ANBAR JOURNAL OF AGRICULTURAL SCIENCES

Abstract

The study was carried out to evaluate the use of two kinds of probiotics ,prebiotic and synbiotic to reduce the effects of aflatoxinB1(AFB1) contaminated the diet of broiler with 2 mg/kg. A total of 108 one day broiler chicks were randomly distributed into six treatments .the first group(c) were used as control , the second group(AFB1) were fed on diet contaminated by 2mg/kg aflatoxinB1 ,the third group (Iraqi probiotic)were fed contaminated diet and supplemented with 5 gm/kg probiotic ,while the fourth group (forgin probiotic) were fed contaminated diet and supplemented with 5 gm/kg imported probiotic. Birds in fifrth group fed contaminated diet and 5gm/kg prebiotic were added , the sixth group (symbiotic) were fed contaminated diet and 5gm/gk symbiotic. results showed that AFB1 caused a significant(p<0.05)decrease in body weight ,and increased relative weight in some internal organs and the mortality percent by33% when compared to control group. addition of biological treatments significant(p<0.05)improved the body weight with surpassed for synbiotic group by 31.1% in compare to AFB1 only followed by probiotic 30.1%,imported probiotic28.3% and prebiotic26.3%. The weight of some internal organs of birds , which were increased by AFB1 contaminated the feedstuff, such as liver ,kidney , were regained its normal weight ,whereas No significant differences in relative weight of heart between treatments were found .