Funding for this research was provided by:
Swedish University of Agricultural Sciences
Received: 20 December 2021
Accepted: 11 March 2022
First Online: 12 April 2022
: This study was approved by an ethical permission from the Swedish Board of Agriculture, processed by the committee för ethics of Uppsala in Sweden (Dnr 5.8.18-06256/2019) entitled Scientific investigations effectuated following ordinary disease investigations in animals.
: The authors declare that the owners of the pigs, which were equal to the owners of the abattoir, gave a consent for publication of the data.
: The authors declare no competing interests.