He teaches multiple courses and works extensively with the Dairy Fellows Program, advises approximately 50 students and is the advisor for the Cornell Dairy Science Club. The focus of his research program for the last 15 years has been to further the understanding of nutrient requirements of dairy calves and heifers and aspects of endocrine control of developmental functions such as mammary development and puberty. He currently leads the development of the Cornell Net Carbohydrate and Protein System.