Of all animal derived-food, the demand for poultry meat increases the most dynamically. The poultry sector can only satisfy this demand by introducing intensive production where antimicrobial use is inevitable. In intensive animal husbandry, the prevention and control of bacterial infections is an important factor in production. Antimicrobial use is an effective and relatively cheap measure to prevent and control infections and maintain animal health and productivity. The aim of this study was to get insight into the costs and benefits of different scenarios for the reduction of antimicrobial use at broiler farms in Dar es Salaam, Tanzania. The research focused on economic consequences for the average farmer. The economic costs and benefits of different scenarios and levels of antibiotic reduction were estimated by partial budgeting using the Mclnerney (1996) Model. The disease cost of the current situation was US$225 …