Funding for this research was provided by:
Major Science and Technology Projects in Hubei Province (2020ABA016)
Fundamental Research Funds for the Central Universities (2662020DKPY005)
National Natural Science Foundation of China (31802039)
china agriculture research system of mof and mara (CARS-35)
danish pig levy fond
Received: 4 February 2021
Accepted: 2 September 2021
First Online: 7 October 2021
: Data recording and sample collection were conducted following Danish laws of management and welfare procedures for pig production.
: Not applicable.
: The authors declare that they have no competing interests.