Abstract
This research aimed to evaluate Nile tilapia (Oreochromis niloticus) cultivation in the agroindustrial (slaughterhouse) effluent treated in a water hyacinth system. The water hyacinth system was built with four gutters of 3 m of length by 0.40 m of width and 0.20 m of depth. The Nile tilapia cultivation was accomplished in water hyacinth system effluent, operated at a tem days hydraulic detention time, in 30 L experimental aquariums (5 fishes per aquarium), considering development and survival. The experiment was carried out in a completely randomized statistical design, with six treatments and four replications. The fishes were fed three times a day. The treated effluent showed to be an alternative culture means for the Nile tilapia cultivation due to the removal of ammoniacal-N, since this is the main problem of fish cultivation in agroindustrial effluent. The culture using treated effluent provided similar yield compared to conventional Nile tilapia cultivation.
Key words:
water reuse; nutrient removal; Oreochromis niloticus
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Pontos de coleta: (1) reservatório; (2) final da primeira calha; (3) final da segunda calha; (4) final da terceira calha; (5) final da quarta calha
