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      Growth and hematology of juvenile pacu Piaractus mesopotamicus (Holmberg 1887) fed with increasing levels of vitamin E (DL-α-tocopheryl acetate)

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          Abstract

          Intensive fish production systems are characterized by 100% artificial feeding, so any dietary imbalances or deficiencies may lead to diseases outbreaks and economic losses. This study was set out to determine the effects of increasing levels of dietary vitamin E on growth and hematology of juvenile pacu. Fishes were fed for 90 days, twice a day until apparent satiation with semi-purified diets containing 0.0; 25; 50; 150; 300 or 600 mg.kg−1 diet DL-α-tocopheryl acetate in a completely randomized design trial (n=4); biometrical and hematological data were collected and analyzed. Fishes fed with vit E diet (150 mg.kg−1) showed higher (p<0.05) weight gain and specific growth. Hematocrit, erythroblast number and total plasma protein were increased (p<0.05) in fishes fed diet with no vit E diet. Vitamin E supplementation in artificial diets for pacu is essential for growth and maintenance of normal erythropoiesis.

          Translated abstract

          Sistemas intensivos de produção utilizam 100% de dietas artificiais sendo que, qualquer imbalanço ou deficiência de algum nutriente pode ocasionar surtos de doenças e perdas econômicas. O presente estudo determinou o efeito de níveis crescentes de vitamina E na dieta sobre o desempenho e hematologia de juvenis de pacu. Os peixes foram alimentados por 90 dias até aparente saciedade com dietas semi purificadas contendo 0,0; 25; 50; 150; 300 ou 600 mg.kg−1 de DL-α-tocoferil-acetato, rações em um delineamento experimental inteiramente casualizado (n=4). Parâmetros de desempenho e hematológicos foram coletados e analisados. Peixes alimentados com ração de 150 mg.kg−1 de vit E apresentaram maior ganho de peso (p<0,05) e taxa de crescimento específico. Hematócrito, número de eritroblastos e proteina total plasmática foram maiores (p<0,05) nos peixes alimentados com a dieta insenta de vitamina E. O suplemento de vitamina E em dietas artificiais é essencial para o crescimento e a manutenção da eritropoiese nos valores normais para a espécie.

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            Nova classificação climática do Estado do Rio Grande do Sul

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                aabc
                Anais da Academia Brasileira de Ciências
                An. Acad. Bras. Ciênc.
                Academia Brasileira de Ciências (Rio de Janeiro )
                1678-2690
                March 2013
                : 85
                : 1
                : 385-393
                Affiliations
                [1 ] Universidade Tecnológica Federal do Paraná Brazil
                [2 ] Universidade Federal Rural de Pernambuco Brazil
                [3 ] Universidade de São Paulo Brazil
                Article
                S0001-37652013000100385
                10.1590/S0001-37652013005000036
                46bfceb9-163a-4039-bbdd-507a9f240f22

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0001-3765&lng=en
                Categories
                MULTIDISCIPLINARY SCIENCES

                fish nutrition,hematology,Piaractus mesopotamicus,vitamin E,nutrição de peixes,hematologia,vitamina E

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