期刊论文

EFFECTS OF FISH MEAL LEVELS ON GROWTH AND IMMUNITY OF BLACK CARP (MYLOPHARYNGODON PICEUS) IN DIFFERENT CULTURE DENSITIES

Zhong, L.

中文

水生生物学报

1000-3207

2020

44

1

75-84

10.7541/2020.010

收稿日期: 2018-11-20; 修订日期: 2019-05-17 基金项目: 湖南省科技重大专项(2017NK1030); 国家星火计划重点项目(2011GA770007); 湖南省重点研发项目(2017NK2302)资助 [Supported by the Hunan Science and Technology Major Project (2017NK1030); National Spark Program Key Project (2011GA770007); Hunan Provincial Key Research and Development Project (2017NK2302)] 作者简介: 胡毅(1974—), 男, 湖南涟源人；教授, 博士生导师; 研究方向为水产动物营养与饲料。E-mail: huyi740322@163.com 通信作者: 钟蕾(1976—), 副教授, 硕士生导师; 研究方向为水产动物营养与免疫。E-mail: zhonglei-5@163.com

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为研究鱼粉水平和养殖密度对青鱼(Mylopharyngodon plceus)幼鱼生长及免疫的影响,试验采用鱼粉水平(10%、20%)×养殖密度(50、100和200尾/箱)的双因素设计,将青鱼幼鱼(2.50±0.02) g分为L_(50)、L_(100)、L_(200)、H_(50)、H_(100)和H_(200) 6组,每组3个重复,养殖试验在水库网箱(1.5 m×1.5 m×1.5 m)中进行。结果显示:(1)生长性能:实验中期(第8周),青鱼的增重率随养殖密度的增加呈先上升后下降趋势,且H_(200)组的青鱼增重率在养殖中期与L_(200)组相比有提高的趋势,但差异不显著(P>0.05),在实验后期(第16周)显著低于L_(200)组(P0.05),养殖密度和鱼粉水平对青鱼存活率与增重率有交互效应(P0.05)。...

To study the effects of fishmeal level and stocking density on the growth and immunity of juvenile black carp, a two-factor design of fishmeal level (10%, 20%) × culture density (50, 100, 200 tails/box) was applied. The young black carp (2.50±0.02) g were divided into 6 groups of L50, L100, L200, H50, H100 and H200 with 3 replicates in each group using reservoir cages (1.5 m×1.5 m×1.5 m). In the early stage of experiment (week 8), the weight gain rate of black carp increased at first and then decreased with the increase of the stocking dens...