Deliberation of Indicators of Growth of rainbow trout fry ( Oncorhynchus mykiss ) fed with Prebiotic yeast cell wall ( Saccharomyces cerevisia )

The most expensive component in aquaculture feed is implemented. Find ingredients and affordable alternative to help the high level of aquaculture development. In this study, the yeast cell wall of Saccharomyces cerevisia added prebiotic dietary with different levels of Indicators of growth and survival of rainbow trout fry were used . In the study, 120 rainbow trout fry with the average weight of 3.61± 0.12 gr for 8 weeks containing 100 liters volume fiberglass tub were randomly distributed into 12 tanks and were reared. An experiment to determine the optimum level of prebiotic effect of dietary yeast cell wall in the diet of rainbow trout fry in 1% prebiotic treatments, 1.5% prebiotic, 2% prebiotic prebiotic-free control, in a balanced design with three replications each were studied. The results of this study revealed that the growth parameters such as body weight initial (BWI), feed conversion ratio (FCR), specific growth rate (SGR) and average daily growth (ADG) in treatment 2% prebiotic influenced and show significant differences with the control group and other treatments (P<0.05). Other factors growth such as final weight and length of fish was not difference statistically significant(P>0.05). The difference in survival rates and condition factor (ponderal index) and the various treatments was not significant(P>0.05). Based on these results it can be stated that the yeast cell wall of Saccharomyces cerevisia prebiotic growth of rainbow trout fry is better.