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https://locus.ufv.br//handle/123456789/30874
Tipo: | Artigo |
Título: | Optimal feeding frequency for Heros severus (Heckel, 1840), an Amazon ornamental fish |
Autor(es): | Paixão, Daércio José de Macedo Ribeiro Brabo, Marcos Ferreira Soares, Lourdes Marília Oliveira Campelo, Daniel Abreu Vasconcelos Veras, Galileu Crovatto |
Abstract: | The influence of feeding frequency on growth performance, batch uniformity, and survival rate of severum (Heros severus) larvae and juveniles was investigated in two experiments. In the first, 200 five-day-old severum larvae with 3.20±0.31 mg and 6.20±0.39 mm were randomly distributed into 20 aquaria (1 L) and fed 500 Artemia nauplii larvae−1 day−1 for 15 days. In the second, 120 severum juveniles, 178.19±33.59 mg and 1.82±0.09 cm, were randomly distributed into 15 aquaria (300 L) and hand-fed a commercial diet (400.0 g kg−1 crude protein and 21.2 kJ g−1 gross energy) until apparent satiety for 30 days. For both experiments, feeding frequencies of one, two, three, four, and five meals day−1 were evaluated. We used four replicates for the first experiment and three for the second. At the end of both experiments, survival rate and batch uniformity were unaffected by the feeding frequency. Severum larvae fed three, four, and five meals day−1 showed higher final weight, weight gain, and specific growth rate, but only the larvae fed five meals day−1 showed higher final length and length gain than those fed once and twice day−1. Severum juveniles fed two, four, and five meals day−1 showed higher final weight, weight gain, and specific growth rate. Growth performance parameters of final length and length gain were not affected by feeding frequencies. Thus, we recommend that the optimal feeding frequency for severum larvae fed Artemia nauplii is three meals day−1 and for juvenile severum fed a commercial diet, the optimal frequency is two meals day−1 |
Palavras-chave: | Amazon fish food management growth performance nutrition ornamental fish |
Editor: | Brazilian Journal of Animal Science |
Citação: | Paixão, D. J. M. R.; Brabo, M. F.; Soares, L. M. O.; Campelo, D. A. V. and Veras, G. C. 2019. Optimal feeding frequency for Heros severus (Heckel, 1840), an Amazon ornamental fish. Revista Brasileira de Zootecnia 48:e20170055 |
Tipo de Acesso: | Creative Commons Attribution License |
Identificador DOI: | https://doi.org/10.1590/rbz4820170055 |
URI: | https://locus.ufv.br//handle/123456789/30874 |
Data do documento: | 26-Jul-2019 |
Aparece nas coleções: | Artigos |
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Arquivo | Descrição | Tamanho | Formato | |
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1806-9290-rbz-48-e20170055.pdf | artigo | 276,37 kB | Adobe PDF | Visualizar/Abrir |
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