He holds research, extension and teaching appointments and serves a technical consultant for numerous companies and organizations in the dairy genetics industry. His research focuses on genetic selection and genome-guided management programs to improve the productivity, health, fertility, and feed efficiency of dairy cattle using tools such as whole genome selection, advanced reproductive technologies, crossbreeding, electronic data capture systems, and artificial intelligence algorithms. Dr. Weigel has published approximately 200 peer-reviewed journal articles on various aspects of genetic improvement and management of dairy cattle and has given lectures to academic, industry, and producer audiences in more than thirty countries.