Funding for this research was provided by:
Preparation of standard material for quality and safety testing of Animals and animal products (2013FY113300-6)
National Key Research and Development Program of China (2016YFD0500705)
Beijing Agriculture Innovation Consortium (BAIC02-2018)
Received: 25 June 2018
Accepted: 18 June 2020
First Online: 17 July 2020
Ethics approval and consent to participate
: The collection of samples involved in our study complied with national guidelines. The study proposal was reviewed and approved from Institutional Review Board of Veterinary Diagnosis Centre, China Animal Disease Control Center. The Written Informed Consent was obtained from the owners of all the involved farms before the samples were applied.
: All authors agree to the publication.
: All authors declared no competing interests.