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A simple way of avoiding feed wastage in European seabass, Dicentrarchus labrax, under self-feeding conditions ArchiMer
Coves, Denis; Gasset, Eric; Lemarie, Gilles; Dutto, Gilbert.
Self-feeding systems allow fish to freely express feeding activity. A simple rod at the water surface can act as a trigger and provide fish with a way of obtaining pellets from a feeder. Such a rod presented to experienced European seabass, Dicentrarchus labrax, may lead to feed wastage, probably as a result of unintentional fish contacts with the trigger. Trigger protection screens have been designed to prevent fish contacting the trigger by chance, and the efficacy of such screens was tested. Nocturnal and diurnal feed delivery and feed wasted were compared under conditions where the rod was unprotected or protected by semi-cylindrical or cylindrical screens. Tests were conducted using an unrestricted self-feeding regime (reward: 0.2 g pellet per kg of...
Tipo: Text Palavras-chave: Feeding behaviour; Feed wastage; Self feeding; Fish culture; Comportement alimentaire; Gaspillage d'aliment; Auto alimentation; Élevage de poissons.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/1998/publication-867.pdf
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