Dietary phosphorus requirement of juvenile black seabream, Sparus macrocephalus

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 期刊论文

	Dietary phosphorus requirement of juvenile black seabream, Sparus macrocephalus
	Shao, Qingjun 1; Ma, Jingjing 1; Xu, Zirong 1; Hu, Wanglong 2; Xu, Junzhuo 3; Xie, Shouqi 4
刊名	AQUACULTURE
	2008-05-12
卷号	277 期号:1-2 页码:92-100
关键词	diet black seabream Sparus macrocephalus phosphorus requirement feeding and nutrition mineralization
ISSN号	0044-8486
通讯作者	Shao, QJ, Zhejiang Univ, Dept Anim Sci, Hangzhou 310029, Peoples R China
中文摘要	A growth trial was conducted to estimate the optimum requirement of dietary available phosphorus (P) for black seabream (Sparus macrocephalus) in indoor net cages (1.5x1.0x1.0 m). Triplicate groups of black seabream (11.45 +/- 0.02 g) were fed diets containing graded levels (0.18, 0.36, 0.54, 0.72, 0.89 and 1.07%) of available P to satiation for 8 weeks. The basal diet (diet 1), containing 0.18% available P, was supplemented with graded levels of monosodium phosphate (NaH2PO4 2H(2)O) to formulate five experimental diets. The fish were fed twice daily (08:00 h and 16:00 h) and reared in seawater (salinity, 26-29 g l(-1)) at a temperature of 28 +/- 1 degrees C. Dissolved oxygen during the experiment was above 5 mg l(-1). The specific growth rate (SGR), weight gain (WG), feed efficiency (FE) and protein efficiency ratio (PER) were all significantly improved by dietary phosphorus up to 0.54% (P<0.05) and then leveled off beyond this level. Hepatosomatic index (HSI) was inversely correlated with dietary phosphorus levels (P< 0.05). Efficiency of P utilization stabled in fish fed diets containing 0.18%-0.54% available P and then decreased dramatically with further supplementation of dietary phosphorus. Body composition analysis showed that the whole-body lipid, ash, calcium and phosphorus contents were all significantly affected by dietary available P concentration (P<0.05), however, no significance were found in whole-body calcium/phosphorus (Ca/P) ratios among all the treatments (P>0.05). Dietary phosphorus levels also affected the mineralization of vertebrae, skin and scale (P<0.05). Ca/P ratios in vertebrae and scale were not influenced by dietary P supplementation, while skin Ca/P ratio increased statistically with dietary available P levels (quadratic effect, P<0.001). The blood chemistry analysis showed that dietary available P had distinct effects on enzyme activities of alkaline phosphatase (ALP) and plasma lysozyme (LSZ), as well as contents of triacyglycerol (TG) and total cholesterol (T-CHO) (P<0.05). Broken-line analysis showed maximum weight gain (WG) was obtained at dietary available P concentrations of 0.55%. Quadratic analysis based on P contents in whole fish, vertebrae or scale indicated that the requirements were 0.81, 0.87 and 0.88%, respectively. Signs of phosphorus deficiency were characterized by poor growth, slightly reduced mineralization and an increase in body lipid content. (C) 2008 Published by Elsevier B.V.
英文摘要	A growth trial was conducted to estimate the optimum requirement of dietary available phosphorus (P) for black seabream (Sparus macrocephalus) in indoor net cages (1.5x1.0x1.0 m). Triplicate groups of black seabream (11.45 +/- 0.02 g) were fed diets containing graded levels (0.18, 0.36, 0.54, 0.72, 0.89 and 1.07%) of available P to satiation for 8 weeks. The basal diet (diet 1), containing 0.18% available P, was supplemented with graded levels of monosodium phosphate (NaH2PO4 2H(2)O) to formulate five experimental diets. The fish were fed twice daily (08:00 h and 16:00 h) and reared in seawater (salinity, 26-29 g l(-1)) at a temperature of 28 +/- 1 degrees C. Dissolved oxygen during the experiment was above 5 mg l(-1). The specific growth rate (SGR), weight gain (WG), feed efficiency (FE) and protein efficiency ratio (PER) were all significantly improved by dietary phosphorus up to 0.54% (P<0.05) and then leveled off beyond this level. Hepatosomatic index (HSI) was inversely correlated with dietary phosphorus levels (P< 0.05). Efficiency of P utilization stabled in fish fed diets containing 0.18%-0.54% available P and then decreased dramatically with further supplementation of dietary phosphorus. Body composition analysis showed that the whole-body lipid, ash, calcium and phosphorus contents were all significantly affected by dietary available P concentration (P<0.05), however, no significance were found in whole-body calcium/phosphorus (Ca/P) ratios among all the treatments (P>0.05). Dietary phosphorus levels also affected the mineralization of vertebrae, skin and scale (P<0.05). Ca/P ratios in vertebrae and scale were not influenced by dietary P supplementation, while skin Ca/P ratio increased statistically with dietary available P levels (quadratic effect, P<0.001). The blood chemistry analysis showed that dietary available P had distinct effects on enzyme activities of alkaline phosphatase (ALP) and plasma lysozyme (LSZ), as well as contents of triacyglycerol (TG) and total cholesterol (T-CHO) (P<0.05). Broken-line analysis showed maximum weight gain (WG) was obtained at dietary available P concentrations of 0.55%. Quadratic analysis based on P contents in whole fish, vertebrae or scale indicated that the requirements were 0.81, 0.87 and 0.88%, respectively. Signs of phosphorus deficiency were characterized by poor growth, slightly reduced mineralization and an increase in body lipid content. (C) 2008 Published by Elsevier B.V.
学科主题	Fisheries; Marine & Freshwater Biology
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Fisheries ; Marine & Freshwater Biology
研究领域[WOS]	Fisheries ; Marine & Freshwater Biology
关键词[WOS]	TROUT ONCORHYNCHUS-MYKISS ; SALMO-GAIRDNERI RICHARDSON ; COREGONUS-LAVARETUS L. ; RED-SEA BREAM ; RAINBOW-TROUT ; MINERAL REQUIREMENTS ; ATLANTIC SALMON ; ALKALINE-PHOSPHATASE ; ENZYME-ACTIVITIES ; MORONE-SAXATILIS
收录类别	SCI
语种	英语
WOS记录号	WOS:000255802100013
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8144]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Zhejiang Univ, Dept Anim Sci, Hangzhou 310029, Peoples R China 2.Zhejiang Univ, Dept Life Sci, Hangzhou 310029, Peoples R China 3.Marine Fisheries Res Inst Zhejiang Prov, Zhoushan 316100, Peoples R China 4.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Shao, Qingjun,Ma, Jingjing,Xu, Zirong,et al. Dietary phosphorus requirement of juvenile black seabream, Sparus macrocephalus[J]. AQUACULTURE,2008,277(1-2):92-100.
APA	Shao, Qingjun,Ma, Jingjing,Xu, Zirong,Hu, Wanglong,Xu, Junzhuo,&Xie, Shouqi.(2008).Dietary phosphorus requirement of juvenile black seabream, Sparus macrocephalus.AQUACULTURE,277(1-2),92-100.
MLA	Shao, Qingjun,et al."Dietary phosphorus requirement of juvenile black seabream, Sparus macrocephalus".AQUACULTURE 277.1-2(2008):92-100.