animal : aquatic feed : seafood > chinchilla White shrimp



Contents ·No. 1 ·Containing Phrases ·More results... No. 1 　　白对虾南美白对虾（Penaeus vannamei Boone，1931）学名凡纳对虾，属节肢动物门（Arthropoda）、甲壳纲（Crustacea）、十足目（Decapoda）、游泳亚目（Natantia）、对虾科（Penaeidae）、对虾属（Penaeus）、Lito-penaeus亚属，是广温广盐性热带虾类。俗称：又称白肢虾（white－leg shrimp）、白对虾（white shrimp），以前翻译为万氏对虾，外形酷似中国对虾、墨吉对虾，平均寿命至少可以超过32个月。成体最长可达24cm，甲壳较薄，正常体色为浅青灰色，全身不具斑纹。步足常呈白垩状，故有白肢虾之称。 　　额角尖端的长度不超出第1触角柄的第2节，其齿式为5-9/2-4；头胸甲较短，与腹部的比例约为1：3；额角侧沟短，到胃上剌下方即消失；头胸甲具肝刺及鳃角剌；肝剌明显；第1触角具双鞭，内鞭较外鞭纤细，长度大致相等，但皆短小（约为第1触角柄长度的1/3）；第l-3对步足的上肢十分发达，第4-5对步足无上肢，第5对步足具雏形外肢；腹部第4-6节具背脊；尾节具中央沟，但不具缘侧剌。 　　南美白对虾原产于美洲太平洋沿岸水域，主要分布秘鲁北部至墨西哥湾沿岸，以厄瓜多尔沿岸分布最为集中。南美白对虾具有个体大、生长快、营养需求低、抗病力强等优点，对水环境因子变化的适应能力较强，对饲料蛋白含量要求低、出肉率高达65%以上、离水存活时间长等优点，是集约化高产养殖的优良品种，也是目前世界上三大养殖对虾中单产量最高的虾种。南美白对虾壳薄体肥，肉质鲜美，含肉率高，营养丰富。收成后其耐活力较差，所以大多是速冻上市的。 　　在20世纪80年代，对虾养殖业的发展曾给我国的水产养殖业写下辉煌的一笔，极大地带动了沿海地区的经济发展，并带动了沿海地区育苗、饵料生产、冷藏加工等相关产业链的同步发展，它所起到的作用是不可磨灭的。可是，进入90年代，特别从92年起，由于对虾病毒病在全国各地的蔓延，水产工作者一时又找不出合适的对策，导致对虾养殖业大伤元气，经济效益一落千丈。因此，水产工作者们一方面刻苦钻研对虾病毒病，另一方面探索对虾养殖业新的替代品种、新的经济增长点，于是南美白对虾的养殖浮出水面。 　　1988年7月，南美白对虾由中国科学院海洋研究所从美国夏威夷引进我国，1992年8月人工繁殖获得了初步的成功，1994年通过人工育苗获得了小批量的虾苗，1999年深圳天俊实业股份有限公司与美国三高海洋生物技术公司合作，引进美SPF南美白对虾种虾和繁育技术，成功地培育出了SPF南美白对虾苗。2000年的早期苗的价格达到了400－600元/万尾，2001年后逐步降低并基本维持在100元左右/万尾。成品虾价格也由引进初期的每斤近百元降至目前的10元左右。 　　南美白对虾人工养殖生长速度快，60天即可达上市规格；适盐范围广（0－40‰），可以采取纯淡水、半咸水、海水多种养殖模式，从自然海区到淡水池塘均可生长，从而打破了地域限制，且具耐高温，抗病力强；食性杂，对饲料蛋白要求低，35%即可达生长所需。是“海虾淡养”的优质品种，使其养殖地域范围扩大。养殖南美白对虾，放养虾苗规格要在2厘米以上，经淡化到零度的种苗，池塘以3-5亩为宜，水深1.5米左右，放苗时间在5月底、6月初，水温在20℃以上，一般养殖条件下，亩放虾苗2万尾，并搭养500-100尾花、白鲢，以投喂颗粒饲料为主，定期使用光合细菌和水质调节剂，调控水质，预防虾病。 Containing Phrases chinchilla White shrimp college Chinchilla white shrimp Hongtibing chinchilla White shrimp Enteritidis illness Chinchilla white shrimp Hongtuibing chinchilla White shrimp blotch Chinchilla white shrimp Heisaibing Chinchilla white shrimp Hongtibing prevention and cure Chinchilla white shrimp Ruankebing prevention and cure Chinchilla white shrimp Cultivate four notice Freshwater Yekeyang Chinchilla white shrimp Chinchilla white shrimp Miaozhong Cultivate technology Chinchilla white shrimp Disease And prevention and cure Chinchilla white shrimp Disease of diagnose Chinchilla white shrimp low Salinity Cultivate technology Chinchilla white shrimp Species disease control chinchilla White shrimp And Boleophthalmus Hunyang Yanfaqingtang Cultivate chinchilla White shrimp cornfield cultivate Chinchilla white shrimp technology chinchilla White shrimp And River crab Hunyang high-quality, high-yield, cost-effective, eco-friendly and safe agriculture Consider Yanghao chinchilla White shrimp Tantan Chinchilla white shrimp glom incurable disease chinchilla White shrimp And River crab Hunyang technology prevention and cure Chinchilla white shrimp Sidi Fengtai district chinchilla White shrimp college Chinchilla white shrimp Sidizhengde Prevention and cure card research raise, rear, bring up Chinchilla white shrimp Consider Economise feed technology chinchilla White shrimp silkiness Bacteriosis very prevention and cure Chinchilla white shrimp Duidan Cultivate Disease of prevention and cure Differently District Cultivate Chinchilla white shrimp salt Degree regulate plan Chinchilla white Langoustine blotch syndrome of prevention and cure reduce Chinchilla white shrimp Feed cost provide insurance against Chinchilla white shrimp Seedling Chong fang raise, rear, bring up technology marrow Chinchilla white shrimp Species Disease control The new law Chinchilla white shrimp blotch synthesis prevention and cure card improve Chinchilla white shrimp premunition approach to Roche macrobrachium Gaiyang Chinchilla White shrimp of Couple marrow Chinchilla white shrimp Barricading ceremony Intensification cultivate Pond Base Zengyang Cultivate chinchilla white shrimp raise, rear, bring up Chinchilla white shrimp Consider Economise feed cost cultivate Chinchilla white shrimp Economise feed approach to Chinchilla white shrimp Freshwater Shuangcha Biology high-quality, high-yield, cost-effective, eco-friendly and safe agriculture Cultivate technology Chinchilla white shrimp And Tilapia Hunyang Trial Brae pond Chinchilla white shrimp Cultivate technology Salinate fields District Consider cultivate chinchilla White shrimp cultivate Chinchilla white shrimp Consider economise feed Chinchilla white shrimp Cultivate Anaphase Chidi regulate stocking Chinchilla white shrimp Seedling Ba da announcements Chinchilla white shrimp violent Pathogenetic Arise And prevention and cure Chinchilla white shrimp Sidizhengtou Incurable disease of Prevention and cure card research Knob Cornfield Keshiyang chinchilla White shrimp Chinchilla white shrimp Pond Health Jingyang technology Chinchilla white shrimp High compactness Cultivate Beware Sidizheng arise Chinchilla white shrimp Desalting Biaocu technology marrow Chinchilla white shrimp Beef Whitish Bingji Twitch illness Chinchilla white shrimp Sidizhengde Prevention and cure card research