University of Tabriz Journal of Zoonotic Diseases 2476-535X 2 1 2017 06 01 The effect of Antibiofin® on intestinal bacterial population in broiler chickens 9 13 6213 EN Forough Talazade Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran Marziye Naghavi Graduate from Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz - Iran Mansoor Mayahi Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran Darioosh Gharibi Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran Journal Article 2016 08 23 The recent study was performed to investigate the effects of Antibiofin® (including mostly Thymus vulgaris) in drinking water on intestinal bacterial population in broiler chickens. A total of 120 one day-old broiler chickens were purchased and divided into three equal groups. Each group divided into four subgroup of 10 chicks. Chickens of groups A and B received 0.1% and 0.2% of Antibiofin®, respectively in drinking water from one week before vaccination till two weeks after vaccination. Chickens of group C did not receive Antibiofin®. All groups were subcutaneously vaccinated with AI-ND killed vaccine (subtype H9N2) at neck back site at nine days old. The results of this study showed that the consumption of antibiofin® at 0.1% and 0.2% concentrations reduced colony forming units of Escherichia coli in group A and B compared to control group, though it was not statistically significant. The colony forming units of Escherichia coli in digesta of ileo-cecum in group A and B on Mac Conkey agar, nutrient agar and Eosin methylene blue agar showed a lower number compared to control group. However, there was no significant difference between all groups in E. coli counts.

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