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Articles by Dabonne Soumaila
Total Records ( 2 ) for Dabonne Soumaila
  Ble Celestin Melecony , Yeo Maurice Gopeyue , Etchian Assoi Olivier , Yao Alla Laurent and Dabonne Soumaila
  Background and Objective: In fish feed, fishmeal is the main source of protein that provides energy for fish growth. However, its availability is limited due to the overexploitation of capture fisheries and its price continues to increase each year. The replacement of fishmeal with less expensive energy-rich feed ingredients is necessary for the sustainable development of aquaculture. The objective of this study was to evaluate the effects of different levels of the digestive juice of the snail Archachatina ventricosa in carbohydrate-rich diets on the growth performance and intestinal glycosidase activities of Nile tilapia (Oreochromis niloticus) Materials and Methods: Five experimental diets (R-0, R-1.5, R-2.5, R-5 and R-I) were formulated based on different levels of snail digestive juice (0, 15, 25 and 50 mg g1). The diet R-I contained 5% inactivated digestive juice. O. niloticus fingerlings with an initial body weight of 22.55±2.29 g reared in glass hatchery tanks were fed with the experimental diets for 56 days. Results: The daily weight gain (DWG), specific growth rate (SGR), feed conversion rate (FCR), protein efficiency ratio (PER), intestinal glycosidase activities and fish body composition were significantly (p<0.05) influenced by the digestive juice. The DWG, SGR, FCR and PER were higher in the fish fed with the diet R-5. The 2.5% digestive juice was shown to have high invertase activity in the intestines of the fish. Conclusion: This study showed that the incorporation of 5% digestive juice from the snail A. ventricosa in experimental diets containing 40% carbohydrates improved growth in juvenile tilapia, O niloticus. The determination of the optimum content of the digestive juice enzyme would better use this ingredient in the formulation of carbohydrate-based fish feeds.
  Bouatene Djakalia , Bohoua Louis Guichard and Dabonne Soumaila
  This research was conducted to study the effect of Moringa oleifera on the growth performance and health status of young post-weaning rabbits. Three feeding supplements different in their composition were used: (Moringa supplement, mixed and the standard supplement). The Moringa supplement was added at 3% in the basic feed. The standard supplement used at 3% was made of 0.12% oxyboldine, 0.25% lysine, 0.1% methionine, 0.6% vitamin premix and 0.6% of dibasic calcium. The mixed supplement was composed of 1.5% Moringa supplement and 1.5% of the standard supplement. The performance of these 3 types of feeding formulation was measured on young post-weaning rabbits. The best results were obtained with Moringa supplement. The highest rabbits weight average was given by the Moringa supplement (820.62 g) followed by the mixed supplement (658.78) g and the standard supplement (632.75 g). The growth rates were 126.19, 69.85 and 68.66 g week-1, respectively for rabbits fed with Moringa, mixed and standard feeding formulations. The moringa supplement rabbit feeding formulation showed the highest apparent fecal digestibility (85%) compared to the mixed and standard feeding formulation that were respectively 80 and 81%. This index showed a high protein digestibility. However, the digestibility of different fiber components such as Acid Detergent Fiber (ADF) and Neutral Detergent Fiber (NDF) were low regardless the feeding formulation used. In terms of mortality, the mixed feeding formulation gave the highest mortality rate (12%) compared to the moringa and the standard fed rabbit groups (4%). No difference was observed in the feed consumption index.
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