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Research Article |

Addition Ammonia Assimilation Bacteria to a Biofloc System for Japanese Eel (Anguilla japonica) Farming, Comparison of Growth Performance and Water Quality

Biofloc technology (BFT) system is a renovated and promising aquaculture system which allows aquaculture animals to be farmed at a high density with little or zero water exchange. The research objective of this study was to investigate and compare the effect of BFT with and without exogenous ammonia assimilation bacteria supplementation on water quality and Japanese eel growth performance. Two biofloc treatments (BFT groups) with and without Bacillus sp. addition (Group A and B, respectively) and one control (Group C, traditional aquaculture) were created. Corn starch and sodium bicarbonate were added regularly to maintain C/N ratio and alkalinity of the biofloc treatments. Eels (30±1.2g) were stocked in each pond of 30m3 for 60 days. The result showed that although all toxic nitrogen compound concentration in BFT groups were maintained at safe levels for eel culture during the experiment, bacteria addition could help the system maintain lower level of ammonia at a beginning period. The higher weight gain and specific growth rate were observed in BFT groups compared to control group. Especially, ammonia assimilation bacteria addition had a positive impact on water quality and eel production as the Group A showed the highest total biomass of 129.09 kg with the lowest FCR (feed conversion ratio) of 1.78. The present study revealed that Japanese eels can be reared effectively by biofloc technology with exogenous bacteria input.

BFT, Japanese Eel Culture, Nitrogen Compound, Water Quality, Bacillus sp

APA Style

Sin, C., Ri, Y., Kim, C., Rim, S., Rim, S., et al. (2024). Addition Ammonia Assimilation Bacteria to a Biofloc System for Japanese Eel (Anguilla japonica) Farming, Comparison of Growth Performance and Water Quality. Advances in Bioscience and Bioengineering, 12(1), 14-18. https://doi.org/10.11648/abb.20241201.12

ACS Style

Sin, C.; Ri, Y.; Kim, C.; Rim, S.; Rim, S., et al. Addition Ammonia Assimilation Bacteria to a Biofloc System for Japanese Eel (Anguilla japonica) Farming, Comparison of Growth Performance and Water Quality. Adv. BioSci. Bioeng. 2024, 12(1), 14-18. doi: 10.11648/abb.20241201.12

AMA Style

Sin C, Ri Y, Kim C, Rim S, Rim S, et al. Addition Ammonia Assimilation Bacteria to a Biofloc System for Japanese Eel (Anguilla japonica) Farming, Comparison of Growth Performance and Water Quality. Adv BioSci Bioeng. 2024;12(1):14-18. doi: 10.11648/abb.20241201.12

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This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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