1. Division of Agriculture, Department of Animal Science, University of Arkansas, Fayetteville, AR
2. USDA, ARS, Dairy Forage Research Center, Marshfield, WI
3. Department of Agriculture and Environmental Sciences, Lincoln University, Jefferson City, MO
4. Purina Animal Nutrition Center, Gray Summit, MO
5. USDA, ARS, Dairy Forage Research Center, Madison, WI
6. Arlington Agricultural Research Station, University of Wisconsin, Arlington, WI
7. Department of Animal and Veterinary Technology, Tarleton State University, Stephenville, TX