Received: 26 May 2021
Accepted: 5 January 2022
First Online: 18 January 2022
: All methods and animal experiments were approved by the University of Pretoria’s Research and Animal Ethics committee under project number #V015–18 and complied with ARRIVE guidelines. Permission to perform the study under Section 20 of the South African Animal Diseases Act, 1984 (Act no. 35 of 1984) was granted by the National Director of Animal Health under permit no. 12/1/1/99.
: Not applicable.
: The authors declare that they have no competing interests.