Article History
Received: 30 August 2019
Accepted: 3 January 2020
First Online: 13 January 2020
Ethics approval and consent to participate
: This study was not submitted for ethics committee review because it is a retrospective analysis of medical records of the Clinic of Ruminants, Vetsuisse Faculty, University of Zurich. All owners signed a consent form allowing us to use the animals and all the medical data for scientific analysis.
: All owners signed a consent form allowing us to publish the results of this study.
: The authors declare that they have no competing interests.