عنوان مقاله [English]
نویسنده [English]چکیده [English]
This study investigates the effects of prebiotic oligofructose on some growth factors, survival, body composition and resistance to salinity stress of Caspian Roach (Rutilus rutilus) fry. Fries with average (±SD) weight of O.06±O.03g supplied form Sijowal Center, Golestan Province and were randomly allocated in 12 tanks and after acclimation, triplicate groups were fed with diets supplemented with 0 (control), 1, 2 and 3% prebiotic oligofructose. At the end of the trial growth factors (final weight, weight gain, SGR, CF) as well as survival rate, body composition (crude protein, lipid, ash and moisture) and resistance to salinity stress were measured. Our results showed that roach fries fed with prebiotics supplemented diet had better growth condition include final weight, specific growth rate, condition factor compare to control treatment. Caspian roach fed with 2% oligofructose had significantly higher final weight, SGR, CF compare to control and 1% oligofructose treatments. Weight gain showed no significant difference between prebiotic supplemented treatment. The study of body composition showed no significant difference between treatments groups. Roach fries fed with prebiotic supplemented diet had significantly higher resistance to salinity stress and highest survival observed in 3% oligofructose treatment.