Epimural bacterial community structure in the rumen of Holstein cows with different responses to a long-term subacute ruminal acidosis diet challenge.
- S. U. Wetzels, E. Mann, Q. Zebeli
- Biology, MedicineJournal of Dairy Science
- 1 March 2017
Major shifts in the 3 dominating phyla and, most importantly, a loss of diversity in the epimural bacterial communities during a long-term SARA diet challenge are revealed, in which 60% concentrate supply for 4 wk was instrumental rather than the magnitude of the drop of ruminal pH below 5.8.
Intestinal microbiota profiles associated with low and high residual feed intake in chickens across two geographical locations
- Sina-Catherine Siegerstetter, S. Schmitz-Esser, B. Metzler-Zebeli
- MedicinePLoS ONE
- 15 November 2017
Results indicated that consortia of low-abundance taxa in the ileum, ceca and feces may play a role for FE in chickens, whereby only bacterial FE-associations found in ileal and cecal digesta may serve as useful targets for dietary strategies.
Transient feeding of a concentrate-rich diet increases the severity of subacute ruminal acidosis in dairy cattle.
- P. Pourazad, R. Khiaosa‐ard, Q. Zebeli
- Chemistry, MedicineJournal of Animal Science
- 1 February 2016
In conclusion, the TRA condition led to the higher severity of SARA, but factors beyond feed intake and VFA alterations seemed to play a role.
Adaptive responses in short-chain fatty acid absorption, gene expression, and bacterial community of the bovine rumen epithelium recovered from a continuous or transient high-grain feeding.
- R. Petri, S. U. Wetzels, M. Qumar, R. Khiaosa‐ard, Q. Zebeli
- Medicine, ChemistryJournal of Dairy Science
- 1 June 2019
While the rumen absorption and epithelial bacteria were able to recover to baseline levels after 8 wk of forage feeding, the time needed for re-establishment of homeostasis in host gene expression is longer, especially when high-grain feeding is interrupted.
The sources and transmission routes of microbial populations throughout a meat processing facility
- B. Zwirzitz, S. U. Wetzels, E. Selberherr
- BiologybioRxiv
- 6 September 2019
This work investigated what proportion of bacteria on meat are presumptively not animal-associated and are therefore transferred during cutting via personnel, equipment, machines, or the slaughter environment, and created a facility-specific transmission map of bacterial flow, which predicted previously unknown sources of bacterial contamination.
Evidence of In Vivo Absorption of Lactate and Modulation of Short Chain Fatty Acid Absorption from the Reticulorumen of Non-Lactating Cattle Fed High Concentrate Diets
- M. Qumar, R. Khiaosa‐ard, Q. Zebeli
- Biology, MedicinePLoS ONE
- 7 October 2016
SCFAs absorption across the reticulorumen of non-lactating cattle was enhanced by the 4-wk continuous concentrate feeding, which seems to be more advantageous in terms of rumen acidosis prevention compared to the interrupted feeding model.
Psychrophile spoilers dominate the bacterial microbiome in musculature samples of slaughter pigs.
- E. Mann, S. U. Wetzels, B. Pinior, B. Metzler-Zebeli, M. Wagner, S. Schmitz-Esser
- BiologyMeat Science
- 1 July 2016
Epimural Indicator Phylotypes of Transiently-Induced Subacute Ruminal Acidosis in Dairy Cattle
- S. U. Wetzels, E. Mann, S. Schmitz-Esser
- Biology, MedicineFrontiers in Microbiology
- 4 March 2016
Results show that the BEBM re-establishes the baseline conditions slower after a SARA challenge than ruminal pH, and key phylotypes that were reduced during both challenges may help to establish a bacterial fingerprint to facilitate understanding effects of SARA conditions on the bovine epimural bacterial microbiome and their consequences for the ruminant host.
Pyrosequencing reveals shifts in the bacterial epimural community relative to dietary concentrate amount in goats.
- S. U. Wetzels, E. Mann, S. Schmitz-Esser
- Biology, MedicineJournal of Dairy Science
- 1 August 2015
This is the first report of CBEM using deep-sequencing methods on the genus and OTU level, and it is revealed major shifts in the CBEM in response to concentrate-rich diets with potential health relevance in goats.
Unveiling the Bovine Epimural Microbiota Composition and Putative Function
- C. Pacífico, R. Petri, Q. Zebeli
- BiologyMicroorganisms
- 1 February 2021
A meta-analysis of the rumen epimural microbiota from 11 publicly available amplicon studies to assess key technical and biological sources of variation between experiments finds several pathways associated with the biosynthesis of precursor metabolites in Campylobacter, Comamonas, Desulfobulbus, and Ruminococcaceae NK4A214.
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