DocTalk Dr. Dan Thomson visits with Dr. Bob Larson, a professor and researcher at the Veterinary Teaching Hospital at Kansas State University.  They will be discussing breeding soundness exams in bulls.  With sub-fertility rates averaging from 10 to 20 percent in bulls, it is critical to know before the breeding season starts if your bulls are able to perform.  Learn what takes place in breeding soundness exams, how stress negatively affects the performance of bulls and what age-related issues affect younger and older bulls.