Effects of Figs and Rosemary Extracts on Rainbow Trout (Oncorhynchus mykiss) on Growth Performance and Blood Parameters

In this study the effects of dietary fig and rosemary extract supplementation on growth performance, feed utilization, biometric indexes and some blood parameters in rainbow trout (Oncorhynchus mykiss) were investigated. Two experimental diets were supplemented with medicinal herb extracts at 0,5,1,2 g/kg. The fish were fed 60 days of trial diet. The addition of fig extract and rosemary extract did not have a positive effect on development and feed intake. In addition, the addition of fig extract and rosemary extract did not cause a change in the number of red blood cell count, hematocrit, hemoglobin, mean corpuscular volume, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration (P>0.05). However, the addition of fig extract and rosemary extract to the feed increased the spleen somatic index, while decreasing viscerosomatic index and hepatosomatic index (P<0.05).

Anahtar Kelimeler:

Oncorhynchus mykiss, fig extract, rosemary extract, growth performance, feed utilization, blood paramereters

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