Author(s): Masse Diago, Jean Fall, Abdoulaye Loum, Saloum Jatta, Mariama Sagne, Diegane Ndong, Malick Diouf and Shyn Shin Sheen

Abstract: This study investigated the effects of replacement of corn flour with different forms of Boscia senegalensis leaf meal on the growth performance of Oreochromis niloticus. Five isonitrogenous (40% CP) and isolipidic (7% CL) were formulated to contain 7% corn flour meal and replace 18% corn flour meal with different forms of vaporized (M1), raw (M2), toasted (M3) and fermented (M4) Boscia senegalensis leaf meal. The control diet (M5) contained 25% corn flour meal without Boscia senegalensis leaf meal. Each aquarium (50L) stocked fifteen 0.4 g tilapia fry qas assigned randomly to one of the three replicates of five treatment diets. Fishes were fed three times a day (08:00 A.M, 13:00 P.M and 17:00 P.M) for 12 weeks. The feeding rate was 10 % of the biomass during the first two weeks, then reduced to 8 % for the second two weeks, further reduced to 6 % for the third two weeks and finally reduced to 4 % for the last two weeks. The weight gain percentage of fish fed with diet containg toasted leaf meal is significantly higher than that of fish fed control diet. However, the weight gain percentage of fish fed with different types of leaf meal showed no significant difference.

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