Effect of different quantity of fish oil and soybean oil on growth, feeding and body composition of fingerling (Oncorhynchus mykiss)
Subject Areas : New Technologies in Aquaculture Development
Keywords: growth performance, fish oil, Soybean oil, feeding, proximate composition, Keywords: Oncorhynchus mykiss,
Abstract :
Abstract In this study, a 8-weeks feeding trial was conducted to evaluate the effects of diets with different level of fish oil and soy oil on O.mykiss growth performance and body composition analysis. Fingerling O.mykiss with the average initial weight of (10g) were fed with3 different diets which contained 40% fixed amount of protein diets. For all groups fixed amount of %55 fish flour 10% wheat flour 20% soy flour and 5% additives while the amount of fish oil and say oil were different in diets for first group (control group) 10% fish oil second group 10% say oil and for third group 5% fish oil and 5% soy oil were added to their diets and they were investigated. 540 fingerling O.mykiss randomly assigned to 3 groups and each group contained triplicates (60 O.mykiss in each pool). After a 8 week feeding trial result showed that change in the amount of fish oil and soy oil in diets have effects on moisture an fat (P<0.05) and it have no significant effect on ash and crude protein (P>0.05) also the changes in the amount of fish oil and soy oil have effects on the most of growth factors like GR, BWI, but they have no effect on CF, FCR & SGR.
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