1 Department of Animal Science, College of Agriculture and Natural Resources, Michigan State University, East Lansing, MI, 48824, USA; Department of Pharmacology and Toxicology, College of Natural Sciences, Michigan State University, East Lansing, MI, 48824, USA.
2 Department of Animal Science, College of Agriculture and Natural Resources, Michigan State University, East Lansing, MI, 48824, USA.
3 Department of Animal Science, College of Agriculture and Natural Resources, Michigan State University, East Lansing, MI, 48824, USA; Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI, 48824, USA.
4 Wadsworth Center, New York State Department of Health, Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Empire State Plaza, P.O. Box 509, Albany, NY, 12201-0509, USA.
5 Department of Animal Science, College of Agriculture and Natural Resources, Michigan State University, East Lansing, MI, 48824, USA. Electronic address: veiga@msu.edu.