Effect of different levels of dietary zeolite on the growth performance, survival and body composition in Rainbow trout (Oncorhynchus mykiss) juvenile
Subject Areas : New Technologies in Aquaculture Development
Keywords: growth, Survival, body composition, Keywords: Zeolite, Rainbow trout (Onchorhynchos mykiss),
Abstract :
Abstract In this study effect of dietary zeolite on growth, survival and body composition in rainbow trout juvenile (Oncorhynchus mykiss) was investigated for 56 days. Basal diet was supplemented with 0 (control), 2, 4 and 6 g/kg zeolite in a completely randomized design trial with 3 triplicates. 15 samples of rainbow trout juvenile with initially average weight of 40.47±1.38 g were stocked in 80 liters PVC tanks. There were significant differences in growth and feeding parameters between treatments (P<0.05). As there were significant differences in acquired body weight, total length, body weight increase, percent body weight increase, feed intake, condition factor, feed conversion ratio, specific growth rate, net protein utilization, protein efficiency ratio and biomass (P<0.05). There were no significant differences in survival rate and feed per fish between groups (P>0.05). Results indicated level of 6 g/kg zeolite affected on growth rate and feeding efficiency in rainbow trout juveniles and this kind of material could be an appropriate complement in diet cultured rainbow trout.
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