Journal of Fisheries and Aquatic Science1816-49271996-0751Academic Journals Inc.10.3923/jfas.2012.475.480Lates calcarifer Juveniles]]>ShapawiRossita TingTan Ee Al-AzadSujjat 6201276Phototrophic bacterium, Rhodovulum sp. (purple non-sulfur bacteria, PNSB) was isolated from the seabass broodstock tank at the Hatchery of Universiti Malaysia Sabah and mass-cultured in synthetic media 112 under anaerobic light condition. The dry cell of bacterial biomass was included in the commercial formulated seabass feed by mixing the fresh biomass with the ground pellet, re-pelleted and air-dried. The Rhodovulum sp. biomass was added at 0.3, 0.6 and 0.9% in the diets. The control diet was prepared without addition of bacterial biomass. Experimental diets were fed to triplicate groups of seabass juveniles twice a day at apparent satiation level over a 12-week feeding trial. Even though there were no significant differences detected in the growth performance, feed conversion ratio and survival rate of fish fed the experimental diets, there were trends of increased growth, improved survival rate and better feed conversion ratio when fish fed with 0.3% bacterial biomass. At the end of feeding trial, weight gain and specific growth rate of fish in this group were 419 and 1.87 %/d, respectively, compared to 373 and 1.82 %/d, respectively, in the control group. The best Feed Conversion Ratio (FCR; 1.95) and survival rate (86.7%) were also obtained in fish fed 0.3% bacterial biomass. Apparently, increasing level of bacterial biomass above 0.3% did not give any significant benefit to growth, feed conversion ratio and survival of seabass juveniles. This study suggested the potential of PNSB Rhodovulum sp. at lower inclusion level to promote growth, FCR and survival of Asian seabass juveniles.]]>Abdelhamid, A.M., A.I. Mehrim, M.I. El-Barbary, S.M. Ibrahim and A.I. Abd El-Wahab,20092133145AOAC,199015th Edn.,Azad, S.A., V.C. Chong and S. Vikineswary,2002Penaeus monodon larvae.]]>33158168Bagheri, T., S.A. Hedayati, V. Yavari, M. Alizade and A. Farzanfar,2008Onchorhynchus mykiss) fry given diet supplemented with probiotic during the two months of first feeding.]]>84348Chantharasophon, K., T. Warong, P. Mapatsa and V. Leelavatcharamas,2011Bacillus species from gastro-intestinal tract of Nile Tilapia (Oreochromis niloticus).]]>10498505Deeseenthum, S., V. Leelavatcharamas and J.D. Brooks,2007Bacillus sp. as probiotic bacteria on growth of giant freshwater prawn (Macrobrachium rosenbergii de Man).]]>1014811485El-Dakar, A.Y., S.M. Shalaby and I.P. Saoud,2007Siganus rivulatus survival and growth.]]>13407412El-Haroun, E.R., A.M.A.S. Goda and M.A.K. Chowdhury,2006® supplementation as a growth promoter on growth performance and feed utilization of Nile tilapia Oreochromis niloticus (L.).]]>3714731480Fernandez, R., M. Sridhar and N. Sridhar,2011Penaeus indicus (H. Milne Edwards) Juveniles.]]>6466479Kim, M.K., K.M. Choi, C.R. Yin, K.Y. Lee, W.T. Im, J.H. Lim and S.T. Lee,2004Rhodopseudomonas palustris, isolated from eutrophicated ponds.]]>26819822Kobayashi, M. and M. Kobayashi,19951995pp: 1269-1282pp: 1269-1282Merrifield, D.L., A. Dimitroglou, G. Bradley, R.T.M. Baker and S.J. Davies,2010Oncorhynchus mykiss Walbaum) I. Effects on growth performance, feed utilization, intestinal microbiota and related health criteria.]]>16504510Merrifield, D.L., G. Bradley, R.T.M. Baker and S.J. Davies,2010Oncorhynchus mykiss Walbaum) II. Effects on growth performance, feed utilization, intestinal microbiota and related health criteria postantibiotic treatment.]]>16496503Rengpipat, S., T. Rueangruklikhit and S. Piyatiratitivorakul,2008Lates calcarifer.]]>39134143Ronald, M.A.,19964th Edn.,Shapawi, R., M.A.M. Zain and S. Senoo,2011Lates calcarifer, Centropomidae) juveniles.]]>24218223Subasinghe, R.P., D. Curry, S.E. McGladdery and D. Bartley,20032003pp: 59-74pp: 59-74Tadesse, I., S.A. Isoaho, F.B. Green and J.A. Puhakka,200348307314Soundarapandian, P. and S. Sankar,2008Penaeus monodon (Fabricius).]]>43541