Funding for this research was provided by:
Henan Academy of Agricultural Sciences (2020JQ06)
Science and Technology Department of Henan Province (202102110100)
Ministry of Science and Technology of the People's Republic of China (2014CB542702)
ministry of agriculture
Department of Agriculture and Rural Development of Henan Province (S2012-06)
Received: 22 January 2021
Accepted: 7 July 2021
First Online: 31 July 2021
: All the animal experiment was conducted in accordance with the Chinese Regulations of Laboratory Animals—The Guidelines for the Care of Laboratory Animals (Ministry of Science and Technology of People’s Republic of China) with the approval of Animal Care and Ethics Committee of Key Laboratory of Animal Immunology of the Ministry of Agriculture of China. All effort was made to minimize the suffering of pigs.
: Not applicable.
: All authors state that they have no conflicts of interests.