<b> Evaluation of biofloc formation in the mullet <i> Mugil </i> cf. <i> hospes </i> rearing without water exchange </b>
DOI:
https://doi.org/10.5088/atlântica.v34i1.2711Keywords:
Aquacultura, bioflocos, meio heterotróficoAbstract
One of the problems in aquaculture systems is the deterioration of rearing and effluent water quality. Biofloc technology (BFT) has been used both in fish and shrimp farms with limited water exchange, contributing to improve water quality and serving as complementary food source. To evaluate the formation of bioflocs in the rearing of mullet Mugil cf. hospes (juveniles of 4.55 ± 0.15 g) an experiment was conducted with three treatments: mullet with bioflocs inoculum (T); mullet with bioflocs from Litopenaeus vannamei shrimp culture (TFC) and without animals (SEM). The experiment had a randomized design with three replicates and the results were analyzed by Kruskal-Wallis (α=0.05). All treatments received commercial feed (44% CP). The final concentration of total suspended solids were similar (P>0,05) to all treatments TFC (785.33 ± 269.05 mg L-1), T (310.67 ± 126.0 mg L-1), SEM (298.67 ± 30.28 mg L-1), while of biofloc volume in TFC (76.66 ± 5.77 mL L-1) was higher (P<0.05) than in SEM (3.1 ± 2.48 mL L-1), and T (18.66 ± 5.50 mL L-1) was similar to all treatments. The results revealed that it is possible to maintain bioflocs in the culture of Mugil cf. hospes.Downloads
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da Rocha, A. F., Abreu, P. C., Wasielesky Junior, W., & Tesser, M. B. (2012). <b> Evaluation of biofloc formation in the mullet <i> Mugil </i> cf. <i> hospes </i> rearing without water exchange </b>. Atlântica (Rio Grande), 34(1), 63–74. https://doi.org/10.5088/atlântica.v34i1.2711
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