Does commercial probiotics improve the growth performance and hematological parameters of Nile tilapia, Oreochromis niloticus?

Oreochromis niloticus be-coming a promising aqua-culture species globally, but recent disease outbreaks and poor growth with commer-cial feed making it chal-lenging. A 60 days long aquarium trial series of laboratory assays have been conducted to assess the performance O. fed locally available commercial pro-biotic. fry’s were mixture basal diet probiotics supplementation at level 0% (control), 0.2%, 0.4% 0.8%. After phase weight gain, length specific rate (SGR), percentage gain (PWG), (PLG) not-ed. Among all, highest val-ues above parameters observed T1 (0.2%) treatment group. Weight PLG PWG significantly im-proved in group (p<0.05). Additional-ly, hematological parame-ters including hemoglobin (Hb), white blood cell (WBC) red (RBC) also for all groups was found values these parameters, alt-hough there no statis-tically significant differ-ences between T2. The results this study showed that 0.2% dietary supple-ments would optimize per-formance reared niloticus.