Funding for this research was provided by:
Agricultural Science and Technology Innovation Program (ASTIP-IAS02)
Received: 15 October 2020
Accepted: 1 March 2021
First Online: 3 May 2021
: All the experiments on pigs were performed under the guidance of the Chinese Academy of Sciences and Institute of Animal Science, CAAS, China.
: Not applicable.
: The authors declare that they have no competing interests.