AUTHOR=Zhang Ze , Li Yang , Zhang Di , Chen Shuai , Lu Sien , Wang Kang , Zhou Miao , Song Zehe , Li Qingcui , Yin Jie , Liu Xiaoping TITLE=FACdb: a comprehensive resource for genes, gut microbiota, and metabolites in farm animals JOURNAL=Frontiers in Microbiology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2025.1557285 DOI=10.3389/fmicb.2025.1557285 ISSN=1664-302X