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学科主题: Fisheries; Marine & Freshwater Biology
题名: Energy budget of Nile tilapia (Oreochromis niloticus) in relation to ration size
作者: Xie, SQ ; Cui, YB ; Yang, YX ; Liu, JK
通讯作者: Xie, SQ, ACAD SINICA,INST HYDROBIOL,WUHAN 430072,HUBEI,PEOPLES R CHINA
关键词: energy budget ; Oreochromis niloticus ; ration size
刊名: AQUACULTURE
发表日期: 1997
卷: 154, 期:1, 页:57-68
收录类别: SCI
摘要: Nile tilapia weighing 8.29-11.02 g were fed a practical diet at seven ration levels (starvation, 0.5, 1, 2, 3, 4% body weight per day and satiation) twice a day at 30 degrees C. Feed consumption, apparent digestibility, nitrogenous excretion and growth were determined directly, and heat production was calculated by difference of energy budget. The relationship between specific growth rate in wet weight (SGR(w), percentage per day) and ration size (RL, percentage per day) was a decelerating curve described as SGR(w) = 2.98 (1 - e(-0.61(RL-0.43))). The apparent digestibility coefficients for dry matter and protein showed a decreasing pattern with increasing ration while the apparent digestibility coefficient of energy was not significantly affected by ration size. The proportion of gross energy intake lost in nitrogenous excretion tended to decrease with increasing ration. Feed efficiency was highest, and the proportion of gross energy intake channelled to heat production was lowest, at an intermediate ration level (2% per day). The energy budget at the satiation level was: 100IE = 16.9FE + 1.2(ZE + UE) + 62.3HE + 19.6RE, where IE, FE, (ZE + UE), HE and RE represent gross energy intake, faecal energy, excretory (non-faecal) energy loss, heat production and recovered energy (growth), respectively. (C) 1997 Elsevier Science B.V.
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/10256
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Xie, SQ; Cui, YB; Yang, YX; Liu, JK.Energy budget of Nile tilapia (Oreochromis niloticus) in relation to ration size,AQUACULTURE,1997,154(1):57-68
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