| Effects of diet and body size on phosphorus utilization of Liza haematocheila T. ＆ S. |
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| 引用本文： | 康斌,线薇薇,武云飞.Effects of diet and body size on phosphorus utilization of Liza haematocheila T. ＆ S.[J].中国海洋与湖沼学报,2008,26(2):157-161. |
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| 作者姓名： | 康斌 线薇薇 武云飞 |
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| 基金项目： | Supported by the NNSF of China （No.40206001） and the Key Laboratory of Mariculture of Ministry of Education, Ocean University of China （No.200404） |
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| 摘 要： | A 21-d laboratory experiment was conducted to study, the phosphorus （P） utilization of two different diets by redlip mullet Liza haematocheila T. ＆ S. Sand-filtered water in salinity 30 and temperatare 25℃ was used. Twenty-nine fish individuals were divided into three groups： 11 to group 1 （G1） fed on diet 1, 11 to group 2 （G2） fed on diet 2, and 7 to contrast group. Diet 1 was a commercial feed, more valuable in nutrition than diet 2 that similar to natural detritus. The results show the intake phosphorus （IP） of G1 was significantly higher than that of G2, and both increased linearly with body size at a certain amount of diet. The retention phosphorus （RP） in fish of G1 was lower than G2. The relationship between retention phosphorus and body size was positive and stronger in G2. Significant difference in faecal phosphorus （FP） was found between G1 and G2. Body size significantly impacted the excretion phosphorus （EP） in G1 but G2. The loss of intake phosphorus in G1 was 10.83-20.27 mg per g fish weight gain, higher than that in G2 for 6.63-9.56. Of the phosphorus, about 10% was allocated into growth, 50% in faeces, and the rest lost in excretion. The main part of phosphorus was lost in faeces but excretion. The phosphorus budget of the fish could be described as 100IP = 7.40RP ＋ 47.39FP ＋ 36.63EP （Diet 1） or 100IP = 11.93RP ＋ 56.64FP ＋ 21.76EP （Diet 2）.
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| 关 键 词： | 磷 食物 身体尺寸 动物研究 |
| 收稿时间： | 10 April 2008 |
Effects of diet and body size on phosphorus utilization of <Emphasis Type="Italic">Liza haematocheila</Emphasis> T. &; S. |
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| Bin Kang,Weiwei Xian,Yunfei Wu.Effects of diet and body size on phosphorus utilization of Liza haematocheila T. &; S.[J].Chinese Journal of Oceanology and Limnology,2008,26(2):157-161. |
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| Authors: | Bin Kang Weiwei Xian Yunfei Wu |
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| Institution: | [1]Key Laboratory of Ecology and Environmental Sciences, Institute of Oceanology, The Chinese Academy of Sciences, Qingdao 266071, China [2]Fishery College, Ocean University of China, Qingdao 266003, China |
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| Abstract: | A 21-d laboratory experiment was conducted to study, the phosphorus (P) utilization of two different diets by redlip mullet
Liza haematocheila T. & S. Sand-filtered water in salinity 30 and temperature 25°C was used. Twenty-nine fish individuals were divided into
three groups: 11 to group 1 (G1) fed on diet 1, 11 to group 2 (G2) fed on diet 2, and 7 to contrast group. Diet 1 was a commercial
feed, more valuable in nutrition than diet 2 that similar to natural detritus. The results show the intake phosphorus (IP)
of G1 was significantly higher than that of G2, and both increased linearly with body size at a certain amount of diet. The
retention phosphorus (RP) in fish of G1 was lower than G2. The relationship between retention phosphorus and body size was
positive and stronger in G2. Significant difference in faecal phosphorus (FP) was found between G1 and G2. Body size significantly
impacted the excretion phosphorus (EP) in G1 but G2. The loss of intake phosphorus in G1 was 10.83–20.27 mg per g fish weight
gain, higher than that in G2 for 6.63–9.56. Of the phosphorus, about 10% was allocated into growth, 50% in faeces, and the
rest lost in excretion. The main part of phosphorus was lost in faeces but excretion. The phosphorus budget of the fish could
be described as 100IP = 7.40RP + 47.39FP + 36.63EP (Diet 1) or 100IP = 11.93RP + 56.64FP + 21.76EP (Diet 2).
Supported by the NNSF of China (No.40206001) and the Key Laboratory of Mariculture of Ministry of Education, Ocean University
of China (No.200404) |
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| Keywords: | Keyword" target="_blank">Keyword Liza haematocheila T & S phosphorus diet body size |
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