| The effects of dietary vitamin C on growth, liver vitamin C and serum cortisol in stressed and unstressed juvenile soft-shelled turtles (Pelodiscus sinensis). | |
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MedLine Citation:
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PMID: 12781826 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We studied the effect of dietary vitamin C on growth, liver vitamin C and serum cortisol levels in stressed and unstressed juvenile soft-shelled turtles. Turtles were fed with vitamin C supplementation at dosages of 0, 250, 500, 2500, 5,000 or 10,000 mg/kg diet for 4 weeks. Vitamin C supplementation exerted significant effects on specific growth rate and liver vitamin C concentrations. The specific growth rate peaked in the group fed at 500 mg/kg diet, while liver vitamin C levels increased with increasing dietary vitamin C levels. Serum cortisol concentrations did not differ between groups of turtles fed diets supplemented with vitamin C in the range of 0-10,000 mg/kg. After acid stress, hepatic vitamin C levels were unaffected, while serum cortisol in the control group was significantly elevated (P<0.01). The other five groups of turtles did not show significant changes in serum cortisol compared with pre-stress levels. |
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Authors:
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Xianqing Zhou; Mengxia Xie; Cuijuan Niu; Ruyong Sun |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Comparative biochemistry and physiology. Part A, Molecular & integrative physiology Volume: 135 ISSN: 1095-6433 ISO Abbreviation: Comp. Biochem. Physiol., Part A Mol. Integr. Physiol. Publication Date: 2003 Jun |
Date Detail:
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Created Date: 2003-06-03 Completed Date: 2004-11-02 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9806096 Medline TA: Comp Biochem Physiol A Mol Integr Physiol Country: United States |
Other Details:
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Languages: eng Pagination: 263-70 Citation Subset: IM |
Affiliation:
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Ministry of Education, Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Life Sciences, Beijing Normal University, Beijing 100875, PR China. xianqingzhou@yahoo.com.cn |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Ascorbic Acid / administration & dosage, analysis, pharmacology* Diet / veterinary Dose-Response Relationship, Drug Hydrocortisone / blood Liver / drug effects, metabolism* Stress, Physiological / blood, chemically induced Turtles / blood, growth & development, physiology* |
| Chemical | |
Reg. No./Substance:
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50-23-7/Hydrocortisone; 50-81-7/Ascorbic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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