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Effect of organic acids on water microflora used for larval rearing of fishes

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Title Effect of organic acids on water microflora used for larval rearing of fishes
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Creator Nadella, R.K.
Patil, P.K.
Siddaiah, G.M.
Abhay Kumar
Prasad, M.M.
 
Subject Not Available
 
Description Not Available
Ban on antibiotics usage due to residue problem and development of resistance forces the aquaculturists to find alternative strategies for controlling bacterial infections. In this context, organic acids can be used as
one of the alternative for controlling bacteria mainly the pathogenic Vibrio spp. The present study reports the assessment of efficacy of different concentration of organic acids viz., 1, 0.2, 0.1, 0.075, 0.05, 0.025 on total aerobic bacterial count and presumptive vibrio count from water samples collected from milk fish larval
rearing tank, at different time intervals. The study was conducted separately for all organic acids at six concentrations. Complete inhibition of bacterial flora was observed up to 0.1 per cent for all organic acids at all different time intervals but for all acids of concentrations The study was conducted separately for all organic acids at six concentrations. Complete inhibition of bacterial flora was observed up to 0.1 per cent for all organic acids at all different time intervals but for all acids of concentrations below 0.1 per cent, TPC and PVC at different time intervals ranged from 3.19 to 5.75 log cfu per millilitre and from 2.22 to 3.58 log cfu per millilitre,
respectively. In contrast, TPC and PVC ranged from 6.37 to 6.90 log cfu per millilitre and 4.35 to 4.74 log cfu per millilitre for the untreated water samples. Organic acid treated water samples showed a significant decline
in both the TPC and PVC for the concentrations 0.075, 0.05 and 0.025 of all acids compared to control. From the study, it was concluded that the effective concentration of organic acids should be lesser than 0.1 per cent for treating the water used for larval rearing of fishes and the organic acid treated water may be used for larval
rearing of fishes at lesser concentrations, since there is decline in pathogenic vibrio count. Further studies are necessitated to evaluate the concentration of organic acids on the survival of the fish larvae.
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Date 2019-11-25T08:42:48Z
2019-11-25T08:42:48Z
2017-11-21
 
Type Other
 
Identifier Nadella, R.K.,Patil, P.K.,Siddaiah, G.M.,Abhay Kumar and Prasad, M.M. (2017) Effect of organic acids on water microflora used for larval rearing of fishes. In: (Thomas, S.N., Rao, B.M., Madhu, V.R., Asha, K.K., Binsi, P.K., Viji, P., Sajesh, V.K. and Jha, P.N., Eds.) Fostering Innovations in Fisheries and Aquaculture: Focus on Sustainability and Safety – Book of Abstracts, 11th Indian Fisheries and Aquaculture Forum, ICAR-Central Institute of Fisheries Technology, Kochi and Asian Fisheries Society, Indian Branch, 21-24 November, 2017, Kochi, India, pp.308
978-81-933623-1-0
http://krishi.icar.gov.in/jspui/handle/123456789/25342
 
Language English
 
Relation Not Available;
 
Publisher ICAR-Central Institute of Fisheries Technology, Kochi and Asian Fisheries Society, Indian Branch