濕簾降溫作為夏季最有效、最經濟的降溫方法,越來越普遍的被養殖業所采用,濕簾降溫係統早已是白羽肉雞養殖的必備工具。
目前,生長快速型肉雞所使用的網養、籠long養yang養yang殖zhi模mo式shi飼si養yang密mi度du大da,對dui防fang暑shu降jiang溫wen的de要yao求qiu比bi開kai放fang式shi雞ji舍she地di麵mian平ping養yang模mo式shi要yao求qiu更geng高gao,濕shi簾lian降jiang溫wen係xi統tong在zai集ji團tuan肉rou雞ji養yang殖zhi生sheng產chan中zhong的de推tui廣guang應ying用yong也ye是shi大da勢shi所suo趨qu。本ben文wen從cong工gong作zuo原yuan理li,應ying用yong優you勢shi以yi及ji使shi用yong注zhu意yi事shi項xiang等deng方fang麵mian介jie紹shao該gai係xi統tong在zai肉rou雞ji養yang殖zhi中zhong的de應ying用yong。
1、濕簾降溫係統組成與工作原理
濕簾降溫係統是通過空氣與濕簾紙表麵的水直接接觸,實現空氣降溫增濕。濕簾降溫係統由濕簾、大流量節能風機、循(xun)環(huan)水(shui)係(xi)統(tong)和(he)控(kong)製(zhi)係(xi)統(tong)等(deng)組(zu)成(cheng)。濕(shi)簾(lian)是(shi)由(you)設(she)計(ji)成(cheng)特(te)殊(shu)角(jiao)度(du)的(de)纖(xian)維(wei)紙(zhi)粘(zhan)結(jie)而(er)成(cheng)的(de)過(guo)高(gao)分(fen)子(zi)材(cai)料(liao)處(chu)理(li),具(ju)有(you)吸(xi)濕(shi)性(xing),相(xiang)鄰(lin)兩(liang)層(ceng)濕(shi)簾(lian)紙(zhi)波(bo)紋(wen)傾(qing)斜(xie)方(fang)向(xiang)相(xiang)反(fan),形(xing)成(cheng)一(yi)係(xi)列(lie)相(xiang)互(hu)交(jiao)錯(cuo)的(de)通(tong)道(dao),為(wei)空(kong)氣(qi)和(he)水(shui)提(ti)供(gong)了(le)足(zu)夠(gou)大(da)的(de)接(jie)觸(chu)麵(mian)積(ji)。噴(pen)淋(lin)水(shui)自(zi)上(shang)而(er)下(xia)流(liu)過(guo)濕(shi)簾(lian)紙(zhi),在(zai)濕(shi)簾(lian)紙(zhi)上(shang)形(xing)成(cheng)水(shui)膜(mo),此(ci)時(shi)開(kai)啟(qi)風(feng)機(ji),舍(she)內(nei)形(xing)成(cheng)負(fu)壓(ya),舍(she)外(wai)空(kong)氣(qi)經(jing)過(guo)多(duo)孔(kong)濕(shi)潤(run)的(de)濕(shi)簾(lian),進(jin)入(ru)雞(ji)舍(she),通(tong)過(guo)蒸(zheng)發(fa)濕(shi)簾(lian)中(zhong)的(de)水(shui)分(fen)吸(xi)熱(re),水(shui)由(you)液(ye)體(ti)變(bian)氣(qi)體(ti)將(jiang)吸(xi)收(shou)大(da)量(liang)熱(re)量(liang),達(da)到(dao)降(jiang)溫(wen)的(de)目(mu)的(de)。空(kong)氣(qi)越(yue)幹(gan)熱(re),降(jiang)溫(wen)效(xiao)果(guo)越(yue)好(hao),水(shui)溫(wen)越(yue)高(gao),蒸(zheng)發(fa)效(xiao)果(guo)越(yue)好(hao),但(dan)濕(shi)度(du)達(da)到(dao)80%以上則蒸發效果不明顯,此時應立即關閉濕簾,開啟縱向通風以降低濕度。
2、濕簾降溫係統應用於肉雞養殖的優勢
(1)降溫效果顯著,造價低廉。節能環保在適宜的溫度和濕度條件下,畜禽的生產力、siliaoliyonglvhekangbinglvdoujiaogao。shilianjiangwenyupenwujiangwenxiangbi,shilianjiangwenshidejisheneihuanjingchuxiandiwengaoshi,erpenwujiangwenqueshijisheneihuanjingchuxiangaowengaoshi,diwengaoshihuanjingxia,jitongguokegansanrelaiweichitiwen,zengjialejidelenggan,shilianjiangwenxitongdejiangwenxiaoguoqueshi,jiangwenfuduyibankedadao10-15℃。通(tong)過(guo)風(feng)機(ji)於(yu)水(shui)簾(lian)的(de)配(pei)合(he)利(li)用(yong)自(zi)然(ran)界(jie)加(jia)濕(shi)降(jiang)溫(wen)這(zhe)一(yi)物(wu)理(li)過(guo)程(cheng),不(bu)斷(duan)的(de)抽(chou)進(jin)新(xin)鮮(xian)空(kong)氣(qi)來(lai)淨(jing)化(hua)工(gong)作(zuo)環(huan)境(jing),提(ti)高(gao)了(le)環(huan)境(jing)的(de)舒(shu)適(shi)性(xing)。由(you)於(yu)濕(shi)簾(lian)降(jiang)溫(wen)係(xi)統(tong)結(jie)構(gou)簡(jian)單(dan),使(shi)用(yong)的(de)材(cai)料(liao)價(jia)格(ge)比(bi)較(jiao)低(di)所(suo)以(yi)造(zao)價(jia)低(di)廉(lian),是(shi)空(kong)調(tiao)設(she)備(bei)投(tou)資(zi)的(de)1/30,且具有風量大,無振動,噪音低、產冷量大等有優勢,耗電量隻需要壓縮機空調的1/20,隻要加以適當的維護,使用壽命可長達8年以上。
