The effect of probiotic Saccharomyces cerevisiae PTCC5052 on enhancing of survival of Rainbow trout (Oncorhynchus mykiss) larvae

The present study that was done in winter 2008 in shahid Mottahary Aquaculture Center, the effect of Saccharomyces cerevisiae PTCC5052 was investigated as a probiotic increasing of survival and enhancing the growth of Rainbow trout larvae. ????, 8400 yolk sac larvae were devided in to 4 tratments in 3 replicates. The ratio of yeast in 3 treatments were 106, 107, 108 yeast per geram food of fishes for A,B,C treatments, respectively. Mean survival for treatments were 87.8% in control group , 92.8% in treatment A, 93% in treatmen B and 95.4% in treatment C. After analysis of data, in comparison to control group, significance difference was observed only in treatment C (P<0.05).