Received: 1 February 2022
Accepted: 8 March 2022
First Online: 16 March 2022
: Not applicable: In accordance with the local regulations, ethical approvals were not required, as this study did not involve laboratory animals, living animals, human cadavers, or living human subjects. The piglets were raised as conventional livestock (not for research purposes) and they had died of natural causes prior to this study. The disposal of the carcasses was performed according to the local regulations immediately after data collection.
: Not applicable.
: The authors declare that they have no competing interests.