上海海洋大学学报2024，Vol.33Issue(6)：1324-1334,11.DOI:10.12024/jsou.20240304452
放养密度对中华绒螯蟹"六月黄"养殖性能和经济效益的影响
Effects of stocking density on culture performance and economic profits of out-season E.sinensis marketing in lunar June
摘要
Abstract
In order to study the suitable stocking density of out-season E.sinensis marketing in lunar June(Eriocheir sinensis)under pond culture conditions,male juvenile E.sinensis(20.43±0.11 g)were divided into three different stocking density groups:1.5 ind./m2(low density group),2.25 ind./m2(medium density group)and 3 ind./m2(high density group).The growth performance,tissue indices,culture effect and economic profits of out-season E.sinensis marketing in lunar June were compared through a 140-day culture experiment.The results showed that:(1)Since April 15,the average body weight of the low density group was always the highest,the medium density group was the second,and the high density group was the lowest.There were significant differences among the three groups on June 15 and July 5.The total weight gain rate(WGR)of the low density group was slightly higher than that of the medium density group,and both of them were significantly higher than that of the high density group(P<0.05).The meat yield(MY)of low density group and medium density group was significantly higher than that of high density group(P<0.05).The total edible yield(TEY)of low density group was significantly higher than that of high density group(P<0.05).(2)The final average body weight and survival rate(SR)of the low density group were significantly higher than those of the medium and high density groups(P<0.05),while the yield of the high density group was significantly higher than that of the medium and low density groups(P<0.05).The feed conversion rate(FCR)and limb loss rate(LLR)of the high density group were significantly higher than those of the low density group(P<0.05),but there was no significant difference between the high density group and the medium density group(P>0.05).In terms of size distribution,the proportion of larger-sized male E.sinensis(≥110 g)of low density group was the highest and that of smaller-sized male crab(<100 g)was the lowest.(3)The total cost and total income of the high density group were the highest,the medium density group was the second,and the low density group was the lowest.The differences among them were significant(P<0.05).The net profit of the high density group was significantly higher than that of the low density group(P<0.05),and slightly higher than that of the medium density group.The return-on-investment(ROI)is just the opposite.The culture model of out-season E.sinensis marketing in lunar June has the characteristics of short culture cycle,simple production operation,low investment cost and high income.Considering comprehensively,the suitable stocking density of out-season E.sinensis marketing in lunar June is 3 ind./m2.关键词
中华绒螯蟹/"六月黄"/放养密度/养殖性能/经济效益Key words
Eriocheir sinensis/out-season E.sinensis marketing in lunar June/stocking density/culture performance/economic profits分类
农业科技引用本文复制引用
彭涛,张冬冬,张光宝,周捷,陈文彬,蒋仁奎,姜晓东,吴旭干..放养密度对中华绒螯蟹"六月黄"养殖性能和经济效益的影响[J].上海海洋大学学报,2024,33(6):1324-1334,11.基金项目
湖州市重点研发计划项目农业"双强"专项(2023ZD2036) （2023ZD2036）
上海市河蟹产业体系专项(沪农科产字[2022]第4号) （沪农科产字[2022]第4号）
常州市农业科技创新和示范推广项目(KCSF[2023]08) （KCSF[2023]08）
上海市崇明区农业科创项目(2022CNKC-01-05) （2022CNKC-01-05）
江苏省农业农村厅种业振兴揭榜挂帅项目(JBGS[2021]127) （JBGS[2021]127）
