Influence of diets supplemented with vitamins C and E on pirarucu (Arapaima gigas) blood parameters
This study evaluated the influence of diets supplemented with 500, 800, 1200 mg kg- 1 of vitamin C (ascorbic acid or AA) and vitamin E (α-tocopherol or α-T) on the physiological responses of pirarucu fed for 2 months. Weight and mortality were not affected by dietary vitamin type or their concentrat...
| Autor principal: | Andrade, Jaqueline Inês Alves de |
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| Outros Autores: | Ono, Eduardo Akifumi, Menezes, Glauber Cruz de, Brasil, Elenice Martins, Roubach, Rodrigo, Urbinati, E. C., Tavares-Dias, Marcos, Marcon, Jaydione Luíz, Affonso, Elizabeth Gusmão |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18695 |
| Resumo: |
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This study evaluated the influence of diets supplemented with 500, 800, 1200 mg kg- 1 of vitamin C (ascorbic acid or AA) and vitamin E (α-tocopherol or α-T) on the physiological responses of pirarucu fed for 2 months. Weight and mortality were not affected by dietary vitamin type or their concentrations. Significant increase (p < 0.05) on the red blood cells count was obtained on treatments with 800 and 1200 mg AA kg- 1 and on the hemoglobin concentration on treatment with 500 mg α-T kg- 1 relatively to control. Mean corpuscular volume presented a significant decrease (p < 0.05) on treatment with 800 and 1200 mg AA kg-1 when compared to control. Mean corpuscular hemoglobin concentration was significantly high (p < 0.05) on treatment with 500 mg α-T kg- 1. Only in vitamin C treatments, we noticed a significant increase (p < 0.05) in the number of leucocytes relative to control. All fish in the vitamin-supplemented treatments, except 500 mg AA kg- 1, had high total protein values compared to control. Fish treated with 800 or 1200 mg α-T kg- 1 also showed increases in plasma glucose concentrations. Our results suggest that 800 and 1200 mg AA kg- 1 are probably the most suitable concentrations for pirarucu diets, although high vitamin E diets are not necessary for quantitative leucocyte increases for this species. © 2006 Elsevier Inc. All rights reserved. |