This research service investigates the United States direct fed microbials (DFM) market for animal feed from 2003 to 2006, with forecasts to 2013. It offers a comprehensive insight to the United States DFM market for animal feed, the structure and developments related to it. It also clearly lists and defines the market drivers and restraints that have had an impact in the United States scenario, and the challenges and opportunities in this market for future years.