Literaturdatenbank
Literaturdatenbank |
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Chen, L.-P., & Huang, C.-H. (2011). Effects of dietary β-carotene levels on growth and liver vitamin a concentrations of the soft-shelled turtle, pelodiscus sinensis (wiegmann). Aquaculture Research, (early View).
Added by: Sarina Wunderlich (27 Mar 2011 16:16:33 UTC) |
| Resource type: Journal Article DOI: 10.1111/j.1365-2109.2010.02788.x BibTeX citation key: Chen2011 View all bibliographic details  |
Categories: General Keywords: Ernährung = nutrition, Pelodiscus, Pelodiscus sinensis, Schildkröten = turtles + tortoises, Trionychidae Creators: Chen, Huang Collection: Aquaculture Research |
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| Abstract |
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Trionychidae A feeding trial was conducted to evaluate the effect of dietary β-carotene level on the growth and liver vitamin A concentrations in soft-shelled turtles, Pelodiscus sinensis, fed a vitamin A-free diet. Soft-shelled turtles were fed diets containing 0, 14.5, 26.5, 47.5, 87.3, 112.8 and 163.8 mg β-carotene kg−1 for 10 weeks. Although it was not statistically significant due to high deviation within each group, mean weight gain of soft-shelled turtles fed the diet without β-carotene supplementation was the lowest among all test groups. Vitamin A concentrations in liver of turtles significantly (P<0.05) increased when dietary β-carotene level reached 47.5 mg kg−1 indicating that soft-shelled turtles were capable of converting β-carotene to vitamin A. Analysed by regression modelling, dietary β-carotene levels for optimal growth and maximal liver vitamin A contents of juvenile soft-shelled turtles fed the vitamin A-free diets were 49.1 and 88.7 mg kg−1 respectively.
Added by: Sarina Wunderlich |