Steve Elliot of Alltech interviews Dr. Stephen Duren, on the stress that high-performance equine athletes undergo during long-distance transport required for international competition. Such dramatic disturbance to a horse's routine and environment can cause serious equine digestive problems like colic.

Dr. Duren earned his M.S. and Ph.D. in equine nutrition and exercise physiology from the University of Kentucky. He owns and operates Performance Horse Nutrition, an international equine nutrition consulting company that works with horse owners, breeding farms, feed manufacturers and veterinarians to provide the most up-to-date equine nutrition expertise.

Dr. Duren was named Alltech's official nutritionist in June of 2010. Previously he worked with Alltech and animal feed manufacturer O.H. Kruse to formulate Green Feed, the first environmentally friendly equine feed in North America.