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学科主题: Fisheries; Marine & Freshwater Biology
题名: Growth, faecal production, nitrogenous excretion and energy budget of juvenile yellow grouper (Epinephelus awoara) relative to ration level
作者: Sun, LH ; Chen, HR ; Huang, LM
通讯作者: waa-to@163.com
关键词: juvenile yellow grouper (Epinephelus awoara) ; ration level ; growth ; faecal production ; nitrogenous excretion ; energy budget
刊名: AQUACULTURE
发表日期: 2007
卷: 264, 期:40547, 页:228-235
收录类别: sci
部门归属: Chinese Acad Sci, S China Sea Inst Oveanol, Guangzhou 510301, Peoples R China; Chinese Acad Sci, Marine Biol Res Stn Daya Bay, Shenzhen 518120, Peoples R China
项目归属: LMB
摘要: Growth, faecal production, nitrogenous excretion and energy budget of juvenile yellow grouper (initial body weight 5.5 g or so) at various ration levels (starvation, 0.5%, 1% and 2% of initial body weight per day, and satiation) were investigated in this study. Faecal production (f, mg g(-1) d(-1)) and nitrogenous excretion (u, mg g(-1) d(-1)) increased markedly with increased ration level (RL, % per day), described as f-0.483RL+0.112 for faecal production and u=0.218RL+0.219 for nitrogenous excretion, respectively. Feed absorption efficiency (FAE, %) increased as ration increased with ranges of 91.4-94.0%, 95.6-97.3% and 96.5-97.6% for FAE(d), FAE(p) and FAE(c), respectively, but all of the variations were small. Relationships between specific growth rate in wet weight (SGR(w), % per day), dry weight (SGR(d), % per day), protein (SGR(p), % per day), energy (SGR(e), % per day) and ration level (RL, % per day) were linear and described as simple equations SGR(w)=0.738RL-0.764, SGR(d)=0.871RL-0.928, SGR(p)=0.904RL-0.966 and SGR(c) = 1.03 8RL-1.060. Feed conversion efficiency in wet weight (FCEw %), dry weight (FCEd, %), protein (FCEp, %) and energy (FCE,, %) all increased as ration increased and maximized at ad libitum ration level. Energy budgets of juvenile Epinephelits awoara at satiation ration level was: 100C=2F+4U+75R+19G or 100A=80R+20G, where C is food energy, A is assimilated energy, F is faeces energy, U is excretion energy, R is metabolism energy and G is growth energy. (c) 2007 Elsevier B.V. All rights reserved.
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WOS记录号: WOS:000245659900027
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4924
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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Recommended Citation:
Sun, LH; Chen, HR; Huang, LM.Growth, faecal production, nitrogenous excretion and energy budget of juvenile yellow grouper (Epinephelus awoara) relative to ration level,AQUACULTURE,2007,264(40547):228-235
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