Characterization of pig saliva as the major natural habitat of Streptococcus suis by analyzing oral, fecal, vaginal, and environmental microbiota

• DOI: 10.1371/journal.pone.0215983
• Publication Date: 2019-04-24T17:40:26Z
• Authors: Kazunori Murase; Takayasu Watanabe; Sakura Arai; Hyunjung Kim; Mari Tohya; Kasumi Ishida-Kuroki; Tấn Hùng Võ; Thị Phương Bình N...; Ichiro Nakagawa; Ro Osawa; Ngọc Hải Nguyễn; Tsutomu Sekizaki
• Keywords: Prevotella; Actinobacillus

It is generally difficult to specify the sources of infection by which domestic animals may acquire pathogens. Through 16S rRNA gene amplicon sequencing, we compared composition microbiota in saliva, vaginal mucus, and feces pigs, swabs feeder troughs water dispensers collected from pig farms Vietnam. The differed between samples each sample group. Streptococcus, Actinobacillus, Moraxella, Rothia were most abundant genera significantly discriminative saliva samples, regardless plasticity changeability saliva. Moreover, species assignment genus Streptococcus revealed that suis was exceptional salivary microbiota, due being among streptococcal sharing estimated proportions 5.7%–9.4% total bacteria Thus, oral showed unique characteristics major pathogen. On other hand, β-diversity analysis distinct those others. From above results, shown be natural habitat S. suis, suggested probable source infection.