Dr. Luis O. Tedeschi has garnered international recognition for integrating growth and development concepts into applied decision support tools to assist stakeholders in the feedlot business. In the late 1990s, Dr. Tedeschi studied the effects of different feed supplementation regimens on the growth curves of beef cows. He had gained avant-garde knowledge of the composition of growth while studying for his master’s degree, by collaborating in a series of studies to assess energy expenditure of beef cattle using the comparative slaughter technique. This research had a tremendous impact on his ability to comprehend the bioenergetics of growth. In the early 2000s, Dr. Tedeschi’s work in this area led him to mathematically postulate the relationship of an animal’s body gain composition to its efficiency of use of energy deposition in tissues of beef cattle. His work changed the paradigm of determining the efficiency of use of energy derived from dietary components to focus on the composition of the gain.