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Cette etude a ete realisee pour evaluer les performances zootechniques d’un regime alimentaire a base de residus de semoule de manioc supplementes par la spiruline chez les poulets de chair. Trois (03) groupes de poussins de souche Arbor Acres soumis aux rations temoins supplementees ou non par la spiruline ont ete compares a neuf (09) autres groupes soumis aux rations dans lesquelles le mais a ete substitue par les residus de semoule de manioc aux taux de 50, 75, et 100% et supplementes par 0,5 ou 1% de spiruline. Les principaux resultats ont montre que tous les parametres de croissance se deteriorent avec le taux croissant d’incorporation de residus de semoule de manioc supplementes ou non par la spiruline. L’indice de consommation a augmente de l’ordre de 10; 10 et 15% respectivement avec 50, 75 et 100% de substitution du mais dans la ration. Le rendement carcasse, le poids relatif de la tete, des pattes, du foie, du coeur, du pancreas et de la graisse abdominale evolue en dents de scie d’un traitement a l’autre. Les residus de semoule de manioc peuvent avantageusement etre supplementes par la spiruline au taux de 0,5% dans l’aliment des poulets de chair. © 2015 International Formulae Group. All rights reserved. Mots cles: Mais, manioc, poulets de chair, spiruline English Title:  Zootechnical performances of broiler chickens fed on Spirulina platensis -supplemented cassava root waste based diet English Abstract This study investigated the growth performances of broiler chickens fed on spirulina-supplemented cassava root waste based diet. Three (03) groups of Abor Acres chicks fed on control diets supplemented or not with spirulina were compared to nine (09) other groups fed on diets in which 50, 75 and 100% of maize were replaced by cassava root waste supplemented or not with 0.5 and 1% spirulina in a completely randomized design. Results revealed that growth parameters including feed intake, weight gain and feed conversion ratio  (FCR) depressed with increasing level of cassava root waste in the diet. FCR was poorer by 10, 10 and 15% respectively with 50, 75 and 100% of maize replaced with cassava root waste. Nevertheless, supplementing with spirulina, irrespective to the level of cassava root waste inclusion, demonstrated a production advantage. Carcass yield and relative weight of organs varied from one experimental diet to another. In conclusion, cassava root waste can be beneficially supplemented with spirulina at 0.5% in broiler diets. © 2015 International Formulae Group. All rights reserved. Keywords: Broiler chickens, cassava, maize, spirulina

international journal of biological and chemical sciences

Performances zootechniques du poulet de chair soumis à un régime à base de résidus de semoule de manioc supplémenté par la spiruline (&lt;i&gt;Spirulina platensis&lt;/i&gt;)