1. US Dairy Forage Research Center, United States Department of Agriculture Agricultural Research Service (USDA-ARS), 1925 Linden Drive, Madison, WI 53706, USA
2. Phase Genomics, 1617 8th Ave N, Seattle, WA 98109, USA
3. Noble Research Institute, 2510 Sam Noble Parkway, Ardmore, OK 73401, USA
4. US Meat Animal Research Center, United States Department of Agriculture Agricultural Research Service (USDA-ARS), PO Box 166 (State Spur 18D), Clay Center, NE 68933, USA