Funding for this research was provided by:
the Promotion Project of ESI Disciplines of YAU (2019YNAUESIMS03)
the National Key Research and Development Program of China (No. 2017YFD0500105)
the Yunnan Key Research and Development Program (No. 2018BB004)
Received: 8 November 2019
Accepted: 3 March 2020
First Online: 23 March 2020
Ethics approval and consent to participate
: For all porcine clinical samples used in this study, written consents were obtained from farm owners and all procedures were carried out in strict accordance with the Animal Ethics Procedures and Guidelines of the People’s Republic of China. All the animal protocols in this study were approved by the Animal Ethics Committee at Yunnan Agricultural University (permission code: YAUACUC2016; date of publication: July 10, 2016).
: The authors declare that they have no competing interest.