The impact of different levels of inulin as prebiotic in diet on the growth performance and body composition of roach Fry (Rutilus rutilus caspicus)

The current study aimed to evaluate the effect of inulin as a prebiotic on growth, feeding, survival, rate and body composition of the roach (Rutilus rutilus caspicus). This research was conducted in a completely randomized design (CRD) including 0, 0/5 and 1 percent of the prebiotic in diet with three replications. To that end, each tank received 100 fries (average weight: 2/33± 0/33 gr) and feeding was performed for 45 days. The results suggest a positive correlation between inulin treatments and some nutritional indices namely final weight (WG), specific growth rate (SGR) condition factor (CF), protein efficiency ratio (PER) and net production compared to the control (p<0.05), though no significant difference was observed between survivals of different treatments. Overall, the results showed that inulin prebiotic could demonstrate high effect on growth performance as a part of fish meal in fish farms.