摘要
Purple Non-Sulfur Bacteria (PNSB), also known as phototrophic bacteria are widely distributed in both freshwater and marine environment and capable to <span><span style="font-family:Verdana;">grow in wide range of substrates. In this study, Bacterium </span><i><span style="font-family:Verdana;">Rhodobacter</span></i></span><i><span style="font-family:Verdana;"> sphaeroides</span></i><span style="font-family:Verdana;"> strain UMS2, a freshwater isolate was used in this study in utilization of fish hatchery waste. This study was conducted to determine the nutritional values of bioprocess product that was grown in fish hatchery waste. Finally, the waste bio-converted product was used as feed supplement to monitor the </span><span><span style="font-family:Verdana;">growth performance of live feed </span><i><span style="font-family:Verdana;">Tubifex</span></i><span style="font-family:Verdana;"> spp. Inoculum of </span><i><span style="font-family:Verdana;">Rhodobacter</span></i></span><i><span style="font-family:Verdana;"> sphaeroides</span></i><span style="font-family:Verdana;"> strain UMS2 was developed in 112 synthetic media and 48-h culture of 30% (v/v) inoculum was used in fish hatchery waste during the bioprocess. The nutritional values of bio-converted product, except total ash (%), were not significantly improved with 30% (v/v) inoculum of </span><i><span style="font-family:Verdana;">Rhodobacter sphaeroides</span></i><span style="font-family:Verdana;">, strain UMS2. Feeding trial in bloodworm (</span><i><span style="font-family:Verdana;">Tubifex</span></i><span style="font-family:Verdana;"> spp.) with bioconversion product conducted for 15 days to monitor growth (w/v) of live feed. Initial growth 1.42 ± 0.001 g/L of </span><i><span style="font-family:Verdana;">Tubifex</span></i><span style="font-family:Verdana;"> spp. was stocked in 15 × 75 × 15 cm plastic tray connected with recirculated system. </span><i><span style="font-family:Verdana;">Tubifex</span></i><span style="font-family:Verdana;"> spp. was obser
Purple Non-Sulfur Bacteria (PNSB), also known as phototrophic bacteria are widely distributed in both freshwater and marine environment and capable to <span><span style="font-family:Verdana;">grow in wide range of substrates. In this study, Bacterium </span><i><span style="font-family:Verdana;">Rhodobacter</span></i></span><i><span style="font-family:Verdana;"> sphaeroides</span></i><span style="font-family:Verdana;"> strain UMS2, a freshwater isolate was used in this study in utilization of fish hatchery waste. This study was conducted to determine the nutritional values of bioprocess product that was grown in fish hatchery waste. Finally, the waste bio-converted product was used as feed supplement to monitor the </span><span><span style="font-family:Verdana;">growth performance of live feed </span><i><span style="font-family:Verdana;">Tubifex</span></i><span style="font-family:Verdana;"> spp. Inoculum of </span><i><span style="font-family:Verdana;">Rhodobacter</span></i></span><i><span style="font-family:Verdana;"> sphaeroides</span></i><span style="font-family:Verdana;"> strain UMS2 was developed in 112 synthetic media and 48-h culture of 30% (v/v) inoculum was used in fish hatchery waste during the bioprocess. The nutritional values of bio-converted product, except total ash (%), were not significantly improved with 30% (v/v) inoculum of </span><i><span style="font-family:Verdana;">Rhodobacter sphaeroides</span></i><span style="font-family:Verdana;">, strain UMS2. Feeding trial in bloodworm (</span><i><span style="font-family:Verdana;">Tubifex</span></i><span style="font-family:Verdana;"> spp.) with bioconversion product conducted for 15 days to monitor growth (w/v) of live feed. Initial growth 1.42 ± 0.001 g/L of </span><i><span style="font-family:Verdana;">Tubifex</span></i><span style="font-family:Verdana;"> spp. was stocked in 15 × 75 × 15 cm plastic tray connected with recirculated system. </span><i><span style="font-family:Verdana;">Tubifex</span></i><span style="font-family:Verdana;"> spp. was obser
