Generational on the top and bottom side, Leo and Sam McDonnell devote their time and efforts to providing the most predictable and proven genetics available on their operation, McDonnell Angus. Moving toward trait selection of economic value, the family’s success increased as they worked with breeders toward a common goal — industrywide efficiency. Carrying on what his father started in 1962, Leo managed the Midland Bull Test which has since grown to become the largest performance test center in North America, testing about 2,000 bulls annually, but has since been passed on to his son. As Leo and Sam transition their focus to McDonnell Angus, they note that the legacy isn’t the business — the legacy is their children and grandchildren. Their legacy lies in the future of the industry.