Comparing the efficacy of dietary a-tocopherol with that of DL-a-tocopheryl acetate, both either alone or in combination with ascorbic acid, on growth and stress resistance of angelfish, Pterophylum scalare, juveniles
Norouzitallab, P.; Farhangi, M.; Babapour, M.; Rahimi, R.; Sinha, A.K.; Baruah, K. (2009). Comparing the efficacy of dietary a-tocopherol with that of DL-a-tocopheryl acetate, both either alone or in combination with ascorbic acid, on growth and stress resistance of angelfish, Pterophylum scalare, juveniles. Aquacult. Int. 17(3): 207-216. dx.doi.org/10.1007/s10499-008-9192-8 In: Aquaculture International. Springer: London. ISSN 0967-6120; e-ISSN 1573-143X, more |  |
| Keywords | Ascorbic acid
Biological phenomena > Adaptations > Osmotic adaptations
Developmental stages > Juveniles
Diets
Feeding
Population functions > Growth
Seawater
Stress
Stress
Stress (biological)
Survival
Vitamins
Artemia Leach, 1819 [WoRMS]; Pterophylum scalare
Marine/Coastal; Fresh water | | Author keywords | Ascorbic acid; Vitamin E forms; Artemia; Angelfish; Stress |
| Authors | | Top | - Norouzitallab, P., more
- Farhangi, M.
- Babapour, M.
| - Rahimi, R.
- Sinha, A.K., more
- Baruah, K., more
| |
| Abstract | This study aimed to compare the efficacy of dietary a-tocopherol with that of dl-a-tocopheryl acetate, both either alone or in combination with vitamin C (ascorbic acid), on the growth performance, survival, and stress resistance of angelfish, Pterophylum scalare, juveniles. Juveniles were fed ad libitum for four weeks with Artemia enriched with no vitamins (control), vitamin C (Tc), a-tocopherol (Ta), DL-a-tocopheryl acetate (TDL ), a-tocopherol and vitamin C (Ta+C), and dl-a-tocopheryl acetate and vitamin C (T DL+C). After four weeks, an osmotic stress test was performed using seawater (25 g/L) to evaluate juvenile’s resistance to stress. Whole-body glucose and cortisol were used as stress indicators. At the end of the feeding trial, growth performance and survival of the juveniles fed vitamin-enriched Artemia were significantly (P < 0.05) higher than for the control fish. Best performance was recorded for the Ta+C group. Survival, however, was not significantly (P > 0.05) different between the vitamin-fed groups. Osmotic stress significantly elevated the stress indicators, whole-body cortisol and glucose levels (P < 0.05), highest and lowest values being observed in control and Ta+C groups, respectively. Survival after osmotic stress of juveniles fed the Ta+c diet was significantly higher (by 46.2%, P < 0.001) than for controls. Results suggested that a-tocopherol has greater efficacy than DL-a-tocopheryl acetate and enriching Artemia with a-tocopherol and vitamin C together improves growth performance, survival, and stress resistance of angelfish juveniles. |
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