My program of teaching and research in ruminant nutritional physiology focuses on improving the efficiency of feed utilization and reducing the environmental impact of beef cattle and ruminant production systems. Specifically, I am interested in identifying mechanisms involved in the molecular function and regulation of proteins involved in digestion, absorption, and metabolism of nutrients, specifically as it applies to cellular growth, energy use, and nutrient utilization in the gastrointestinal tract and whole animal. Additional research is focused on applied feeding and supplementation strategies to improve feed efficiency or decrease feed costs in growing calf and mature cow nutrition programs.