Fig. 5

Timeline evolution of the ruminant microbiome studies. (A) Cumulative number of published papers related to ruminant microbiome (PubMed search query: microbiome OR microbiota OR metagenome AND cow OR cattle OR sheep OR lamb OR rumen OR ruminants OR camels OR camelids OR Buffalo OR Bison [cumulative total = 4,820]) from 2000 to 2022 (up to 26 October). (B) Cumulative evolution of total sample metadata by body site attribute. Bar chart plots were made using body site data of cattle, sheep and goats, including in vivo and in vitro samples. Metadata for 2022 is up to June