Author(s): Amakoé Adjanke, Kokou Tona and Messanvi Gbeassor

Abstract: A test was conducted to determine the effect of feeding frequency on feed intake, growth and survival of tilapia Oreochromis niloticus, reared in hapas implanted in pond. Twelve hapas of 1m³ were installed in a 150 m² pond in three lines representing the three repetitions of the four treatments which are the feeding frequencies. Oreochromis niloticus tilapia fingerlings with an average initial weight 4.12 ± 0.33 g, were stocked at a density of 50 fish per hapa. They are fed with a standard food (Raanan, 32% crud protein) at different frequencies (F): 1; 2; 3 or 4 meals per day and at the rates of 8 to 3% of the biomass from the first to the sixth month of the trial. After 6 months of experiment the survival rate varied from 92 ± 0.0% (F4) to 78.7 ± 13.3% (F1). Growth was effective in all lots with final mean weights varying from 181.6 ± 3.3 g (F4) to 124.3 ± 1.8 g (F1). It took 2.6 ± 0.1 (F1) to 2.1 ± 0.0 (F3) kilogram of feed to produce 1 kg of fish; the latter (F1; F3) having respectively gained daily 0.71 to 1.05 g per day. Economic analyzes by comparing the products obtained with the charges involved show a profit margin of -4,992.2 F CFA (F1); 490.0 F CFA (F2); 3,718.0 F CFA (F3); -268.9 F CFA (F4). Three feedings per day (F3) appear to be the best frequency for this feeding, however two feedings can allow the farmer to go about other activities.

DOI: 10.22271/fish.2021.v9.i3e.2509

Pages: 350-353  |  727 Views  224 Downloads

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