Evaluation of biofloc from saltwater bacteria community for white-leg shrimp culture in Thua Thien Hue
Vol. 130 No. 1A (2021), Original Article
Vol. 130 No. 1A (2021)

Evaluation of biofloc from saltwater bacteria community for white-leg shrimp culture in Thua Thien Hue

Original Article
https://doi.org/10.26459/hueunijns.v130i1A.5914
Published 2021-03-10
Le Cong Tuan
University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Te Minh Son
Department of Environmental Science, University of Sciences, Hue University, 77 Nguyen Hue St., Hue Vietnam
Doan Thi My Lanh
Department of Environmental Science, University of Sciences, Hue University, 77 Nguyen Hue St., Hue Vietnam
Nguyen Hoang Loc
Department of Biology, University of Sciences, Hue University, 77 Nguyen Hue St., Hue Vietnam
Nguyen Duc Huy
Institute of Biotechnology, Hue University, Rd. 10, Phu Vang, Thua Thien Hue, Vietnam
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Keywords

shrimp nursery
saltwater bacteria
white-leg shrimp Biofloc
tôm thẻ chân trắng
chất lượng nước nuôi tôm
chuyển hóa ni tơ.

How to Cite

1.
Tuấn LC, Sơn TM, Lành Đoàn TM, Lộc NH, Huy N Đức. Evaluation of biofloc from saltwater bacteria community for white-leg shrimp culture in Thua Thien Hue. hueuni-jns [Internet]. 2021Mar.10 [cited 2024Dec.26];130(1A):117-23. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/5914
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Abstract

This study was conducted to investigate the formation of biofloc in maintaining the stability of the water quality in the white-leg shrimp nursery system. A treatment unit using microorganisms from natural water was conducted to compare with a control supplemented with commercial probiotics. Shrimp were cultured under the conditions of limited sunlight for 24 days without water exchange and with daily molasses addition as a carbon source (the C/N ratio is 15:1). The resulting biofloc complex could control the increase of NH4+ and NO2– via heterotrophic assimilation and nitrification. During the experiments, the N–NH4 and N–NO2 concentrations of the biofloc system maintain a safe range for the juveniles at 0.99 ± 0,02 and 0.49 ± 0.08 mg·L–1, respectively. At the culture density of 400 shrimp/m3, the shrimp weight increases from 0.01 g to 0.59 g per shrimp on the 24th day of culture for all culture tanks with a survival rate of 82.5%.

https://doi.org/10.26459/hueunijns.v130i1A.5914
PDF (Vietnamese)

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