Funding for this research was provided by:
Shandong “Double Tops” Program (SYL2017YSTD12)
National Natural Science Foundation of China (31501931, 31330074)
Program of New Breed Development via Transgenic Technology (2016ZX080011-006)
National Nonprofit Institute Research Grant (2018-YWF-YB-7, Y2016JC07)
Foshan University Initiative Scientific Research Program
Received: 18 October 2018
Accepted: 4 February 2020
First Online: 22 February 2020
Ethics approval and consent to participate
: All animals were treated humanely according to criteria outlined in the “Guide for the Care and Use of Laboratory Animals” published by the Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (Beijing, China). Procedures were approved by the Animal Care and Use Committee. Pigs were slaughtered following the Animal Care Guidelines of the Ethics committee of Chinese Academy of Agricultural Sciences.
: Not applicable.
: The authors declare that they have no competing interests.