AUTHOR=Wu Jianghong , Li Xiaolong , Xu Xiaojiang TITLE=Editorial: Multi-Omics Approaches to Study Complex Traits in Domestic Animals JOURNAL=Frontiers in Systems Biology VOLUME=1 YEAR=2021 URL=https://www.frontiersin.org/journals/systems-biology/articles/10.3389/fsysb.2021.771644 DOI=10.3389/fsysb.2021.771644 ISSN=2674-0702