Literaturdatenbank
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Zhou, X., Xie, M., Niu, C.-J., & Sun, R.-Y. (2003). The effects of dietary vitamin c on growth, liver vitamin c and serum cortisol in stressed and unstressed juvenile soft-shelled turtles (pelodiscus sinensis). Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 135(2), 263–270.
Added by: Admin (14 Aug 2008 20:36:29 UTC) |
| Resource type: Journal Article BibTeX citation key: Zhou2003 View all bibliographic details  |
Categories: General Keywords: Ernährung = nutrition, Pelodiscus, Pelodiscus sinensis, Physiologie = physiology, Schildkröten = turtles + tortoises, Trionychidae, Trionyx Creators: Niu, Sun, Xie, Zhou Collection: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
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| Abstract |
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Trionyx Pelodiscus sinensis 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, 5000 or 10000 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 0-10000 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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