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一项名为罗氏沼虾变性繁苗、养殖的科研项目日前在吴江被水产专家攻克。专家认为,这项技术将给罗氏招虾养殖产业带来更大的发展。 记者从江苏省最早引进罗氏招虾繁苗的八都镇了解到,经过10年的发展,该镇今年繁苗量可望突破21亿尾。但长期以来罗氏沼虾雌虾性腺发育带来品种退化、产量降低问题一直没有很好解决。今年以来.该镇聘请上海水产专家进行技术会诊,研制出一种特殊的饲料。经这种饲料喂养的罗氏沼虾雌虾性腺发育被抑制并退化。继而转化为雄虾。试验资料表明,通过变性繁殖的苗种,在养殖成商品虾时,雄性率可达80％以上,且虾体个大,亩产同比可增40公斤,亩增效益可达1000元。
A project called Roche Macrobrachium degeneration, breeding aquaculture scientific research project recently been captured by aquaculture experts in Wujiang. Experts believe that this technology will bring greater development to Roche’s shrimp farming industry. Reporters from Jiangsu Province introduced the first to reclaim shrimp mushrooms Bodo town learned that after 10 years of development, the town this year is expected to exceed 2.1 billion seedlings last month. However, for a long time, the development of gonadal development of M. rosenbergii female has been degraded, and the problem of yield reduction has not been well solved. This year, the town hired Shanghai fisheries experts to conduct technical consultations, developed a special feed. Gonadal development of females of M. rosenbergii fed with this feed was inhibited and degenerated. Then transformed into male shrimp. Experimental data show that breeding of commercial shrimp breeding through breeding, the male rate of up to 80% or more, and the shrimp body a large, increase of 40 kg per year, acres of benefits up to 1,000 yuan.