不同投喂率对南方鲇稚鱼生长和存活率的影响 |
Impacts of Different Feeding Rates on the Growth and Survival Rate of Silur meridionalis Juvenile |
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DOI: |
中文关键词:南方鲇 投喂率 存活率 生长 |
英文关键词:Silur meridionalis feeding rate survival quotiety growth |
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中文摘要: |
以6个水丝蚓投喂水平培育6日龄南方鲇稚鱼,测定了不同投喂率下稚鱼的摄食水平、生长、存活率和残食率。结果表明,鱼苗体长小于5cm时,投喂鱼苗体重60%的饵料鱼苗生长最快,特定生长率高达19.1%;体长大于5cm时,体长增长和体重特定生长率以50%投喂率组较高,但与60%投喂率组的差异不显著。A、B、C、D、E和F组(分别投喂30%、40%、50%、60%、70%和80%稚鱼体重的饵料)的存活率分别为56%、75%、87%、89%、91%和90%。A、B组的残食率较高,分别是30%和19%;E、F组最小,分别是4%和4.5%。
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英文摘要: |
Growth and survival rates of 6 day old Silur meridionalis juveniles feeding on Limnodrilus at 6 different levels for 21 days were investigated. The results showed that the juveniles at 60% feeding rate grew faster than any other levels when the body length was less than 5 centimeters and 50% feeding rate resulted in faster growth with more than 5 centimeters. The survival rates of group A,B,C,D,E and F(feeding quotiety were 30% ,40% ,50%, 60% ,70% and 80% )were 56% ,75% ,89% ,93% ,94% and 91% respectively. The cannibal rate of A and B was 30% and 19%, higher than all other groups. The cannibal rate of group E and F was lower, 4% and 4.5% respectively. |
史则超,陈孝煊,王卫民,姬伟.2008.不同投喂率对南方鲇稚鱼生长和存活率的影响[J].水生态学杂志,29(1):93-0. |
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