ﺗﺄﺛﯿﺮ اﺳﺘﺨﺪام اﻟﻤﻌﺰز الحيوي Probiotics ﻣﺪﻋﻮم ﺑﺎﻟﺴﺎﺑﻖ اﻟﺤﯿﻮي Prebiotics ﻋﻠﻰ دﻻﺋﻞ اﻟﻨمو و بعض ﻟﺼﻔﺎت اﻟﻔﺴﻠﺠﯿﺔ ﻟﺼﻐﺎرِ اﺳﻤﺎك اﻟﻜﺎرب اﻟﺸﺎئع Cyprinus carpio L.

A totalof120 common carp Cyprinus carpioL. with average weight 20.45±1.24 gm/fish were assigned randomly into five groups of three replicates for each group, each replicate included 8 fishes. The fish were fed for 90 days on five diets that equal in isonitroenons 24.16% and isocaloric 1408.88 MJ/kg. Diet for control T1, local probiotic Iraq probiotic added at levels5g/kg for diet T2, local probioticadded at5g/kg from diet+5g/kg prebiotic which include fructo-Oligosacchardes FOS for diet T3, imported probiotic which include Enterococcus faeciumadded at 2g/kg diet for diet T4, imported probiotic which include E. faeciumadded at 2g/kg diet+2g/kg per diet prebiotic which include FOS for diet T5.The results showed there were significant distinction for T5p<0.05in growth parameter and food conversion and sufficiency rate FCR and FER and apparent coefficient digestibility ACD, there were no significant different between T5 andT4. The results of blood biochemical examinationshowed significant distinction for T4from T1 and T2 in packed cell volume (PCV)and Hemoglobin Hb,therewere no significant different betweenall treatment in erythrocyte and leukocyte count RBC and WBc