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Millard C. Calhoun, Ph.D.
Professor Emeritus, Ruminant Nutrition
Department of Animal Science
Texas A & M University
E-Mail: m-calhoun@tamu.edu
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Millard Calhoun,
professor emeritus in the Animal Nutrition Section of the Department of Animal Science, Texas A & M University, is located at the AgriLife Research and Extension Center in San Angelo. He is an adjunct professor in the Agricultural Department of Angelo State University, and a member of the Graduate Faculty at Texas A & M University and Angelo State University. He has a Ph.D. in ruminant nutrition from the University of Connecticut (1967) and bachelor's (1958) and master's (1960) degrees in animal science and animal nutrition, respectively, from the University of Delaware.
From 1989 until his
retirement in 2003, Dr. Calhoun's research focused on establishing safe levels of cotton by-products in ruminant diets. Although the primary emphasis
was on cattle, sheep and goats, work was also done with poultry and swine in order to compare the way ruminant and non-ruminant animals use gossypol. A major accomplishment was the successful development of high perfomance liquid chromatography procedures for the determination of the isomers of gossypol [(+)- and (-)- gossypol] in cotton by-products and animal tissues. These procedures have been used to characterize (+)- and (-)- gossypol in cotton by-products and to assess the effects of processing and animal, dietary and environmental factors on the availability of gossypol to animals.
