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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2017, Vol. 5, Issue 5, Part D

Bacillus Probiotic Strains of Ecotoxnil® as Eco-friendly and Efficient Bio-decomposing Agent in Curbing Sludge and Toxic Gases from Litopenaeus vannamei (Boone, 1931) Shrimp Culture Ponds


Author(s): Edward Gnana Jothi George, Godfred Ponraj Jeyaraj and Deivasigamani Balaraman

Abstract: The study was conducted to check the efficacy of probiotic, Ecotoxnil in maintaining the water quality and as a bio-decomposer reducing the sludge and toxic gases like ammonia and nitrite in the Litopenaeus vannamei shrimp aquaculture pond. Shrimp pond affected with sludge formation and toxic gases like ammonia and nitrite which reported mortality was selected. Agricultural lime was applied at the rate of 50kg/h for 3 days for buffering the water and increasing the pH followed by feed holiday for one day prior to the application of the probiotics. Water quality parameters including pH, temperature, salinity, total alkalinity, and concentration of toxic gases like ammonia, nitrite and relationship between sludge depth with ammonia and nitrite were recorded. Values of pH, temperature, salinity, and total alkalinity ranged from 7.713±0.3 to 8.224±0.3, 28.467±0.7˚C to 29.902±0.6˚C, 14.012±2.1 psu to 15.413±2.1 psu, and 146.367±1.6 to 219.008±1.6 ppm respectively. Values of toxic gases like ammonia and nitrite ranged from 0.642±0.01ppm, which upon application of Ecotoxnil was observed to come down to 0.002±0.0 ppm and 0.349±0.01 ppm which upon application of Ecotoxnil has reached the lowest concentration of 0.001±0.0 ppm respectively. The depth of sludge in the pond was decreased to 3.212±1.1cm from 10.821±1.1cm post application of Ecotoxnil. Simple linear regression pattern constructed between sludge depth as independent variable and concentration of ammonia as dependent variable expressed an R2 value of 0.9011 with p<0.05 and simple linear regression pattern constructed between sludge depth as independent variable and concentration of nitrite as dependent variable expressed an R2 value of 0.9108 with p<0.05. From the data obtained, it was evident that the application of Ecotoxnil has significant impact on the reduction of toxic gases like ammonia, nitrite and minimising bottom sludge in the pond.


Pages: 283-291  |  577 Views  31 Downloads

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How to cite this article:
Edward Gnana Jothi George, Godfred Ponraj Jeyaraj and Deivasigamani Balaraman. Bacillus Probiotic Strains of Ecotoxnil® as Eco-friendly and Efficient Bio-decomposing Agent in Curbing Sludge and Toxic Gases from Litopenaeus vannamei (Boone, 1931) Shrimp Culture Ponds. International Journal of Fisheries and Aquatic Studies. 2017; 5(5): 283-291.
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