摘要
该研究旨在探讨不同养殖密度对三倍体虹鳟(Oncorhynchus mykiss)苗种生长性能的影响。选取体重0.17 g,体长2.93 cm的同批次开口苗种16800尾,试验设置200、400、600、800、1000、1200尾6个养殖密度组,分别为M1组、M2组、M3组、M4组、M5组、M6组,每组3个重复。试验周期2个月,其间记录幼苗体长(cm)、体重(g)及成活率。结果显示,M3组的肥满系数及成活率数值最高,与其他组存在显著性差异(P<0.05);其试验末体重、体长、增重率、特定生长率与M2组不存在显著性差异(P>0.05);生长性能表现最佳的为M1组,但M1组的成活率仅为93.2%,与M3组成活率98.1%存在显著性差异(P<0.05)。研究结果表明,在水温11℃~13℃的养殖条件下,三倍体虹鳟稚鱼的最佳养殖密度为M3组(6667尾/m~3),其生长性能及存活率表现较佳。
This study was conducted to investigate the effects of different culture densities on the growth performance of triploid Oncorhynchus mykiss seedlings.A total of 16800 open seedlings of the same batch with body weight of 0.17g and body length of 2.93cm were selected.6 breeding density groups of 200,400,600,800,1000 and 1200 were set up,namely M1 group,M2 group,M3 group,M4 group,M5 group and M6 group,with 3 replicates per group.The experiment period was 2 months,during which the body length(cm),body weight(g)and survival rate of seedlings were recorded.The results showed that the filling coefficient and survival rate of M3 group were the highest,and there were significant differences between M3 group and other groups(P<0.05).At the end of the experiment,there were no significant differences in body weight,body length,weight gain rate and specific growth rate between M2 group and M2 group(P>0.05).M1 group showed the best growth performance,but the survival rate of M1 group was only 93.2%,which was significantly different from that of M3 group 98.1%(P<0.05).The results showed that the optimum breeding density of triploid Oncorhynchus mykiss larvae was M3 group(6667 fish/m 3)at the temperature of 11℃~13℃,and the growth performance and survival rate of Oncorhynchus mykiss larvae were better.
作者
牛建功
张涛
蔡林钢
李春雨
余洋
刘鸿
胡江伟
米乃瓦尔·木依提
杨博文
NIU Jiangong;ZHANG Tao;CAI Lingang;LI Chunyu;YU Yang;LIU Hong;HU Jiangwei;Minawaer MUYIT;YANG Bowen(Xinjiang Uygur Autonomous Region Fishery Research Institute,Scientific Observing and Experimental Station of the northwest region,Xinjiang Uygur 830000,Xinjiang Uygur China;Xinjiang Tianyun organic Agriculture Co.Ltd,Xinjiang Yili 835000,Xinjiang Uygur China)
出处
《黑龙江水产》
2024年第5期555-557,共3页
Northern Chinese Fisheries
基金
新疆维吾尔自治区“三农”骨干人才培养项目(2022SNGGCY0)。
