Calves were approximately 1.5-year-old castrated male cattle (i.e., steer)
kept in a 30 X 35 m2 pen at the Kansas State University Beef Cattle
Research Center in Manhattan, KS.
Data collection was supported by U.S. National Institute of Health (NIH)
grant R01GM117618 as part of the joint National Science
Foundation-NIH-United States Department of Agriculture Ecology and
Evolution of Infectious Disease program.