Article History
Received: 16 February 2021
Accepted: 22 March 2021
First Online: 2 April 2021
Declarations
:
: This study was conducted according to the Swiss law for Animal Welfare and approved by the cantonal veterinary office (Animal experiment license number: SO05/16) and an informed consent was signed by the farmer.
: Not applicable.
: There are no competing interests of any of the authors that could inappropriately influence or bias the content of the paper.