FIG. 1.

nMDS ordination of gut microbial communities identified by gut section and diet. (A) Gut microbial communities from the duodenum (triangles), jejunum (inverted triangles), ileum (circles), and ceca (squares) from all birds (n = 48) regardless of diet. (B) Same nMDS as in panel A. However, samples are identified by both gut section and diet. Gut microbial communities from the four gut sections of birds on the barley control diet are identified as duodenum (gray triangles), jejunum (inverted gray triangles), ileum (gray circles), and ceca (gray squares), while those of birds on the barley diet supplemented with enzyme are identified as duodenum (black triangles), jejunum (black inverted triangles), ileum (black circles), and ceca (black squares). The ordination is based on Bray-Curtis similarities calculated from fourth-root transformed OTU abundances (147 OTUs).