Neil Jaworski, a Ph. D. candidate in the Stein Monogastric Nutrition Laboratory, presents results of his research into the effects of supplementing complex, high-fiber pig diets with direct-fed microbials selected for their ability to secrete fiber-degrading enzymes. Adapted from a presentation at the 2014 ASAS Midwestern Section meeting, Des Moines, IA, March 17-19.