池塘养殖密度对兴凯湖翘嘴鲌幼鱼生长的影响  

Effects of different culture densities on the growth of juvenile Khanka Culter alburnus

作　　者：刘炜 裴雪莹 茆健强 陈树桥 张雷鸣 代雅凡 周国勤 LIU Wei;PEI Xueying;MAO Jianqiang;CHEN Shuqiao;ZHANG Leiming;DAI Yafan;ZHOU Guoqin(College of Fisheries,Huazhong Agricultural University,Wuhan 430070,China;Nanjing Institute of Fishery Sciences,Nanjing 210019,China)

机构地区：[1]华中农业大学水产学院,湖北武汉430070 [2]南京市水产科学研究所,江苏南京210019

出　　处：《水产科技情报》2024年第2期83-88,共6页Fisheries Science & Technology Information

基　　金：南京市科技计划项目“兴凯湖翘嘴鲌全雌系选育”。

摘　　要：为研究养殖密度对兴凯湖翘嘴鲌幼鱼生长性能的影响,探索兴凯湖翘嘴鲌池塘养殖密度阈值,设置养殖密度分别为15万尾/hm^(2)(D1)、30万尾/hm^(2)(D2)、60万尾/hm^(2)(D3)、90万尾/hm^(2)(D4)、150万尾/hm^(2)(D5)共5个试验组,进行了为期180 d的兴凯湖翘嘴鲌幼鱼池塘培育试验。试验结果显示:幼鱼的增重率随着放养密度的增加呈现明显的下降趋势,其中放养密度最低的D1组幼鱼的增重率最高,达63.74%,但与D2组(60.57%)没有显著差异,D1、D2组幼鱼的增重率显著高于其他密度组(P<0.05);幼鱼的体长增长率也随着养殖密度的增加呈现显著下降的趋势,D1组体长增长率最高,为3.16%,D5组最低,为0.56%;养殖试验结束时,5个试验组鱼的肥满度无明显差异。结果表明,池塘养殖条件下兴凯湖翘嘴鲌幼鱼的适宜培育密度为30万~60万尾/hm^(2)。In order to explore the optimal stocking density of Khanka Culter alburnus,a 180-day breeding trial of C.alburnus fingerlings under five different stocking densities of 150000(D1),300000(D2),600000(D3),900000(D4)and 1500000(D5)ind/hm^(2) was conducted.The results showed that the weight gain rate of fish decreased significantly with the increase of density(P<0.05),and the weight gain rate of group D1 was the highest(63.74%),but there was no significant difference between the D1 group and the D2 group(60.57%),and the D1 and D2 groups were significantly higher than those in the other density groups(P<0.05).The increase rate of body length decreased significantly with the increase of density(P<0.05),the highest was 3.16%in group D1,and the lowest was 0.56%in group D5.There was no significant difference in the final plumpness among five groups after 180-day trial.The results indicated that the most optimum stocking density range for C.alburnus juvenile was 300000 to 600000 ind/hm^(2).

关 键 词：兴凯湖翘嘴鲌 池塘养殖 养殖密度 生长 养殖效益 

分 类 号：S965.1[农业科学—水产养殖]