Recirculating system using biological aerated filters on tambaqui fingerling farming

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Abstract

The objective of this work was to evaluate a recirculating aquaculture system using biological aerated filters in tanks for tambaqui (Colossoma macropomum) fingerlings farming, with two initial stocking densities (1.4 and 2.5 kg m-3). The biofilters had similar materials (media) and the same granulometric standards, but inverted orders of the media (classic and inverted). The following were monitored for 90 days: water quality; zootechnical, parasitological, and hematological parameters; and hematimetric indices. Water temperature, oxygen levels, pH, electrical conductivity, and dissolved solids concentration were compatible with tambaqui farming and did not differ between the different biofilters and densities. The ammonia and nitrite value was associated with the stocking densities and not with biofilter. The zootechnical and hematological parameters and the hematimetric indices evaluated were not influenced either by the type of biofilter or by the stocking densities. Ichthyophthirius multifiliis, Anacanthorus spathulatus, Notozothecium janauachensis, and Mymarothecium boegeri were the parasites found. The aerated, classical, and inverted biological filters have similar efficiency in maintaining water quality parameters for tambaqui fingerling farming.

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APA

de Farias Lima, J., Montagner, D., Duarte, S. S., Yoshioka, E. T. O., Dias, M. K. R., & Tavares-Dias, M. (2019). Recirculating system using biological aerated filters on tambaqui fingerling farming. Pesquisa Agropecuaria Brasileira, 54. https://doi.org/10.1590/S1678-3921.PAB2019.V54.00294

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