Détail de la notice
Titre du Document
The effect of stocking density on yield, growth and mortality of African catfish (Clarias gariepinus Burchell 1822) cultured in cages
Auteur(s)
HENGSAWAT K. ; WARD F. J. ; JARURATJAMORN P.
Résumé
Copyright (c) 1997 Elsevier Science B.V. All rights reserved. African catfish (Clarias gariepinus Burchell 1822) were cultured at four different densities based on fish biomass per cubic metre in cages suspended in a dugout pond during the summer of 1991. Catfish fingerlings (mean weight 32 g) were stocked at densities of 1.66, 3.44, 4.65 and 6.40 kg per cage or 50, 100, 150 and 200 fish per cage, respectively. At the end of 8 weeks harvest weights were, respectively, 16.6, 32.7, 51.2 and 63.5 kg per cage. Mean fish weights per cage were highest at the lowest density. The daily instantaneous growth rates were not significantly different, but mean weights decreased with increasing density. Instantaneous mortality rates were low. Harvests and production estimates increased with increasing stocking density. Growth and mortality of African catfish cultured in cages at these stocking densities were not affected by initial density, but total harvest and production were directly related to stocking density. © 1997 Elsevier Science B.V.
Editeur
Elsevier Science
Identifiant
ISSN : 0044-8486 CODEN : AQCLAL
Source
Aquaculture (Amsterdam) A. 1997, vol. 152, n° 1-4, pp. 67-76
Langue
Anglais
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