تأثير پربيوتيك مانان اليگو ساكاريد و بتا 1 و3 گلوكان بر شاخص‌هاي رشد، بازماندگي، تركيب لاشه و فعاليت ليزوزيم سرم خون در بچه ماهي قزل‌آلاي رنگين‌كمان Oncorhynchus mykiss(

Effect of dietary of prebiotic mannan oligosaccharide and β-1,3 glucan on growth performance, survival, body composition and serum lysozyme activity in Rainbow trout (Oncorhynchus mykiss) fingerling

به‌ منظور بررسي تأثير سطوح مختلف پربيوتيك مانان اليگوساكاريد و بتا 1 و 3 گلوكان بر شاخص­­­­­­­­­­هاي رشد، بازماندگي، تركيب لاشه و فعاليت ليزوزيم سرم خون در بچه ماهي قزل‌آلاي رنگين‌كمان، يك طرح كاملاً تصادفي شامل سطوح صفر، 1/5، 3 و 4/5 گرم پربيوتيك به ازاي هر كيلوگرم جيره در قالب چهار تيمار با سه تكرار طراحي شد. 480 بچه ماهي قزل‌آلاي رنگين‌كمان با ميانگين وزني 0/55 ± 14/08 گرم به مدت 55 روز با جيره‌هاي آزمايشي تا حد سيري مورد تغذيه قرار گرفتند. تفاوت معني­داري در پارامترهاي رشد، تغذيه و بازماندگي در بين تيمارها وجود نداشت (0/05

Effect of dietary prebiotic mannan oligosaccharide and &beta-1,3 glucan (TechnoMos®) on growth, survival rate, body composition and serum lysozyme activity in Rainbow trout (Oncorhynchus mykiss) were investigated for 55 days. Basal diet were supplemented with 0 (control), 1.5, 3.0 and 4.5 g/kg TechnoMos in a totally randomized design trial in triplicate groups. 480 Rainbow trout with initially average weight 14.08 ± 0.55 g were stocked in tanks and fed up a day. There were no significant differences in growth, feeding parameters and survival rate between fish fed control and TechnoMos supplementation diets (P>0.05). No significant difference was observed in lipid and ash carcass (P>0.05), but there was a significant difference in protein and moisture carcass between treatment (P<0.05). There was no significant difference in serum lysozyme activity between fish fed TechnoMos supplementation diets (P>0.05). The experiment indicated that the prebiotic mannan oligosaccharide and &beta-1,3 glucan didn’t influence the increase of the growth performance but the level of 1.5 g/kg TechnoMos increased serum lysozyme level and survival rate in Rainbow trout fingerling.