Funding for this research was provided by:
Sichuan International Science and Technology Innovation Cooperation/Hong Kong, Macao and Taiwan Science and Technology Innovation Cooperation Project (2019YFH0065)
High-level Scientific Research Foundation for the Introduction of Talents of Sichuan Agricultural University (03120322)
Received: 1 December 2019
Accepted: 13 February 2020
First Online: 18 February 2020
Ethics approval and consent to participate
: This study was approved by the Animal Ethics Committee of Sichuan Agricultural University (China; approval no. SYXK 2014-187), and all procedures including the autopsy were performed in strict accordance with the Guide for the Care and Use of Laboratory Animals (National Research Council, Bethesda, MD, USA) and the recommendations in the ARRIVE guidelines (ExternalRef removed).
: Not applicable.
: The authors declare that they have no competing interests.