تاثير پروبيوتيك مولتي بهسيل و پري بيوتيك بهسام بر عملكردهاي تغذيه، ميزان انرژي اتلافي و نرخ ترشح آمونياك و اوره در نوزادان ماهي آمور (Ctenophryngodon idella)

Effect of probiotic (Moltibehsil) and prebiotic (Behsam) on feed performances, energy losses and ammonia and urea excretions in grass carp, Ctenophryngodon idella larvae

اين مطالعه براي ارزيابي تاثير پري بيوتيك بهسام و پروبيوتيك تجاري مولتي بهسيل بر ميزان ترشح آمونياك، اوره و اتلاف انرژي در نوزادان ماهي آمور (Ctenophryngodon idella) انجام شد. سه سطح از بهسام و بهسيل (200، 400 و 600 ميلي گرم در كيلوگرم از جيره) در جيره هاي آزمايشي، مكمل سازي و براي تغذيه نوزادان ماهي آمور (وزن اوليه 10/1 ± 625/2 ميلي گرم) استفاده شد. آزمايش در قالب يك طرح كاملا تصادفي انجام شد. در پايان آزمايش، وزن نهايي ماهيان، نسبت كارايي پروتئين و چربي نوزادان ماهيان آمور تغذيه شده با سطوح مختلف بهسام و بهسيل در مقايسه با گروه شاهد تفاوت معني داري با شاهد داشت (0/05

This study was conducted to evaluate the effects of two commercial prebiotic and probiotic called Behsam and Behsil, respectively, in feeding performance, ammonia and urea excretions as well as energy losses in grass carp, Ctenophryngodon idella fry. Three levels of Behsam and Behsil (200, 400 and 600 mg/kg of diet) were supplemented to experimental diets and fed to grass carp fry (initial weight of 625.15 ± 10.12 mg). The present study was conducted in a completely randomized design. At the end of experiment, the fish final weight, food conversion ratio, protein and lipid efficiency ratio of the grass carps fed supplemented diet with different levels of Behsam and Behsil had significantly difference with control group (p<0.05). The results clearly exhibited that the different levels of Behsam and Behsil had positive effects on the ammonia and urea excretions in fish fry and also the energy decreasing rate in experimental treatments in comparison with control group. Minimum of ammonia-N and urea-N excretions were obtained in treatment Behsam 600. The maximum energy losses via excretion of ammonia and urea were obtained in control. However, the minimum energy losses were obtained in fish fry fed with 600 mg/kg Behsam. The total energy losses by nitrogenous wastes such as ammonia, urea and energy losses rate (%) per energy intake were decreased in the various experimental treatments in comparison with control. Maximum energy expenditure was detected in control group, but it decreased in experimental treatments and minimum value was obtained in treatment containing 600 mg/kg Behsam. In this study, it was found that the various Behsam and Behsil levels in rearing grass carp fry exhibit different effects on feeding performance, ammonia and urea excretions as well as energy losses in this fish.