Chris Calvert is Assistant Professor, Department of Animal Science, University of California, Davis; Kent Parker is Animal Resource Supervisor, Department of Animal Science, University of California, Davis; Jacquelyn Parker is a student, Department of Animal Science, University of California, Davis; Robert Sayre is Research Chemist, Cereals, U.S. Department of Agriculture Western Regional Research Center, Albany, California; Robin M. Saunders is Research Leader, Cereals, U.S. Department of Agriculture Western Regional Research Center, Albany, California;