Rumen ecological distribution of Pichia yeasts and their effects on rumen fermentation and microbial community
Xu Liang, Jichao Li, Pengyu Liu, Zheng Lai, Shana Huang, Fei Xie, Wei Jin, Shengyong Mao · 2026
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Description
Liang and colleagues tested yeasts taken from cow stomachs in 2026 to see whether native strains can steer rumen fermentation, the microbial breakdown of feed that powers cattle. They grew two Pichia yeast strains from rumen fluid and added each at three doses to lab vessels of rumen contents, alongside untreated controls. The team tracked gas chemistry, protein measures, and which bacteria gained or lost ground during fermentation.
Neither strain changed acidity, yet both cut ammonium nitrogen, a waste product of protein breakdown, by up to 13.3 percent at 24 hours and 22.0 percent by 48 hours in the vessels. One strain, Pichia membranifaciens, raised total volatile fatty acids, the energy products of fermentation, by 15.4 percent and favored fiber-digesting bacteria such as Ruminococcus. Surveys of real herds found both yeasts present but scarce, so the authors propose animal feeding trials next.
Catalog record
| CREATOR | Xu Liang, Jichao Li, Pengyu Liu, Zheng Lai, Shana Huang, Fei Xie, Wei Jin, Shengyong Mao |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 41 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |