| Influence of fasting on muscle composition and antioxidant defenses of market-size Sparus macrocephalus |
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| 作者姓名： | ZHANG Xiao-dong WU Tian-xing CAI Li-sheng ZHU Yong-fei |
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| 作者单位： | [1]School of Animal Sciences, Zhejiang University, Hangzhou 310027, China [2]Department of Chemistry, Zhejiang University, Hangzhou 310027, China [3]Key Laboratory for Molecular Design and Nutrition Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China |
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| 基金项目： | Project （No. 2006C12098） supported by the Science and Technology Department of Zhejiang Province, China |
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| 摘 要： | The study was conducted to investigate fasting effects on flesh composition and antioxidant defenses of market-size Sparus macrocephalus. Two hundred fish （main initial weight 580 g） were divided into two groups （control and fasted） and reared in 6 cages. After two weeks of adaptation, group I fasted for 28 d; group II was fed normally as a control. In 3, 7, 14, 21 and 28 d, 6 fish per group were sampled for proximate flesh composition, liver antioxidant enzyme activities and malondialdehyde flesh content analyses. In fasted fish, the reduction of lipid content in muscle occurred after day 3, and, compared to controls, the content of protein decreased from day 14, the activities of liver antioxidative enzymes superoxide dismutase （SOD） and glutathione peroxidase （GPX） increased from day 3, and flesh malondialdehyde levels increased from day 21. Flesh fat reduction shows that fasting may be used as a technique to reduce flesh lipid content in Sparus macrocephalus. However, considering flesh protein loss and the subsequent oxidative stress, the fasting technique should be used with precautions.
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| 关 键 词： | 抗氧化剂 禁食 肉质 黑鲷 |
| 收稿时间： | 2007-08-06 |
| 修稿时间： | 2007-10-19 |
Influence of fasting on muscle composition and antioxidant defenses of market-size Sparus macrocephalus |
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| ZHANG Xiao-dong WU Tian-xing CAI Li-sheng ZHU Yong-fei.Influence of fasting on muscle composition and antioxidant defenses of market-size Sparus macrocephalus[J].Journal of Zhejiang University Science,2007,8(12):906-911. |
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| Authors: | ZHANG Xiao-dong WU Tian-xing CAI Li-sheng ZHU Yong-fei |
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| Abstract: | The study was conducted to investigate fasting effects on flesh composition and antioxidant defenses of market-size Sparus macrocephalus. Two hundred fish (main initial weight 580 g) were divided into two groups (control and fasted) and reared in 6 cages. After two weeks of adaptation, group I fasted for 28 d; group II was fed normally as a control. In 3, 7, 14, 21 and 28 d, 6 fish per group were sampled for proximate flesh composition, liver antioxidant enzyme activities and malondialdehyde flesh content analyses. In fasted fish, the reduction of lipid content in muscle occurred after day 3, and, compared to controls, the content of protein decreased from day 14, the activities of liver antioxidative enzymes superoxide dismutase (SOD) and glutathione peroxidase (GPX) increased from day 3, and flesh malondialdehyde levels increased from day 21. Flesh fat reduction shows that fasting may be used as a technique to reduce flesh lipid content in Sparus macrocephalus. However, considering flesh protein loss and the subsequent oxidative stress, the fasting technique should be used with precautions. |
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| Keywords: | Antioxidant defenses Fasting Muscle composition Sparus macrocephalus |
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