Effet Du Remplacement Partiel De La Farine De Poisson Par La Farine De Lentille Lemna Minor Fermenté Dans L’alimentation Des Juvéniles Du Tilapia Du Nil (Oreochromis Niloticus) En Côte d’Ivoire
Abstract
L'aquaculture, essentielle pour accroître les sources de protéines en Côte d'Ivoire, est limitée par l’alimentation qui représente plus de 50 % des coûts de production. Cette étude visait à remplacer la farine de poisson par la farine fermentée de Lemna minor dans l’alimentation de juvéniles du tilapia Oreochromis niloticus (25,55 ± 0,28 g). Six régimes S0, S15, S30, S50, S75 et S100 sont formulés en remplaçant graduellement la farine de poisson par la farine fermentée de Lemna minor. Après huit semaines d’élevage, les paramètres de croissance et d’utilisation des aliments ont été évalués. Les gains moyens quotidiens variaient entre 0,29 et 0,80 g/j, et les taux de croissance spécifique entre 0,88 et 1,80 %/j. Parmi les régimes substitués, les meilleures croissances sont observées chez les poissons nourris avec S15, suivi de S30. L’indice de consommation (IC) et le coefficient d’efficacité protéique (CEP) ont varié respectivement de 1,15 à 3,39 et de 1,07 à 2,28. Les poissons nourris avec le régime S15 ont présenté les meilleurs (IC 1,19 ; CEP 2,22), suivis de ceux du régime S30 (IC 1,3 ; CEP 2,18). Une substitution de la farine de poisson par la farine fermentée de lentilles allant jusqu’à 30 % serait envisageable.
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DOI: http://dx.doi.org/10.52155/ijpsat.v46.2.6584
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