Funding for this research was provided by:
Fundamental Research Funds for the Central Universities (XDJK2019F001)
Chongqing Special Project of Social Livelihood Science and Technology Innovation (cstc2015shmszx80033)
Received: 8 October 2018
Accepted: 5 September 2019
First Online: 12 September 2019
Ethics approval and consent to participate
: This study was performed in accordance with the recommendations in the Guide for the Care and Use of Laboratory Animals of the Ministry of Health, China. All experimental protocols were approved by the Institutional Animal Ethics Committee of Southwest University (Approval no. IAECSWU20170921) and performed accordingly. The objectives, protocols and potential risks were clearly explained to all participating farm owners. Written informed consent was obtained from all participating farm owners.
: Not applicable.
: The authors declare that they have no competing interests.