Spatial heterogeneity of gut bacterial  across different gut segments of weaned piglets
The microbiota presents a compartmentalized distribution across different gut segments.To explore the biogeography of the gut microbiota along the GI tract of weaned piglet, we collected luminal samples from several GI regions, including the duodenum, jejunum, ileum, colon-proximal, and colon proximal of piglets, and performed 16S rRNA sequencing of bacterial ribosomal DNA (rDNA)