Funding for this research was provided by:
Chiang Mai University (023/2562)
Received: 4 November 2020
Accepted: 22 April 2021
First Online: 5 May 2021
: All procedures used in this study were approved of by the Animal Care and Use Committee (FVM-ACUC), Faculty of Veterinary Medicine, Chiang Mai University (Approval number R19/2560). Written informed consent for the use of animals was obtained from farm members under the Mae Wang Dairy Cooperative.
: Not applicable.
: The authors declare that they have no competing interests.