ISSN: 0973-7510

E-ISSN: 2581-690X

Research Article | Open Access
G. Deepika, P. Sivakumar and M.R. Rajan
Department of Biology, Gandhigram Rural Institute- Deemed to be University, Gandhigram – 624 302, Tamil Nadu, India.
J. Pure Appl. Microbiol., 2019, 13 (4): 2479-2487 | Article Number: 5927 | © The Author(s). 2019
Received: 30/10/2019 | Accepted: 16/12/2019 | Published: 27/12/2019

Five variant groups were isolated from the gut of Blue gourami Trichogaster tricopterus through serial dilution, identified by using biochemical tests and bacteria were Bacillus sp., (G1) Pseudomonas sp., (G2) Enterobacter sp., (G3) Aeromonas sp., (G4and Escherichia sp., (G5). Based on enzymatic productivity (Amylase, Cellulase, Lipase, and Protease) and antimicrobial activity Bacillus sp., Enterobacter sp., and Aeromonas sp., and mass multiplied using nutrient broth. Four different feeds such as feed I (Control), II (1ml Bacillus sp.,) III (1ml each of Bacillus sp. and Enterobacter sp.) and IV (1ml each of Bacillus sp., Enterobacter sp. and Aeromonas sp.,) were prepared. Feed utilization parameters of blue gourami Trichogaster tricopterus were studied after 21 days of rearing and all feed utilization parameters were higher in feed IV.


Gut bacteria, blue gourami, in vivo trial, growth parameters.

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© The Author(s) 2019. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.