[1] ARS, Anim Genom & Improvement Lab, USDA, Beltsville, MD 20705 USA
[2] Kansas State Univ, Dept Anim Sci & Ind, Manhattan, KS 66506 USA
[3] Texas A&M Univ, Dept Anim Sci, College Stn, TX 77843 USA
[4] Univ Wisconsin, Dept Anim Sci, Madison, WI 53706 USA
[5] Univ Arkansas, Dept Anim Sci, Fayetteville, AR 72701 USA
[6] North Carolina State Univ, Dept Anim Sci, Raleigh, NC 27695 USA
[7] Univ Guelph, Dept Anim BioSci, Ctr Genet Improvement Livestock, Guelph, ON, Canada
[8] Canadian Dairy Network, Guelph, ON, Canada