雞產蛋最適宜的溫度是13-20℃。環境溫度達25-29℃則產蛋率下降,蛋重小,天殼變薄,呼吸次數開始增加,溫度超過29℃時,雞因過熱而體質虛弱。相反,如雞舍溫度低於5℃時,產蛋顯著減少,低於零下9℃時,雞活動遲鈍,雞冠發生凍衡。溫度對雞的健康和產蛋影響很大,其影響的程度,因年齡、品(pin)種(zhong)類(lei)型(xing)而(er)有(you)差(cha)別(bie),一(yi)般(ban)地(di)講(jiang),溫(wen)度(du)過(guo)低(di)時(shi)體(ti)溫(wen)散(san)失(shi)加(jia)快(kuai),飼(si)料(liao)消(xiao)耗(hao)增(zeng)加(jia),嚴(yan)重(zhong)則(ze)產(chan)蛋(dan)減(jian)少(shao),雞(ji)體(ti)消(xiao)瘦(shou),容(rong)易(yi)感(gan)染(ran)疾(ji)病(bing)。雞(ji)缺(que)乏(fa)汗(han)腺(xian),羽(yu)毛(mao)很(hen)厚(hou),主(zhu)要(yao)靠(kao)呼(hu)吸(xi)蒸(zheng)發(fa)和(he)飲(yin)水(shui)排(pai)泄(xie)散(san)放(fang)體(ti)溫(wen)。如(ru)果(guo)環(huan)境(jing)溫(wen)度(du)過(guo)而(er)則(ze)體(ti)熱(re)的(de)故(gu)發(fa)受(shou)阻(zu),呼(hu)吸(xi)加(jia)快(kuai),飲(yin)水(shui)增(zeng)加(jia)食(shi)欲(yu)減(jian)退(tui),經(jing)久(jiu)則(ze)產(chan)蛋(dan)減(jian)少(shao),蛋(dan)重(zhong)減(jian)輕(qing),高(gao)溫(wen)比(bi)低(di)溫(wen)對(dui)雞(ji)的(de)影(ying)響(xiang)更(geng)大(da)。
濕度對雞的體感溫度、體溫案發和環境衛生鬱肩影響。環境溫度與濕度、tongfengdengyinsujieheqilaigongtongxingchengjideyongganwendu,jijishijiganshoudewendu。dongjidiwenshi,kongqichaoshihuotongfengjiakuai,keshijitigengganhanleng。xiajigaowenshishiduhetongfengbuzu,zejihuigandaogengre。yinci,dongjiyangjiyingzhuyisheneibaowen,fangzhichaoshi。xiajiyangjiyingzhuyisheneitongfenglianghao,zuohaofangshujiangwengongzuo,jishezhouweiheyundongchangneiyinggaizaishuhuoyouzhehuanshebei。
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