Applying biofloc technology in the culture of juvenile of Piaractus brachypomus (Cuvier, 1818): Effects on zootechnical performance and water quality

Applying biofloc technology in the culture of juvenile of Piaractus brachypomus (Cuvier, 1818): Effects on zootechnical performance and water quality

The aim of this study was to assess the zootechnical performance and water quality of a cachama blanca (Piaractus brachypomus) culture using biofloc technology (BFT) versus a system with daily water exchange (DWE). To do this, 180 juveniles (mean initial weight: 5.40 ± 0.19 g) were distributed in 12...

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Bibliographic Details
Published in:Aquaculture research Vol. 51; no. 9; pp. 3865 - 3878
Main Authors: Sandoval‐Vargas, Leydy Y., Jiménez‐Amaya, Martha N., Rodríguez‐Pulido, José, Guaje‐Ramírez, Diana N., Ramírez‐Merlano, Juan A., Medina‐Robles, Víctor M.
Format: Journal Article
Language:English
Published: Oxford Hindawi Limited 01-09-2020
Subjects:
aquaculture
biofloc
Biofloc technology
cachama blanca
Captivity
Ciliates
Cultivation
Fish
intensive systems
Juveniles
Marine fishes
microorganism characterization
Microorganisms
Minors
Nitrogen compounds
Nitrogen dioxide
Piaractus brachypomus
Stocking
Stocking density
Tanks
Technology
Tropical climate
Tropical fish
Tropical fishes
Water exchange
Water quality
Water quality assessments
Water resources
Water scarcity
Weight
Weight gain
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Summary:The aim of this study was to assess the zootechnical performance and water quality of a cachama blanca (Piaractus brachypomus) culture using biofloc technology (BFT) versus a system with daily water exchange (DWE). To do this, 180 juveniles (mean initial weight: 5.40 ± 0.19 g) were distributed in 12 circular plastic tanks with stocking densities of 20 or 40 individuals m3; then, they were cultured for 91 days. BFT treatments kept a C:N ratio approximately of 15:1. Temperature, pH and oxygen were monitored daily, while the other variables were measured weekly. Most productive variables were significantly influenced by both culture system and stocking density with significantly higher values of daily weight gain, total weight gain and total length for fish kept in DWE 20. However, only minor differences were observed within the BFT system. With the exception of the toxic nitrogen compounds (NH4+ and NO2−), all the other water quality parameters were within the acceptable ranges for the cultivation of tropical fish. Microorganisms started to settle from the first week. A total of 23 genera were present, the most outstanding of which being seven genera of ciliates and three rotifers, rhizopods and chlorophytes. In conclusion, both systems BFT and DWE are useful for increasing the production of P. brachypomus in captivity. Additionally, the BFT system can potentially be applied for growing juveniles of this specie in regions with scarce water resources.
Bibliography:Funding information
Capital Semilla 2017
Faculty of Agricultural Science and Natural Resources at Universidad de los Llanos for the financial support for the translation of the manuscript.
This study is part of the project with code FCARN‐13‐2014 and was funded by the General Directorate of Research at Universidad de los Llanos. Finally, we thank to
ISSN:1355-557X
1365-2109
DOI:10.1111/are.14734