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Enang Harris
Departemen Budidaya Perairan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor
Agriculture, Biological Sciences & Forestry

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Selection of probiotic bacteria from the coral reef and tiger grouper fish (Epinephelus foscoguttatus) farming environment . Ilmiah; . Sukenda; . Widanarni; Enang Harris
Jurnal Akuakultur Indonesia Vol. 11 No. 2 (2012): Jurnal Akuakultur Indonesia
Publisher : Indonesian Society of Scientific Aquaculture (ISSA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1171.137 KB) | DOI: 10.19027/jai.11.109-117

Abstract

The use of probiotic bacteria is one of the methods in aquaculture to control infectious diseases. This study aims to obtain candidates probiotic bacteria from the coral reef and tiger grouper aquaculture environment (Epinephelus fuscoguttatus). Steps of the study included of: 1) isolation of candidates probiotic bacteria, 2) selection of candidates probiotic bacteria: inhibition test and co-culture methods, 3) enzymatic test, 4) the growth of bacteria test 5) pathogenicity test and 6) the molecular identification of probiotic bacteria. The results showed that of 124 isolates in test zone of inhibition, the four isolates with the widest zone of inhibition of isolate K7, K8, K21, and T4, a total of 51 isolates on co-culture methods, the four isolates were able to suppress the growth of pathogenic Vibrio bacteria, isolates K15, K68, K55, and T36. The results of hydrolyzing the highest protease amylase and lipase enzyme, respectively isolates K15 and T36; isolates T41 and K8; isolates K55 and K68. Candidates probiotic bacteria reached the exponential phase at 16‒18 h. The results of pathogenicity test isolate K7, K8, T36, and T41 provided the highest survival that can be used as candidates probiotics in the tiger grouper. Keywords: selection, probiotics, tiger grouper
The use of sand as a substrate for culture of polychaeta worm Dendronereis pinnaticirris Ahmad Ghufron Mustofa; Enang Harris; Eddy Supriyono; Dedi Jusadi
Jurnal Akuakultur Indonesia Vol. 11 No. 2 (2012): Jurnal Akuakultur Indonesia
Publisher : Indonesian Society of Scientific Aquaculture (ISSA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (837.953 KB) | DOI: 10.19027/jai.11.118-123

Abstract

This experiment was conducted to study the activity, protein retention, daily growth rate, and production of Dendronereis pinnaticirris cultured in different soil substrates. Forty tested worms with average body weight of 150 mg were adapted in laboratory for 30 days. Thereafter, worms were cultured for 30 days in the 13.6 L aquaria and equipped with aeration system. A triplicate experiment was conducted using 10 cm depth of sterilized soil substrate with particle diameter of either 63‒250 μm, 250‒500 μm, or without substrate. The results showed that (1) D. pinnaticirris always swims actively when cultured in the medium without substrate, thereby resulting into the mass mortality (96.7%); (2) the substrate with particle diameter of 63‒250 μm generated significantly higher daily growth rate, survival rate, and production of D. pinnaticirris, but protein retention and feed efficiency were insignificance with those cultured in the substrate of 250–500 μm.Keywords: substrate, protein retention, production, Dendronereis pinnaticirris
Co-Authors Ahmad Ghufron Mustofa DEDI JUSADI Eddy Supriyono Ilmiah Ilmiah Sukenda Sukenda Widanarni Widanarni