تأثير سطوح مختلف پروبيوتيك و آهن بر برخي فاكتورهاي خوني آلوين قزل آلاي رنگين كمان (oncorhynchus mykiss, walbaum,1792)

The effect of various levels of probiotic and iron on some blood parameters in rainbow {Oncorhynchus mykiss) alevin

In this experimental, in order to investigate the effects of probiotic (BioPlus 2B) and iron (Fe(So4)2(7H20)) supplementation, a 60 day feeding experiment was conducted. 2700 alveins (average weight 0.135±0.01 gr) were selected and aqual share accidentally through the 27 throughs as 9 treatments with 3 replications. The application of probiotic and iron suplements were considered as: The First treatment was contained fish alevins that they fed by 1.6><109 CFU1/g, The second treatment was contained by 1.2x109 CFU/g, The third treatment was contained by 7mg iron per kg of feed, The fourth treatment was contained 5mg iron per kg of feed, The fifth treatment was contained by 1.6x109 CFU/g and 7mg iron per kg of feed, The Sexth treatment was contained 1.6xl09 CFU/g with 5mg iron per kg of feed, The seventh treatment was contained 1.2xlO9 CFU/g with 7mg iron per kg of feed, The eighth treatment was contained 1.2xlO9 CFU/g with 5mg iron per kg of feed and the ninth treatment as control treatment (without supplementation with probiotic and iron). At the end of experiment, 5 and 7 treatments were recorded maximum number of Red Blood Cells (RBC) (xlO3 mm"3) (1.34±0.02 and 1.33±0.01, respectively), Haemoglobin concentration (Hb) (g dL1) (14.97±0.07 and 14.83±0.08, respectively) and Haematocrite value (Hct) (%) (36.63±0.24 and 35.86±0.14, respectively) (P<0.05). Our findings support that administration of both probiotic and iron to feed, influenced the improvement of RBC, Hb and Hct values, and treatment contained 1.2x 109 CFU probiotic/gr and 7mg iron per kg of feed, showed the best result.