PERFORMANCE DE CROISSANCE DU POISSON-CHAT

PERFORMANCE DE CROISSANCE DU POISSON-CHAT

Emmanuel Essien

50,86 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Botánica y ciencias de las plantas
ISBN:
9786208564292
50,86 €
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Disponible

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Un essai d’alimentation de 70 jours a permis d’évaluer les performances de croissance de cinq aliments commerciaux pour poissons sur des alevins de Clarias gariepinus. Les poissons ont été répartis au hasard dans cinq bassins de traitement avec une réplique et un contrôle, à raison de 20 poissons par bassin. Nourris deux fois par jour à 10 % du poids corporel, Coppens a servi de contrôle (TC), tandis que les traitements comprenaient Aqualis (T1), Ecofloat (T2), Bluecrown (T3) et Vitafeed (T4). Les alevins provenant de Vision Park Farms, Nigeria, avaient un poids moyen de 2.49±0.23g et des longueurs de 7.01±0.30cm (total) et 6.16±0.24cm (standard) au départ. Les bassins étaient uniformes et mesuraient 40x40x50cm. Les performances de croissance et l’utilisation des nutriments étaient les plus élevées chez les Coppens. Les données ont été analysées avec une ANOVA à sens unique et une comparaison de signification à 5%. Le gain de poids différait significativement (P≤0,05) : Coppens (53,10 g), T3 (38,10 g), T4 (37,50 g), T1 (30,40 g) et T2 (30,15 g). Les taux de croissance spécifiques et journaliers ont également varié de manière significative entre les aliments, Coppens étant le plus élevé. La température, le pH et l’OD ont été maintenus en moyenne à 27OC, 6,95 et 7,1 mg l, ce qui correspond aux recommandations pour une bonne croissance des poissons.

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