10.22376/ijpbs.2019.10.1.p1-12 Volume 6 Issue 1 2015 (January - March) The effect of dietary supplementation of commercial probiotics Bifilac® on growth of rohu, lessThan i greaterThan Labeo rohita lessThan /i greaterThan fingerlings were evaluated. Experimental diet (ED) was supplemented with Bifilac® (3g/kg diet). Reference diet (RD) was not supplemented with Bifilac®. The feeding trial was conducted using lessThan i greaterThan L. rohita lessThan /i greaterThan fingerlings (5.30±0.01 g) for 60 days in triplicates. The groups D1 and D2 were fed daily with RD and ED, respectively, while the D3 group was fed alternately with RD and ED at an interval of 7 days. All experimental groups were fed lessThan i greaterThan ad libitum lessThan /i greaterThan twice daily at 8:00 am and 2:00 pm. The growth performance and feed utilization efficiencies were highest for D2. Carcass protein content was found highest for D2. The digestive enzyme activity and the heterotrophic bacterial count of gut were highest for D2 fish group. So, daily dietary supplementation of Bifilac® resulted in improved growth and feed utilization efficiencies of lessThan i greaterThan L. rohita lessThan /i greaterThan fingerlings. SAYANTI SAHA, MOHAMMAD ABUL HASSAN AND ANIL PRAKASH SHARMA Probiotics, Bifilac®, Growth performance, Rohu, Labeo rohita fingerlings 1260-1268