National Hog Farmer/Kevin Schulz John Patience’s work at Iowa State University has benefited the North American swine industry by his close watch on the nutrition and management of the pig. Patience has dedicated 46 years to the swine industry. John Patience, PhD, has officially retired from the department of animal science at Iowa State University where he served as professor of applied swine nutrition. Dr. Patience was hired by Iowa State University as an associate professor in 2008 and moved to role of professor in 2010. His research has focused on swine nutrition, but he also worked with pork producers as an expert in the Iowa Pork Industry Center.