Metabolic responses to short starvation and re-feeding in rainbow trout (Oncorhynchus mykiss)

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• 作者：Maryam Azodi ; Eisa Ebrahimi ; Ebrahim Motaghi ; Vahid Morshedi
• 关键词：Starvation ; Re ; feeding ; Physiological parameters ; Morphological parameters ; Rainbow trout
• 刊名：Ichthyological Research
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：62
• 期：2
• 页码：177-183
• 全文大小：333 KB
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  6. Azodi M, Ebrahimi E, Farhadian O, Mahboobi-Soofiani N (2013) Response of rainbow trout ( / Oncorhynchus mykiss Walbum 1792) to short term starvation periods and refeeding. World J Fish Mar Sci 5:474-480
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  14. Caruso G, Denaro MG, Caruso R, Genovese L, Mancari F, Maricchiolo G (2012) Short fasting and refeeding in red porgy ( / Pagrus pagrus, Linnaeus 1758): response of some haematological, biochemical and non specific immune parameters. Mar Environ Res 81:18-5
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• 作者单位：Maryam Azodi (1) (2)
  Eisa Ebrahimi (1)
  Ebrahim Motaghi (1)
  Vahid Morshedi (3)
  
  1. Department of Fisheries, Faculty of Natural Resources, Isfahan University of Technology, 41635-3464, Isfahan, Iran
  2. Persian Gulf Research and Study Centre, Persian Gulf University, 7516913817, Bushehr, Iran
  3. Member of Young Researchers Club of Ilam Azad University, 6419943175, Ilam, Iran
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Zoology
  Ecology
  Animal Systematics/Taxonomy/ Biogeography
  Marine Ecology
  
• 出版者：Springer Japan
• ISSN：1616-3915

文摘

A feeding study was conducted to determine the effect of short-term starvation periods and subsequent re-feeding on some morphological and physiological parameters of rainbow trout (Oncorhynchus mykiss) fingerlings. Two hundred and seventy trout fingerlings (mean?±?SE, 17.5?±?0.06?g) were randomly distributed in 15 circular fiberglass tanks. The fish were exposed to five different feeding regimes: control, fed twice daily for 60?days; T1, one day starvation and two days re-feeding (20 cycles); T2, one day starvation and four days re-feeding (12 cycles); T3, three days starvation and 12 days re-feeding (four cycles), T4, four days starvation and 16 days re-feeding (three cycles). Blood samples were taken for biochemical analyses at the end of the experiment. The results indicated that plasma cortisol, glucose, total protein, cholesterol, albumin, low-density lipoprotein, uric acid, creatinine, high-density lipoprotein, alkaline phosphatase, and aspartate aminotransferase levels were not significantly different between the control and starved fish, but plasma triglyceride and glucose levels were significantly higher in the T4 group as compared to the control and other deprived groups. There were no significant differences in perivisceral fat index among the five groups. However, hepatosomatic index significantly decreased in the T3 group in comparison with other groups. The present study demonstrates that rainbow trout could tolerate short-term starvation periods and subsequent feeding without any significant health damage particularly regarding some morphological and physiological parameters.