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Title: Effect of high levels of dietary vitamin C on the blood responses of matrinxã (Brycon amazonicus)
Authors: Affonso, Elizabeth Gusmão
Silva, Elisângela da Costa
Tavares-Dias, Marcos
Menezes, Glauber Cruz de
Carvalho, Cristiane Suely Melo de
Nunes, Érica da Silva Santiago
Ituassú, Daniel Rabello
Roubach, Rodrigo
Ono, Eduardo Akifumi
Fim, Jorge Daniel Indrusiak
Marcon, Jaydione Luíz
Keywords: Ascorbic Acid
Animals Experiment
Brycon Amazonicus
Controlled Study
Diet Supplementation
Glucose Blood Level
Leukocyte Count
Nutritional Assessment
Protein Blood Level
Vitamin Intake
Vitamin Supplementation
Weight Gain
Issue Date: 2007
metadata.dc.publisher.journal: Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology
metadata.dc.relation.ispartof: Volume 147, Número 2 SPEC. ISS., Pags. 383-388
Abstract: Juvenile matrinxã (Brycon amazonicus) were fed with different dietary vitamin C (ascorbic acid or AA) concentrations for 2 months in order to evaluate its effect on the physiological condition of this species. Five treatments were tested: Reference diet-RD (350 mg AA kg- 1 and 45% crude protein commercial feed); C400, C500, C600 and C800 with supplementation of 400, 500, 600 and 800 mg AA kg- 1. Fish fed 800 mg AA kg- 1 supplemented diets presented greater weight gain and survival. Hematocrit, hemoglobin concentrations and erythrocytes showed significant increase (p < 0.05) in C600 and C800 relatively to the others. Total leukocyte values were significantly higher in fish fed vitamin C supplemented diets relatively to those fed RD and leukocytes count of C600 and C800 were the highest among the treatments. Monocytes were the only cells of fish defense mechanism that presented variation, and C600 and C800 presented the lowest values (P < 0.05). Glucose level was significantly different relatively to RD only in C400 and the plasmatic total protein values for fish fed vitamin C supplemented diets were higher than for fish fed the RD. Fish plasmatic ions (Na+ and Cl-) were significantly lower for C500, C600 and C800 relatively to C400 and RD. The physiological profile and the growth performance of matrinxã suggest that diet supplemented with 800 mg AA kg- 1 can improve its performance and increase the survival rate. © 2007 Elsevier Inc. All rights reserved.
metadata.dc.identifier.doi: 10.1016/j.cbpa.2007.01.004
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