Funding for this research was provided by:
Center for Equine Health, University of California, Davis
California Horse Racing Board
Received: 19 May 2020
Accepted: 8 September 2020
First Online: 1 October 2020
Ethics approval and consent to participate
: This study has been reviewed and approved by the Institutional Animal Care and Use Committee of the University of California, Davis.
: Not applicable.
: Philip Kass is a member of the BMC Veterinary Research Editorial Board (Associate Editor). No other authors have any competing interests or declarations.