تأثير پربيوتيك ايمكس بر عملكردهاي رشد، كارايي تغذيه و برخي از فاكتورهاي بيوشيميايي سرم خون بچه ماهيان انگشت قد كپور معمولي (Cyprinus carpio Linnaeus. 1758)

Examination of the Effects of the A-Max Prebiotic on Growth Performance, Feed Efficiency and Some Biochemical Factors of Blood Serum in Common Carp (Cyprinus carpio Linnaeus. 1758) Fingerling M.R

زمينه و هدف: با توجه به رشد روزافزون صنعت آبزي‌پروري در جوامع بشري نياز به بهبود مقاومت در برابر بيماري‌ ها، افزايش كارايي تغذيه و ارتقاء پارامترهاي رشد در گونه‌ هاي مختلف ماهيان پرورشي به‌عنوان يك ضرورت شناخته مي‌ شود. استفاده از مكمل‌ هاي غذايي از قبيل پربيوتيك ها معمولاً باعث تقويت سيستم ايمني و بهبود كارايي غذا و وضعيت رشد مي‌گردد. هدف از اين پژوهش تأثير پربيوتيك ايمكس بر عملكردهاي رشد، كارايي تغذي و برخي از فاكتورهاي بيوشيميايي سرم خون بچه ماهيان انگشت قد كپور معمولي است. روش كار: بدين منظور تعداد 600 قطعه بچه ماهي با ميانگين وزني 0/85±5/1 گرم به صورت تصادفي در چهار تيمار آزمايشي حاوي سطوح صفر (شاهد)، 0/4، 0/8 و 1/2 گرم پربيوتيك در هر كيلوگرم جيره غذايي هركدام با سه تكرار با تراكم 3-2 قطعه بچه ماهي در هر ليتر در 12 مخزن مدور از جنس پلي‌ اتيلن تقسيم شدند. سنجش پارامترهاي رشد كارايي تغذيه و شاخص‌ هاي بيوشيميايي سرم خون اندازه گيري گرديد. يافته ها: نتايج به‌ دست‌آمده در پايان دوره آزمايش نشان داد كه بچه ماهيان تغذيه‌ شده با سطح 0/8 گرم پربيوتيك به‌ طور معني‌ داري از عملكردهاي بهتري در پارامترهاي رشد و تغذيه در مقايسه با ساير تيمارهاي آزمايشي و شاهد برخوردار بودند (0/05>p). اختلاف معني‌ داري در ميزان پروتئين تام، AST و فعاليت ويژه اين آنزيم در تيمارهاي تحت بررسي مشاهده نشد (0/05p). نتيجه­ گيري: تيمار پربيوتيك ايمكس اثرات مثبتي بر عملكردهاي رشد، تغذيه و پارامترهاي بيوشيميايي سرم خون بچه ماهيان كپور معمولي داشته و باعث تقويت سيستم ايمني غير اختصاصي آن‌ هامي گردد.

Introduction & Objective: Aquaculture is one of the fastest growing industries in the world. There is a necessity to improve for enhanced disease resistance, feed efficiency and growth performance of cultured fish species. In fact, with increase of these indices and survival rate of the fish, the cost of production is likely and remarkably would be reduced. Meanwhile, it has been made clear that the use of nutritional supplements, such as prebiotics, usually strengthens the immune system, feed efficiency and growth status of the species under study. According to the cause, this experiment was conducted to evaluate the effect of different levels of A-Max on the growth performances, feeding efficiency and biochemical indices in the serum of Cyprinus carpio fingerling following 60 days of trial. Methods and material: For this purpose, 600 fish fingerling with the weight average of 5.1±0.85g (±SD) kept at a density of 2-3 fish per liter in 12 polyethylene circular tanks were randomly divided into four treatments with three replicates. The fish were fed with three concentrations of 0.4, 0.8 and 1.2 g per kg of the ration of probiotics in-feed and the control were fed with a diet without prebiotic supplementation. Results: The results indicated that 0.8 g prebiotic compare to other treatments caused increasing growth parameters (FW, WG, SGR, ADG, TGC, VGW) and feeding efficiency (FCR, FCE, RFI, PER, LER) significantly (p<0.05). Also, at the end of the trial period, blood samples have prepared through a caudal peduncle vein from 60 normal fish (15 pieces of each treatment), looking healthy with the weight average of 25±1.3g. Examination of biochemical characters of blood serum (TP, GLU, Cortisol, AST, ALT, ALP) showed that there are no significant differences between TSP, AST and specific activity of this enzyme among treatments (p>0.05). While, the amount of Glucose, Cortisol, ALT, ALP and specific activity of these enzymes which had a significant difference compared to the control group (p<0.05). Conclusion: Overally, it can be rectified that the diet containing prebiotic of A-Max especially at the level of 0.8 g can have positive effects on growth performances and biochemical parameters of serum and enhance the non-specific immune system in C. carpio fries.