Isolation and Characterization of Bacteria from the Gut of Blue Gourami (Trichogaster tricopters) and its Role on Growth

Abstract

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., (G4) and 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.

Evaluation of dissimilar intestinal bacteria incorporated feeds on growth of ornamental fish Swordtail Xiphophorus helleri

“…The Feed Conversion Ratio (FCR) of blue gourami was lower in feed IV (4·46 ± 0·53) and higher in feed I (8·41 ± 0·23) (Deepika et al . 2019). Somrudee Silarudee et al .…”

“…and lower feed I (control) (6Á3 AE 0Á05). Deepika et al (2019) reported that the feed consumption of blue gourami was higher in feed IV (5Á4 AE 0Á13) containing 1 ml each of Bacillus sp., Enterobacter sp., Aeromonas sp. and lower in the feed I (control) (3Á1 AE 0Á41).…”

“…Similarly, amylase-and cellulase-producing bacterial communities are reported to be highest in herbivorous animals (Ray et al 2012). In addition to host nutrition, the gastrointestinal microbiota serves a variety of other beneficial functions in the host such as preventing the colonization of infectious agents, energy homeostasis and maintenance of healthy mucosal immunity (Deepika et al 2019). The normal microflora of the intestinal tract of the fish includes Enterobacteria sp., Escherichia sp., Bacillus sp., Aeromonas sp., Lactobacillus sp.…”

“…Conversion Ratio (FCR) of Swordtail was lower in feed II (16Á14 AE 2Á1) and higher in feed IV (32Á16 AE 3Á79). The Feed Conversion Ratio (FCR) of blue gourami was lower in feed IV (4Á46 AE 0Á53) and higher in feed I (8Á41 AE 0Á23)(Deepika et al 2019). SomrudeeSilarudee et al (2019) reported a lower feed conversion ratio (FCR) in Black Eared Catfish (Pangasius larnaudii) fed with Lactobacillus plantarum in the feed than in control.…”

Studi Komunitas Bakteri Hidrolitik Saluran Pencernaan Ikan Nilem (Osteochilus vittatus) yang Dibudidayakan Di Kabupaten Banyumas

“…Peranan bakteri yang menguntungkan dalam saluran pencernaan yang memiliki potensi menghasilkan enzim pencernaan eksogen telah banyak diteliti. Hasil riset Deepika et al, (2019) menyatakan bahwa salah satu jenis bakteri pada saluran pencernaan ikan Gurami adalah Bacillus sp. yang dapat menghasilkan enzim hidrolitik seperti protease, amylase, selulase dam lipase.…”