effects of probiotic (pediococcus acidilactici) on growth and survival of kutum (rutilus kutum) fingerlings

In the present study effects of different levels of probiotic pediococcus acidilactici, on growth performance and survival rate of rutilus kutum fingerlings were investigated. kutum fingerlings with a mean weight of 1±0.235 g were reared for 8 weeks in 500-l fiberglass tanks (15 fish per tank) with 4 diet treatments (3 replicates for each). treatments included 1×10^9, 2:1×10^9, 3×10^9 cfu kg^-1 dry food and a control without probiotic. at the end of the study, specific growth rate (sgr) and survival rate (sr) were significantly higher in treatments supplemented with probiotic compared to the control (p<0.05), while the fish fed with probiotics showed lowest food conversion ratio (fcr) (p<0.05). the results indicated that the use of 3× 10^9 cfu kg^-1 dry food probiotics improved growth parameters and survival rate in r. kutum fingerlings.