Evaluation of biofloc from saltwater bacteria community for white-leg shrimp culture in Thua Thien Hue
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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 2021Apr.21];130(1A):117-23. Available from: http://jos.hueuni.edu.vn/index.php/HUJOS-NS/article/view/5914

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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