1. International Organization Affairs, Foreign Agricultural Service, U.S. Department of Agriculture, Washington, D.C. 20250
2. Department of Agronomy-Bioclimatology, Purdue University, West Lafayette, Indiana 47907
3. Cooperative State Research Service, U.S. Department of Agriculture
4. Department of Dairy Husbandry, University of Missouri-Columbia, Columbia, Missouri 65201
5. Board of Trustees, International Livestock Center for Africa
6. South Central Poultry Research Laboratory, U.S. Department of Agriculture, ARS, Mississippi State, Mississippi 39762
7. U.S. Department of Agriculture, Beltsville, Maryland 20705
8. University of Alaska, Institute of Agricultural Sciences, Palmer, Alaska
9. Dept. of Biological Sciences, University of Nevada, Las Vegas 89154; and Laboratory of Environmental Patho-Physiology, University of Nevada, Boulder City, Nevada 89005