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박건현,윤현호,이승한,Fasil Taddese,배승철 한국수산과학회 2015 Fisheries and Aquatic Sciences Vol.18 No.2
This experiment was conducted to evaluate the combined effects of vitamin C and E on tissue mercury (Hg) burden, as well as overall growth-related problems occurred in juvenile olive flounder Paralichthys olivaceus as a result of methylmercury (MeHg) accumulation. Nine experimental diets containing three different vitamin C (0, 200 and 400 mg/kg diet in the form of L-ascorbyl-2-monophosphate) and vitamin E (0, 100 and 200 mg/kg diet in the form of DL-α-tocopheryl acetate) concentrations with the same Hg (20 mg/kg diet in the form of MeHg) content in 3 × 3 factorial design were fed to triplicate groups of juvenile olive flounder. Juvenile olive flounder had a mean weight of 2.3 ± 0.05 g (mean ± SD) and were fed in a flow-through system for 8 weeks. Fish that were fed 400 mg/kg vitamin C with 100 and 200 mg/kg vitamin E showed significantly higher (P < 0.05) weight gain (WG). Feed efficiency (FE), specific growth rate (SGR) and the protein efficiency ratio (PER) were significantly (P < 0.05) higher for fish fed diets containing 400 mg/kg vitamin C at all vitamin E levels, and also for those supplemented with vitamin C and E equally at a concentration of 200 mg/kg. Significantly lower (P < 0.05) Hg levels were observed in muscle and kidney from fish fed 200 and 400 mg/kg vitamin C at all vitamin E levels. Thus, we conclude that poor growth performance from MeHg could be ameliorated, and tissue Hg burden could be reduced, by supplementing dietary vitamin C (200 and 400 mg/kg) with vitamin E (100 and 200 mg/kg) in juvenile olive flounder.
Park, Gunhyun,Yun, Hyeonho,Lee, Seunghan,Taddese, Fasil,Bai, Sungchul C. The Korean Society of Fisheries and Aquatic Scienc 2015 Fisheries and Aquatic Sciences Vol.18 No.2
This experiment was conducted to evaluate the synergistic effects of vitamin C and E on methylmercury (MeHg) toxicity in juvenile olive flounder Paralichthys olivaceus. In a $3{\times}3$ factorial design, 9 experimental diets containing three different vitamin C (0, 200 or 400 mg/kg diet in the form of l-ascorbyl-2-monophosphate) and vitamin E (0, 100 or 200 mg/kg diet in the form of dl-${\alpha}$-tocopheryl acetate) levels with the Hg toxicity level (20 mg/kg diet in the form of MeHg) were formulated. Triplicate groups of fish averaging $2.3{\pm}0.05g(mean{\pm}SD)$ were fed one of the 9 diets in a flow through system for 8 weeks. Fish fed 400 mg vitamin C/kg diet with 100 or 200 mg vitamin E/kg diet showed significantly (P < 0.05) higher weight gain (WG) than did fish fed the other diets. Fish fed 400 mg vitamin C/kg diet at all vitamin E levels and those which fed vitamin C and E equally at a rate of 200 mg/kg diet showed significantly (P < 0.05) higher feed efficiency (FE), specific growth rate (SGR) and protein efficiency ratio (PER) than did fish fed the other diets. Fish fed 200 and 400 mg vitamin C/kg diet exhibited significantly (P < 0.05) lower Hg concentration in their muscle as well as kidney than did fish fed the other diets. Therefore, these results clearly indicated that the synergistic effects of these two vitamins on MeHg toxicity by supplementing dietary vitamin C (200 and 400 mg/kg diet) with vitamin E (100 and 200 mg/kg diet) in juvenile olive flounder.