,先xian飲yin水shui後hou開kai食shi,尤you其qi長chang距ju離li運yun輸shu的de雞ji,可ke及ji時shi補bu充chong機ji體ti所suo失shi的de水shui分fen。對dui於yu不bu願yuan意yi活huo動dong的de雞ji,應ying采cai用yong人ren工gong轟hong趕gan強qiang製zhi采cai食shi的de措cuo施shi,但dan應ying注zhu意yi動dong作zuo要yao輕qing,不bu要yao造zao成cheng擠ji壓ya致zhi死si的de現xian象xiang。光guang照zhao時shi間jian宜yi縮suo短duan,不bu宜yi延yan長chang,不bu可ke隨sui意yi改gai變bian光guang源yuan的de位wei置zhi、時間、強度等。
2.地麵幹燥不返潮。水泥地不吸水易潮濕,最好用三合土打地麵,地麵透氣、保持幹燥不返潮。另外,要控製飲水,一般飲水是耗料量的2-3倍,但不多供水,因為水多會加劇墊料的潮濕,不在舍內貯水,防止墊料吸水,用水管時防止跑水。
3.選好墊料保鬆軟。要用新鮮、幹燥、柔軟、不黴變、吸水性好的墊料,最好為刨花。用時要巧用,最好一次鋪好墊物,不要零星添加,要經常翻動,使其不發硬、不趕氈、不板結,保持鬆軟。
4.飼si料liao營ying養yang巧qiao搭da配pei。由you於yu秋qiu冬dong季ji氣qi溫wen偏pian低di,肉rou雞ji的de熱re量liang消xiao耗hao較jiao大da,配pei製zhi日ri糧liang時shi可ke適shi當dang提ti高gao飼si料liao中zhong代dai謝xie能neng的de標biao準zhun,而er適shi當dang降jiang低di飼si料liao中zhong蛋dan白bai質zhi的de比bi例li,同tong時shi要yao特te別bie注zhu意yi日ri糧liang中zhong維wei生sheng素su的de含han量liang,滿man足zu其qi需xu要yao。飼si料liao應ying現xian拌ban現xian喂wei,防fang止zhi冰bing凍dong,有you條tiao件jian時shi可ke以yi喂wei熱re料liao,飲yin溫wen水shui。所suo配pei飼si料liao的de原yuan糧liang必bi須xu無wu黴mei變bian、wuzazhi,yifangyoufahuxidaojibing。riliangzhongbuguoliangyongyan,fangzhiheshuiduo,daozhijifenhanshuifengaohuolaxi。lingwai,siliaozhonghanzhilvbuyaoguogao,fouzehuishifenbiannianchou,luozaidianliaoshangyibanjie。riliangzhongdanbaizhitianjiayaoshiliang,guoduozebuyixiaohua,ruweidoubingduo,rongyilaxi,dashidiancaozeyouhai。
訣竅四:嚴防疾病傳播
dangroujitizhijiaoruo,dikanglixiajiangshi,yixiejibingdefashenghaikebingfahuxidaojibing。yinci,zaitigaojitidikanglidetongshi,yaozuohaoyouguanjibingdefangzhigongzuo。youyimiaoyufangjiezhongdeyaoyangeanmianyichengxujinxingyufangzhushe。pingshiyaojingchangshiyongyixieyufangjibingdeyaowu。dingqigeijishexiaodu,kongjishezuihaocaiyongfuermalinxunzhengxiaodu,siyangqijianyicaiyonggaoxiaowududexiaodujijinxingpenwuxiaodu。dingqidaijixiaodu,yibancaiyongpensaxiaoduheyinshuixiaodupeihezhixing。roujifashenghuxidaojibingyihouyaojishizhaoshouyiquezhen,duizhengxiayao。duizhengzhiliaokeshidangyingyongyixiepingchuan、止咳的藥物,可減少因呼吸困難而死亡的數量。
一般來說,網上平養的肉雞群易發生非傳染性呼吸道病,尤其是25日(ri)齡(ling)左(zuo)右(you)的(de)肉(rou)雞(ji)以(yi)冬(dong)季(ji)時(shi)易(yi)發(fa)。引(yin)起(qi)該(gai)病(bing)的(de)原(yuan)因(yin)不(bu)是(shi)細(xi)菌(jun)或(huo)病(bing)毒(du),也(ye)不(bu)是(shi)寄(ji)生(sheng)蟲(chong),而(er)是(shi)飼(si)養(yang)管(guan)理(li)不(bu)善(shan)的(de)結(jie)果(guo),一(yi)般(ban)從(cong)第(di)一(yi)天(tian)開(kai)始(shi),連(lian)續(xu)或(huo)間(jian)斷(duan)的(de)空(kong)氣(qi)幹(gan)燥(zao)、粉塵過多,且在通風不良情況下,被雞群吸入、長期蓄積而致病。防治措施是在保持舍內溫度前提下,加大通風量,以保證舍內氧氣含量。要保持舍內一定濕度,第1周濕度20%左右,第2周至出欄濕度應保持60%左右。3周齡以上肉雞要以通風為主,舍內溫度不低於21℃即ji可ke。盡jin量liang減jian少shao不bu必bi要yao的de應ying激ji因yin素su,采cai取qu一yi切qie可ke行xing手shou段duan讓rang雞ji采cai食shi,以yi保bao證zheng機ji體ti能neng量liang需xu要yao,增zeng強qiang雞ji隻zhi抗kang病bing能neng力li。除chu采cai取qu以yi上shang相xiang應ying措cuo施shi外wai,在zai飲yin水shui和he飼si料liao中zhong添tian加jia適shi量liang的de抗kang菌jun藥yao物wu和he維wei生sheng素su或huo小xiao蘇su打da,以yi增zeng強qiang雞ji隻zhi的de抗kang應ying激ji能neng力li和he緩huan解jie由you於yu呼hu吸xi不bu暢chang引yin起qi的de酸suan中zhong毒du。
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