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J. Dairy Sci. 87:E1-E5
© American Dairy Science Association, 2004.

In Appreciation of Dr. Larry D. Satter—How a Career-Long Effort in Nutrition Research Will Serve Livestock Production in the Future*

M. A. Wattiaux

Department of Dairy Science, University of Wisconsin, Madison 53706

Corresponding author: M. A. Wattiaux; e-mail: wattiaux{at}wisc.edu.

Dr. Satter’s main research accomplishments rest in the central role that he played in developing the current understanding of nitrogen utilization by ruminant animals, especially dairy cattle. Dr. Satter’s willingness to constantly reassess strongly held dogmas has led to a series of breakthroughs. This article highlights 6 areas of his research program that have become classics or benchmarks in the field of protein nutrition of ruminants, as well as his latest effort in revisiting phosphorus requirements in dairy cattle. Dr. Satter’s work has contributed substantially to more accurate dietary recommendations for nitrogen and phosphorus, with invaluable economic and environmental benefits to the U.S. dairy industry. Serendipity does not explain the success and impact of his research. Dr. Satter is also a "relevant generalist" who is committed to communicating research results to a broad audience. Because he broadened the definition of "proper" nutrition to include nutrient excretion in manure, his work has contributed to reduction in environmental risks associated with manure management on farms and has propelled nutrition research into the area of nutrient management of animal feeding operations.

Key Words: career achievement • agricultural sustainability • nitrogen • phosphorus






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