(2)增(zeng)加(jia)日(ri)增(zeng)重(zhong),提(ti)高(gao)采(cai)食(shi)量(liang),降(jiang)低(di)料(liao)肉(rou)比(bi)。夏(xia)季(ji)肉(rou)雞(ji)的(de)采(cai)食(shi)量(liang)下(xia)降(jiang),增(zeng)重(zhong)變(bian)慢(man)一(yi)直(zhi)是(shi)困(kun)擾(rao)黃(huang)雞(ji)養(yang)殖(zhi)的(de)大(da)問(wen)題(ti)。有(you)研(yan)究(jiu)表(biao)明(ming),當(dang)環(huan)境(jing)溫(wen)度(du)的(de)變(bian)化(hua)超(chao)出(chu)雞(ji)體(ti)行(xing)為(wei)和(he)物(wu)理(li)調(tiao)節(jie)時(shi),皮(pi)質(zhi)醇(chun)合(he)成(cheng)增(zeng)加(jia)以(yi)促(cu)進(jin)能(neng)量(liang)代(dai)謝(xie),維(wei)持(chi)血(xue)糖(tang)濃(nong)度(du);同tong時shi,通tong過guo高gao溫wen刺ci激ji大da腦nao皮pi層ceng抑yi製zhi促cu甲jia狀zhuang腺xian激ji素su分fen泌mi,減jian少shao體ti蛋dan白bai合he成cheng,生sheng長chang速su度du下xia降jiang。由you於yu采cai食shi量liang是shi由you位wei於yu丘qiu腦nao下xia部bu的de嗜shi食shi中zhong樞shu和he厭yan食shi中zhong樞shu控kong製zhi,這zhe兩liang個ge中zhong樞shu主zhu要yao接jie受shou葡pu糖tang感gan受shou器qi、胃(wei)伸(shen)張(zhang)感(gan)受(shou)器(qi)和(he)溫(wen)度(du)感(gan)受(shou)器(qi)的(de)信(xin)號(hao),其(qi)中(zhong)溫(wen)度(du)感(gan)受(shou)器(qi)反(fan)應(ying)體(ti)溫(wen)和(he)氣(qi)溫(wen)的(de)變(bian)化(hua)實(shi)現(xian)調(tiao)控(kong)。高(gao)溫(wen)可(ke)使(shi)采(cai)食(shi)量(liang)減(jian)少(shao),相(xiang)反(fan)低(di)溫(wen)可(ke)增(zeng)加(jia)采(cai)食(shi)量(liang)。濕(shi)簾(lian)降(jiang)溫(wen)係(xi)統(tong)就(jiu)是(shi)通(tong)過(guo)降(jiang)低(di)雞(ji)舍(she)的(de)環(huan)境(jing)溫(wen)度(du),從(cong)而(er)間(jian)接(jie)提(ti)高(gao)了(le)雞(ji)的(de)采(cai)食(shi)量(liang)。
(3)降低熱應激引起的死亡率在炎熱的夏季,死亡率主要來自環境高溫引發的熱應激,使得體熱無法散失,發生“中暑”ersiwang。huanjingwenduguogaoshi,shideyimiaoshihuohuojidemianyijinengxiajiang,daozhimianyixiaoguobujia,qiegaowengaoshidehuanjingyouliyugezhongbingyuanweishengwudeshengchangfanzhi,yifashengxijunbinghuojishengchongbing。zengyouyanjiubaodao,shilianjiangwenxitongshixiajichandanjisiwanglvxiajiang57.9%,死亡率下降顯著,肉雞養殖的應用優勢則更加明顯。
3、使用中應注意的幾個問題
雞舍要盡可能密閉,如果不密閉,則開啟風機後雞舍內不能形成負壓,通過濕簾的冷風將相應減少,降溫效果會大打折扣;建議濕簾和雞之間隔2-3米,防止冷風直接吹在雞身上導致感冒;控製好濕簾開啟的時間,考慮到節約水電和實際降溫的需要,一般建議每天的13-16時開啟濕簾;zuohaoshilianzheyin,jianyizaishilianwaijiazheyangpeng,yifangtaiyangzhishezaishilianshang,zhishishuiwenshenggao,yingxiangjiangwenxiaoguo,jinliangshiyongshenjingshui,liujingshiliandeshuiyueleng,jiangwenxiaoguoyuehao;第一次啟用濕簾的用水必須加消毒劑(推薦使用氯製劑),防止疾病傳播;定期檢查和維護,使用期間,要每天清洗濕簾過濾器1次,定期檢查濕簾是否被羽毛等毛屑堵塞,如發生變形或坍塌應及時處理或修複;進入降溫季節,濕簾內外要加棉毯或薄膜,防止冷空氣進入雞舍;風機要有備用電源,萬一停電,特別是氣溫高達36℃以上的夏季,雞舍內溫度會迅速上升,短時間內即會造成重大損失。
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