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题名: Growth and energy budget of juvenile lenok Brachymystax lenok in relation to ration level
作者: Liu Yang1, 2, 3; Li Zhongjie1; Zhang Tanglin1; Yuan Jing1; Mou Zhenbo3; Liu Jiashou1
通讯作者: Liu, JS (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
关键词: ration level ; growth ; energy budget ; Brachymystax lenok
刊名: CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
发表日期: 2015-03-01
DOI: 10.1007/s00343-015-3349-x
卷: 33, 期:2, 页:347-355
收录类别: SCI
文章类型: Article
部门归属: [Liu Yang ; Li Zhongjie ; Zhang Tanglin ; Yuan Jing ; Liu Jiashou] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China ; [Liu Yang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; [Liu Yang ; Mou Zhenbo] Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Harbin 150070, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]: Limnology ; Oceanography
研究领域[WOS]: Marine & Freshwater Biology ; Oceanography
英文摘要: We evaluated the effect of ration level (RL) on the growth and energy budget of lenok Brachymystax lenok. Juvenile lenok (initial mean body weight 3.06 +/- 0.13 g) were fed for 21 d at five different ration levels: starvation, 2%, 3%, 4% bwd (body weight per day, based on initial mean values), and apparent satiation. Feed consumption, apparent digestibility, and growth were directly measured. Specific growth rates in terms of wet weight, dry weight, protein, and energy increased logarithmically with an increase in ration levels. The relationship between specific growth rate in terms of wet weight (SGR(w), %/d) and RL (%) was characterized by a decelerating curve: SGR(w)=-1.417+3.166ln(RL+1). The apparent digestibility coefficients of energy exhibited a decreasing pattern with increasing ration level, and there was a significant difference among different RLs. Body composition was significantly affected by ration size. The relationship between feed efficiency rate in terms of energy (FERe) and RL was: FERe=-14.167+23.793RL-3.367(RL)(2), and the maximum FERe was observed at a 3.53% ration. The maintenance requirement for energy of juvenile lenok was 105.39 kJ BW (kg)(-0.80)/d, the utilization efficiency of DE for growth was 0.496. The energy budget equation at satiation was: 100IE=29.03FE+5.78(ZE+UE)+39.56 HE+25.63 RE, where IE is feed energy, FE is fecal energy, ZE+UE is excretory energy, HE is heat production, and RE is recovered energy. Our results suggest that the most suitable feeding rate for juvenile lenok aquaculture for wet weight growth is 2.89% bwd, whereas for energy growth, the suggested rate is 3.53% bwd at this growth stage.
关键词[WOS]: SALMO-TRUTTA L ; FOOD-CONSUMPTION ; NITROGENOUS EXCRETION ; OREOCHROMIS-NILOTICUS ; RAINBOW-TROUT ; NILE TILAPIA ; BODY-SIZE ; TEMPERATURE ; BIOENERGETICS ; CATFISH
语种: 英语
WOS记录号: WOS:000351156800007
ISSN号: 0254-4059
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/23865
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Harbin 150070, Peoples R China
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