This work was supported by the National Key Research and Development Program of China [grant number 2016YDF0501200]; and the Frontier Key Science and Technology Research in the Pig Industry [grant number 2019xny-js044]. CRediT authorship contribution statement Yuanyuan Zhu: Conceptualization, Formal analysis, Writing – original draft. Qiurong Xu: Methodology, Writing – original draft. Ruili Zou: Methodology. Ran Tao: Formal analysis. Shuiping Liu: Visualization. Xiaowen Li: Data curation. Lixin Wen: acquisition, Supervision. Jing Wu: Conceptualization, Writing – review & editing. Ji Wang: Project administration, Visualization, Writing – review & editing.