Performance evaluation of tilapia fingerlings (Oreochromis Niloticus) raised in land-based tanks during the fattening stage

The world population is increasing, and in order to meet the demand for food, viable alternatives have been found in aquaculture as a vital source of high quality protein, nutrients and essential vitamins. This research aimed to evaluate the performance of tilapia (Oreochromis niloticus) in land-based tanks during the fattening phase. Around 8500 fry were allocated in two rearing net enclosures each with 4250 fry, with an initial average weight of 0.2g and fed with commercial feed. In the frying stage, fisheswere fed 6 times a day with a 1mm diet containing 43% crude protein, in the juvenile phase, food based on a 2mm diet containing 34% crude protein was provided 3 times a day and in the fattening phase, 4mm ration containing 28% crude protein was fed 3 times a day. Regarding water quality, the temperature presented an average value of 22.6 ºC, 6.87 mg.L-1 of dissolved oxygen and average water transparency of 27.98 cm. At the end of cultivation, 94.11% survival, 1.12% food conversion, 264g of final average weight and 2110.4kg of net biomass were obtained. We concluded that Oreochromis niloticus fry have satisfactory productivity in land-based tanks.