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Title: Influence of diets supplemented with vitamins C and E on pirarucu (Arapaima gigas) blood parameters
Authors: Andrade, Jaqueline Inês Alves de
Ono, Eduardo Akifumi
Menezes, Glauber Cruz de
Brasil, Elenice Martins
Roubach, Rodrigo
Urbinati, E. C.
Tavares-Dias, Marcos
Marcon, Jaydione Luíz
Affonso, Elizabeth Gusmão
Keywords: Alpha Tocopherol
Ascorbic Acid
Animals Experiment
Arapaima Gigas
Blood Examination
Body Weight
Controlled Study
Diet Supplementation
Erythrocyte Count
Glucose Blood Level
Hemoglobin Determination
Leukocyte Count
Mean Corpuscular Volume
Arapaima Gigas
Issue Date: 2007
metadata.dc.publisher.journal: Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology
metadata.dc.relation.ispartof: Volume 146, Número 4, Pags. 576-580
Abstract: 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.
metadata.dc.identifier.doi: 10.1016/j.cbpa.2006.03.017
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