Received: 1 October 2020
Accepted: 25 November 2020
First Online: 3 December 2020
Ethics approval and consent to participate
: This is a retrospective study, all piglets were referred to the University Clinic for Swine for diagnostic purposes by the owner and herd veterinarian. Therefore neither an authorisation according to the Austrian Act on Animal Experiments nor an ethics approval in line with Good Scientific Practice is necessary.
: Not applicable.
: The authors declare that they have no competing interests.