1. West Central Research and Outreach Center, University of Minnesota, Morris 56267
2. Department of Animal Science, Michigan State University, E. Lansing 48824
3. Department of Animal Sciences and Industry, Kansas State University, Manhattan 66506
4. Department of Animal Sciences, The Ohio State University, Columbus 43210
5. Department of Animal Science, University of Missouri, Columbia 65211
6. Minnesota Extension, University of Minnesota, Willmar 56201