Effect of two different inclusion levels of extruded common bean meal in feeds on growth, feed conversion and body composition of rainbow trout (Oncorhynchus mykiss Walbaum, 1792)

The research was conducted to determine the effect of feeds containing 15% and 20% extruded common bean meal (common bean I and common bean II groups) on growth, feed conversion and body composition in rainbow trout (Oncorhynchus mykiss Walbaum, 1792).Average initial weights of fish were 99.04 ± 0.88 g in control group, 99.53 ± 1.12 g in common bean I group and 99.91 ± 0.93 g in common bean II group. During the experiment, control, common bean I and common bean II groups were fed containing % 45.31 crude protein, % 18.67 crude fat; % 45.33 crude protein, % 17.91 crude fat; and % 45.37 crude protein, % 20.7 crude fat, respectively.At the end of the experiment, average final weights of control, common bean I and common bean II groups were 186.54 ± 13.37g, 175.51 ± 3.44 g and 164.81 ± 8.81 g, respectively (P>0.05). Feed conversion ratios of control, common bean I and common bean II groups were 1.3, 1.5 and 1.4, respectively (P>0.05).In this study we determined that the different inclusion levels (15% and 20%) of extruded common bean meal in feeds did not effect growth, feed conversion and body composition in rainbow trout.