ArticleMicrobiology spectrum2026
Characteristics of the gastrointestinal tract and volatile fatty acids in plateau ruminants.
Article in Microbiology spectrum, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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9 authors.
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Abstract
High-altitude ruminants face environmental stressors such as low temperature, hypoxia, and short grazing seasons, which challenge energy acquisition and nutrient absorption. The gastrointestinal tract (GIT) plays a central role in metabolic adaptation. In this study, we collected contents from the rumen, reticulum, omasum, abomasum, duodenum, jejunum, cecum, and rectum of Pamir yaks. Microbial composition and metabolic functions across GIT regions were investigated through volatile fatty acid (VFA) determination and 16S rRNA gene sequencing. The results showed that the total VFA concentrations were highest in the forestomach and lowest in the small intestine, with the hindgut showing intermediate levels. Microbial diversity was highest in the reticulum and lowest in the jejunum. At the phylum level, Firmicutes, Bacteroidota, and Proteobacteria were the dominant bacterial taxa. At the genus level,
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