Effect of temperature on growth and energy budget of juvenile cobia (Rachycentron canadum)

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	Effect of temperature on growth and energy budget of juvenile cobia (Rachycentron canadum)
	Sun, LH; Chen, HR; Huang, LM; waa-to@163.com
刊名	AQUACULTURE
	2006
卷号	261 期号:3 页码:872-878
关键词	Juvenile Cobia (Rachycentron Canadum) Temperature Growth Energy Budget
ISSN号	0044-8486
英文摘要	Growth and energy budget of juvenile cobia (initial body weight similar to 22 g) at various temperatures (23, 27, 31 and 35 degrees C) were investigated in this study. Maximal ration level (RLmax, %/day) increased as temperature (T, degrees C) increased from 23 degrees C to 31 degrees C but decreased at 35 degrees C, described as a quadratic equation: RLmax=-0.023T(2)+1.495T-17.52. Faecal production (f, mg g(-1) day(-1)) increased with increased temperature (T, degrees C), described as a power function: Inf=0.738lnT-0.806. As temperature increased, feed absorption efficiency in dry weight (FAE(d), %), protein (FAE(p), %) and energy (FAE(e), %) all increased first and then decreased, but the variation of feed absorption efficiency was small, with ranges of 89.59-91.08%, 92.91-94.71%, 93.92-95.32%, respectively. Specific growth rate in wet weight (SGR(w), %/day), dry weight (SGR(d), %/day), protein (SGR(p), %/day) and energy (SGR(e), %/day) showed a domed curve relative to temperature (T, degrees C), described as quadratic equations: SGR(w)=-0.068T(2)+3.878T-50.53, SGR(d)=-0.079T(2)+4.536T-59.64, SGR(p)=-0.084T(2)+4.783T-63.08 and SGR(e)=-0.082T(2)+4.654T-60.99, and SGR(w), SGR(d), SGR(p) and SGR(e) maximized at 28.5 degrees C, 28.6 degrees C, 28.4 degrees C, 28.5 degrees C, respectively, as calculated from the regression equations. The relationships between feed conversion efficiency in wet weight (FCEw, %), dry weight (FCEd, %), protein (FCEp, %), energy (FCEe, %) and temperature (T, degrees C) also took on a domed curve described as quadratic equations: FCEw=-0.726T(2)+39.71T-473.8, FCEd=-0.276T(2)+15.31T-190.6, FCEp=-0.397T(2)+22.05T-277.9 and FCEe=-0.350T(2)+19.39T-239.9, and FCEw, FCEd, FCEp and FCEe maximized at 27.4 degrees C, 27.8 degrees C, 27.7 degrees C and 27.7 degrees C, respectively, as calculated from the regression equations. Energy budget of juvenile cobia fed satiation was 100C=5F+67(U+R)+28G at water temperature 27 degrees C and 100C=5F+70(U+R)+25G at water temperature 31 degrees C, where C is food energy, F is faeces energy, (U+R) is excretion energy and metabolism energy, and G is growth energy. (c) 2006 Elsevier B.V. All rights reserved.
学科主题	Fisheries ; Marine & Freshwater Biology
URL标识	查看原文
资助项目	LMB
WOS记录号	WOS:000242469100006
公开日期	2011-07-03
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/4888]
专题	南海海洋研究所_中科院海洋生物资源可持续利用重点实验室
通讯作者	waa-to@163.com
推荐引用方式 GB/T 7714	Sun, LH,Chen, HR,Huang, LM,et al. Effect of temperature on growth and energy budget of juvenile cobia (Rachycentron canadum)[J]. AQUACULTURE,2006,261(3):872-878.
APA	Sun, LH,Chen, HR,Huang, LM,&waa-to@163.com.(2006).Effect of temperature on growth and energy budget of juvenile cobia (Rachycentron canadum).AQUACULTURE,261(3),872-878.
MLA	Sun, LH,et al."Effect of temperature on growth and energy budget of juvenile cobia (Rachycentron canadum)".AQUACULTURE 261.3(2006):872-878.