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Effects of dietary vitamin E level on growth and tissue lipid peroxidation of soft‐shelled turtle, Pelodiscus sinensis (Wiegmann)
Author(s) -
Huang ChenHuei,
Lin WayYee
Publication year - 2004
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2004.01105.x
Subject(s) - biology , lipid peroxidation , vitamin e , vitamin , turtle (robot) , feed conversion ratio , vitamin c , endocrinology , zoology , medicine , antioxidant , food science , body weight , biochemistry , ecology
A feeding trial was conducted to determine the effect of dietary vitamin E supplementation on growth, liver lipid peroxidation and liver and muscle vitamin E level of soft‐shelled turtle, Pelodiscus sinensis . Eight experimental diets analysed to contain 0–457 IU vitamin E kg −1 were fed to juvenile soft‐shelled turtle of 4.8 g initial body weight for 12 weeks. Weight gain (WG) of the turtles fed the diet containing no vitamin E was significantly lower than those fed diets containing 83–457 IU vitamin E kg −1 ( P <0.05). Feed conversion ratio and protein efficiency ratio showed similar trends to that of WG. No significant difference ( P >0.05) was found in whole‐body composition among turtles fed the different diets. Dietary vitamin E requirement using WG as the response and estimated using the broken‐line regression model is approximately 88 IU kg −1 . Liver and muscle vitamin E content increased when dietary vitamin E level increased. Ascorbate‐induced lipid peroxidation in liver tissue of turtles fed diets containing 0 and 17 IU vitamin E kg −1 was significantly ( P <0.05) greater than those fed diets containing high vitamin E (≥35 IU kg −1 ).