Funding for this research was provided by:
National Natural Science Foundation of China (31730091, 31672436)
China Agriculture Research System (CARS-35)
Text and Data Mining valid from 2020-04-16
Received: 18 November 2019
Accepted: 20 March 2020
First Online: 16 April 2020
Ethics approval and consent to participate
: This study was carried out in accordance with the recommendations of the Animal Welfare Regulations, Institutional Animal Care and Use Committee of Sichuan Agricultural University. The protocol was approved by the Institutional Animal Care and Use Committee of Sichuan Agricultural University.
: The authors declare that they have no competing interests.