Profitability for the cow calf producers starts with high pregnancy rates and a high percentage of the calves being conceived early in the breeding season. A critical component of reproductive success is having sound, highly fertile bulls. This requires bull(s) that can detect cows in estrus, successfully mount and deliver viable, normal sperm into the reproductive tract of the cow. A proven method to determine the breeding potential of bulls is the Breeding Soundness Evaluation (BSE) system developed by the Society for Theriogenology. The Breeding Soundness Evaluation (BSE) is a relatively quick and economic procedure that can be performed by your veterinarian. It is recommended that all bulls be checked annually, within 60 days of the start of the breeding season. The BSE system is a screening procedure that places bulls into categories of satisfactory, unsatisfactory or deferred. The BSE system is most effective in identifying bulls at the lower end of the fertility spectrum. Eliminating bulls from the breeding herd that the BSE system has determined to be less fertile (classified as unsatisfactory potential breeders) and replacing them with bulls that are classified as satisfactory potential breeders increases the likelihood of high pregnancy rates and high percentage of calves being conceived early in the breeding season.