Funding for this research was provided by:
Agriculture Research System of China (CARS-39)
Text and Data Mining valid from 2019-09-02
Received: 6 March 2019
Accepted: 9 July 2019
First Online: 2 September 2019
Ethics approval and consent to participate
: All animal management and experimental procedures followed the animal care protocols approved by the China Agricultural University Animal Care and Use Ethics Committee.
: Not applicable.
: The authors declare that they have no competing interests.