%0 Journal Article %A N. Mahboobi Soofiani, %A S. K. Allameh Fani, %A Z. Faizi, %A J. Pourreza, %T Effects of Different Levels of Dietary Kilka Fish Oil on Rearing Traits and Body Composition of Rainbow Trout (Oncorhynchus mykiss) %J Journal of Water and Soil Science %V 7 %N 1 %U http://jstnar.iut.ac.ir/article-1-399-en.html %R %D 2003 %K Rainbow trout, Fat, Weight gain, Feed conversion ratio, Flesh chemical compositon, %X The present experiment evaluated the effects of fat (Kilka fish oil) levels (0, 5, 10, 15 and 20%) in the diet (35% constant protein) on performance of rainbow trout. The experiment was performed in a completely randomized design, with 4 replicates, 200 grower fish with an average weight of 200±11 gr, each. They were randomly divided into 20 groups of 10 fish per group reared in separate pens. Fish were acclimated to the experimental conditions for 10 days before treatments began and then the experiment was performed over a period of 8 weeks. Measured criteria were weight gain (WG), specific growth rate (SGR), feed conversion ratio (FCR), condition factor (CF) and flesh chemical composition (fat, protein, ash), and fat stored in liver. Results showed that the diet with 15 percent fat content had significantly (P %> http://jstnar.iut.ac.ir/article-1-399-en.pdf %P 245-253 %& 245 %! %9 Research %L A-10-2-399 %+ %G eng %@ 2476-3594 %[ 2003