上海海洋大学学报2025，Vol.34Issue(4)：741-748,8.DOI:10.12024/jsou.20240904629
纯公幼蟹放养密度对六月黄大规格蟹种养殖性能的影响
Effect of stocking density of juvenile crab on culture performance of exclusive crabseed for out-season crab at lunar June(Eriocheir sinensis)
摘要
Abstract
To explore the optimal breeding density of exclusive crabseed for out-season crab at lunar June(Eriocheir sinensis),this study took juvenile crab as the test object,and set 4 density groups:D1 10 ind./m2,D2 20 ind./m2,D3 30 ind./m2 and D4 40 ind./m2.The growth performance and culture benefit of each density group were compared and analyzed by pond culture experiment.Results indicated:(1)With the increase of culture density,the average body mass of crabs in group D1 was significantly higher than that in the other three groups during culture.In terms of weight gain rate and specific growth rate,group D1 always had an advantage over the other groups from July to October,but was significantly lower than the other groups from October to November.(2)D3 group achieved the best breeding effect,which was reflected in relatively impressive size and yield,and achieved the highest survival rate,the lowest early maturing rate and feed coefficient.(3)In terms of size distribution,the final size of buckled crabs in groups D1 and D2 was mainly concentrated in the range of 35-45 g,and the weight of buckled crabs in groups D3 and D4 was mainly concentrated in the range of 25-35 g.With the increase of stocking density,the proportion of juvenile crabs in each density group less than 35 g gradually increased,while the proportion of juvenile crabs greater than 35 g gradually decreased.(4)In terms of economic benefits,D4 group achieved the highest income and profit,while D3 group achieved the highest return-on-investment.According to the comprehensive evaluation,the breeding density model of 30 ind./m2 can obtain relatively considerable yield and feed coefficient,and its harvest size is also larger,which is the optimal breeding density of June yellow large size crab species.关键词
中华绒螯蟹/放养密度/幼蟹/六月黄Key words
Chinese mitten crab/stocking density/juvenile crab/out-season crab at lunar June分类
农业科技引用本文复制引用
梁梓龙,吴旭干,陈文彬,罗明,姜晓东..纯公幼蟹放养密度对六月黄大规格蟹种养殖性能的影响[J].上海海洋大学学报,2025,34(4):741-748,8.基金项目
常州市农业科技创新和示范推广项目(KCSF202308) （KCSF202308）
金坛区农业农村局科技项目(JTNL2019001) （JTNL2019001）
江苏省种业振兴"揭榜挂帅"核心种源攻关项目(JBGS[2021]127) （JBGS[2021]127）
