在zai自zi然ran生sheng態tai條tiao件jian下xia,黃huang鱔shan具ju有you極ji強qiang的de生sheng命ming力li和he抗kang病bing力li,而er人ren工gong養yang殖zhi條tiao件jian下xia,由you於yu飼si養yang密mi度du增zeng大da,易yi引yin發fa病bing害hai。黃huang鱔shan發fa病bing初chu期qi很hen難nan觀guan察cha到dao,一yi旦dan病bing症zheng明ming顯xian已yi經jing很hen難nan治zhi愈yu了le,因yin此ci,鱔shan魚yu養yang殖zhi要yao堅jian持chi預yu防fang為wei主zhu、防治結合。
1.梅(mei)花(hua)斑(ban)病(bing)。初(chu)期(qi)於(yu)傷(shang)口(kou)或(huo)弱(ruo)鱔(shan)肛(gang)門(men)附(fu)近(jin)等(deng)出(chu)現(xian)小(xiao)紅(hong)斑(ban),繼(ji)而(er)擴(kuo)大(da)成(cheng)豆(dou)粒(li)大(da)小(xiao)的(de)圓(yuan)形(xing)或(huo)橢(tuo)圓(yuan)形(xing)斑(ban),嚴(yan)重(zhong)時(shi)尾(wei)部(bu)全(quan)部(bu)爛(lan)掉(diao),漂(piao)浮(fu)水(shui)麵(mian)而(er)死(si)。防(fang)治(zhi)方(fang)法(fa):經常在鱔魚池內放幾隻癩蛤蟆,利用其身上所分泌的毒汁,可有效殺死病菌。
2.fashaobing。gaomidusiyangqingkuangxia,huangshanfenmizhanyedesudujiakuai,ruohuanshuibujishihuohuanshuiyousijiaoshi,jiuhuiyinzhanyefajiaoershifanggaore,yinqihuangshantiwenshenggao。bingshanxianghuchanraofangun,tibiaozhanyetuoluo,toubuzhongzhang、焦燥。防治方法:減少放養密度,池內增投部分泥鰍,利用泥鰍吃掉剩餌,又可利用它上下翻滾,減少黃鱔纏繞。另外,還要注意換水。
3.膚fu黴mei病bing。此ci病bing是shi由you於yu放fang養yang密mi度du過guo大da和he餌er料liao不bu足zu而er引yin起qi黃huang鱔shan互hu相xiang殘can殺sha導dao致zhi的de,病bing鱔shan身shen上shang有you綿mian黴mei狀zhuang菌jun絲si,體ti質zhi瘦shou弱ruo,很hen少shao攝she食shi,終zhong致zhi衰shuai竭jie而er死si。防fang治zhi方fang法fa:用占池水重量萬分之四的食鹽和小蘇打 (各占1/2拌勻),加水溶化後,潑灑全池。
4.maoxixianchongbing。huangshanhuancibingjiaopubian,zhuyaoshiyoumaoxixianchongtijishengyuchangbizhanmoceng,pohuaichangbizuzhi,yinqichangbiyanzheng。bingshantizhishouruo,shiyudajian,yanzhongshihuangshanchangchangzhengzhacuantiao。fangzhifangfa:每百公斤黃鱔用90%晶體敵百蟲10克,拌入豆餅3公斤,製成藥丸投喂,連續投喂3~5天即可。
5.queyangzheng。cizhengduofashengyugaowentianqi,youyushanchizhongwendujiaogao,haoyangjiaoduo,daozhishanchiqueyang,tongshi,yinshuimiangaowen,huangshanwufatantouhuxikongqi,daozhihuangshanpinfantantouyudongwai,zaochengjitihuxigongnengwenluan,zuizhongshuaijiesiwang。yufangfangfa:經常巡池,抽查鱔體、鱔池水質,一旦發病,立即換水,並配合底泥加強增氧措施。
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