1. USDA-ARS, Livestock Issues Research Unit, Lubbock, Texas, USA.
2. Department of Animal and Dairy Science, University of Georgia, Athens, Georgia, USA.
3. Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas, USA.
4. USDA-ARS Food and Feed Safety Research Unit, College Station, Texas, USA.
5. SciWrite Consulting, Canyon, Texas, USA.
6. Department of Animal and Food Sciences, Texas Tech University, Lubbock, Texas, USA.
7. Kemin Industries, Inc., Des Moines, Iowa, USA.