Funding for this research was provided by:
USDA-NIFA (2014-67015-21832)
Article History
Received: 28 February 2020
Accepted: 9 June 2020
First Online: 9 July 2020
Ethics approval
: Studies were conducted at the USDA-ARS Livestock Behavior Research Unit with the approval of Purdue Animal Care and Use Committee (protocol #1708001612).
: Not applicable.
: The authors declare no competing financial interest.