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Provedor de dados:  ArchiMer
País:  France
Título:  Effects of rearing density on sea bass (Dicentrarchus labrax) biological performance, blood parameters and disease resistance in a flow through system
Autores:  Roque D'Orbcastel, Emmanuelle
Lemarie, Gilles
Breuil, Gilles
Petochi, Tommaso
Marino, Giovanna
Triplet, Sebastien
Dutto, Gilbert
Fivelstad, Sveinung
Coeurdacier, Jean-luc
Blancheton, Jean-paul
Data:  2010-01
Ano:  2010
Palavras-chave:  Rearing density
Flow through system
Water quality
Sea bass
Resumo:  During 84 days, the effects of density on juvenile sea bass (Dicentrarchus labrax) (76 +/- 16 g) were studied in an experimental tank-based flow through system. Performance, stress response and resistance to virus infection were analysed under five stabilized rearing densities: 10, 20, 40, 70 and 100 kg m(-3). Water quality parameters (CO2, total ammonia nitrogen and O-2) were measured and maintained close to the recommended values for farmed sea bass by adjusting water renewal exchange. No significant differences were observed between density treatments, neither on stress response (cortisol) nor susceptibility to nodavirus. With regards to biological performances, the daily feed intake and specific growth rate were significantly lower in fish reared at the 100 kg m(-3) density. Results on the effects of density in sea bass reared in flow through (present study) and in recirculating aquaculture systems (RAS) (Sammouth et al. 2009) were compared as a contribution to the identification of density not affecting health and welfare in farmed sea bass.
Tipo:  Text
Idioma:  Inglês

Editor:  EDP Sciences
Formato:  application/pdf
Fonte:  Aquatic Living Resources (0990-7440) (EDP Sciences), 2010-01 , Vol. 23 , N. 1 , P. 109-117
Direitos:  2010 EDP Sciences, IFREMER, IRD

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