Funding for this research was provided by:
National Key R&D Program of China (2017YFD0501901)
Beijing Natural Science Foundation (6164041)
Agricultural Science and Technology Innovation Program (ASTIP-IAS02)
National Natural Science Foundation of China (31872337)
Received: 5 February 2020
Accepted: 23 September 2020
First Online: 8 October 2020
Ethics approval and consent to participate
: All animal procedures were performed according to the guidelines established by the Ministry of Science and Technology (Beijing, China), and the experimental protocols were approved by the Animal Ethics Committee from Science Research Department of the Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS) (Beijing, China).
: Not applicable.
: The authors declare that they have no competing interests.