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Published on: September 7, 2015
Integrated Rumen Metabolomics and Metagenomics Reveal Microbe-Metabolite Signatures Associated with Heat Tolerance in
Peng Chen1, Can Liu1, Shimeng Wang1
1Key Laboratory of Animal Genetics & Breeding and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
Animals : an Open Access Journal From MDPI
|July 28, 2026
Summary
Dairy cows
Area of Science:
- Rumen microbiome and metabolomics
- Dairy cattle physiology
- Heat stress adaptation
Background:
- Heat stress negatively impacts dairy cow productivity and rumen function.
- Rumen metabolic profiles linked to natural heat tolerance are not well understood.
Purpose of the Study:
- To investigate rumen metabolic and microbial differences between heat-tolerant (HT) and heat-sensitive (HS) dairy cows.
- To identify potential biomarkers for natural heat tolerance in dairy cattle.
Main Methods:
- Collected rumen fluid metabolomic data from HT and HS Holstein cows.
- Integrated metabolomic data with existing metagenomic data.
- Utilized untargeted LC-MS, Spearman correlation, and ROC analysis.
Main Results:
- Identified 116 differential metabolites; HS cows had higher nucleotide-related metabolites, while HT cows showed enrichment in thiamine, L-malate, and argininosuccinic acid.
- Found differential microbial taxa, including HT-enriched Prevotella and Ruminococcus flavefaciens.
- Discovered associations between rumen microbes, metabolites, and heat tolerance phenotypes.
Conclusions:
- Rumen metabolic and microbial profiles differ between heat-tolerant and heat-sensitive dairy cows.
- Specific metabolites (e.g., thiamine, L-malate) and microbes may play a role in natural heat tolerance.
- Rumen microbe-metabolite associations offer insights into dairy cow adaptation to heat stress.
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