1. Department of Animal and Dairy Science, University of Georgia, Athens 30602
2. Instituto Nacional de Investigacion Agropecuaria, Canelones, Uruguay 90200
3. Institut National de la Recherche Agronomique, UMR1388 GenPhySE, Castanet Tolosan, France 31326
4. Angus Genetics Inc., St. Joseph, MO 64506