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罗氏沼虾是联合国粮农组织向世界各国推荐的淡水最大型虾类之一,它具有个体大、生长快、产量高、抗病力强等特点,是淡水养殖新品种。1995年我所承担省科委下达“罗氏沼虾养殖技术推广”的星火项目,与连江康隆鳗场合作开展罗氏沼虾人工育苗,当年培育出淡化苗500多万尾,推广到连江、南平、福州等地试养。试养效果良好,从各地抽样验收,亩产量为150—200kg,养殖成活率为60％以上,达到或超过养殖示范产量指标。 淡化后的仔虾其个体大小,体质强弱直接关系到下塘养殖成活率,直至养成产量与效益。要培养规格整齐、体质强壮的苗种与育苗技术有着密切关系,现将人工育苗技术要点总结如下。
Macrobrachium rosenbergii is one of the largest freshwater shrimp recommended by FAO to all countries in the world. It has the characteristics of large size, fast growth, high yield and strong disease resistance. It is a new breed of freshwater aquaculture. In 1995, I was responsible for the provincial Spark Science and Technology Commission issued a “Macrobrachium Rosenberg breeding technology promotion,” the Spark project, and Lianjiang Kang Eel cooperation in artificial breeding of Macrobrachium rosenbergii, fostering seedlings that year to cultivate more than 500 million to promote to Lianjiang, Nanping, Fuzhou and other places trial. Trial good effect, sampling from all over the acceptance, mu production was 150-200kg, breeding survival rate of 60% or more, to meet or exceed the farming demonstration yield indicators. Desalinated larvae their individual size, physical strength directly related to the next pond breeding survival rate, until the formation of yield and benefits. To develop neat specifications, strong physical seedlings and seedling technology is closely related to artificial seedling technology now summarized as follows.