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在池塘网箱养殖条件下,比较了长江中下游洞庭湖、鄱阳湖、太湖、长江如皋段以及浙江长兴等五个群体青虾生长养殖情况。结果表明,这五个群体青虾在网箱中体长以线性速度生长、体重以指数形式生长;太湖群体青虾的性成熟率最低,生长速度最快,成活率最高,养殖总产量最高,浙江长兴本地养殖群体相反。以30天性成熟率、绝对增重率、瞬时增重率、90天成活率和90天总产量这几个指标,太湖群体分别比养殖效果最差的浙江长兴群体低37.3%和高73.2%、20.8%、3.9%、75.2%。在浙江长兴养殖太湖青虾最好,并应做好青虾保种选育工作。
Under the conditions of pond cage culture, the growth and culture of freshwater shrimp from five groups including Dongting Lake, Poyang Lake, Taihu Lake, the Rift Valley along the Yangtze River and Changxing of Zhejiang Province were compared. The results showed that the freshwater shrimp grew faster at a linear velocity and the body weight grew exponentially in the cages. The freshwater shrimp had the lowest sexual maturity rate, the fastest growth rate, the highest survival rate and the highest total aquaculture production, Zhejiang Changxing local farming groups on the contrary. With 30 days maturity rate, absolute weight gain rate, instantaneous weight gain rate, 90-day survival rate and 90-day total output, the population of Taihu Lake was 37.3% and 73.2% lower than that of Zhejiang Changxing population, 20.8%, 3.9%, 75.2%. Breeding in Changxing, Zhejiang Province, the best freshwater shrimp, and shrimp breeding should be done breeding.