1. Department of Animal Science, South Dakota State University, Brookings, SD 57006, USA
2. Center for Nutrition and Pregnancy, Department of Animal Sciences, North Dakota State University, Fargo, ND 58108, USA
3. Department of Animal Sciences, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
4. Central Grasslands Research and Extension Center, North Dakota State University, Streeter, ND 58483, USA
5. Purina Animal Nutrition LLC, Gray Summit, MO 63039, USA
6. United States Department of Agriculture, Agriculture Research Service, U.S. Meat Animal Research Center, Clay Center, NE 68933, USA