Funding for this research was provided by:
Key Laboratory for Preventive Research of Emerging Animal Diseases in Foshan University (KLPREAD201801-09, KLPREAD201801-08)
National Plan for Science, Technology and Innovation (2012A020100001)
Department of Education of Guangdong Province (2014KTSPT037)
Received: 5 November 2018
Accepted: 25 April 2019
First Online: 6 May 2019
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of the College of Life Science and Engineering, Foshan University. Animal experiments were performed according to the <i>Guidance for Experimental Animal Welfare and Ethical Treatment</i> of the Ministry of Science and Technology of China (ExternalRef removed). There were no vulnerable populations involved, and no endangered species were used in the experiments. Farm managers gave permission for their animal samples to be used in this study, and sample collection was conducted by local authorities and veterinarians.
: Not applicable.
: The authors declare that they have no competing interests.
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