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Abstract
The present study, the effects of dietary sesame oil (SO) on growth performance and fillet composition of rainbow trout (Oncorhynchus mykiss) were investigated. Twenty-five fish were randomly allocated in three groups by three replication, in mean initial weight 53.3 g in each tank. Experimental diets consisted of fish oil (FO), sesame oil (SO) and 1:1 blends of two oils, fish oil and sesame oil (FOSO). Dietary sesame oil had no significant effect on growth rate or feed conversion ratio. Similarly, no significant differences were observed between dietary treatments for ash content in fillet of fish. The fillet lipid content was lower in fish fed by sesame oil, but the moisture and the protein were higher. Furthermore, Thiobarbituric acid (TBA) test was changed in different groups and it was lower in SO. The organoleptic indices were affected by dietary oils and FO group had more fishy flavour.
