Funding for this research was provided by:
National Research Foundation of Korea (2018R1D1A1B07048271))
Received: 13 April 2020
Accepted: 5 June 2020
First Online: 10 June 2020
Ethics approval and consent to participate
: This study did not receive approval from the Institutional Animal Care and Use Committee (IACUC) at Kyungpook National University because the IACUC at this University evaluates laboratory animals maintained within indoor facilities and not outdoor animals. A local veterinarian collected all of the fecal samples from the animals on different farms and sent them to the researchers. All procedures and possible consequences were explained to farm owners/managers of the surveyed farms. Written informed consent was obtained for the collection of fecal samples from the owners of the Korean native calves. Permission was also obtained from farm owners/managers prior to the collection of fecal samples.
: Not applicable.
: The authors declare that they have no competing interests.