J.L. Firkins
Agricultural and Biological Sciences · The Ohio State University
Publications
200
Citations
10,766
Est. group size
~2
Recurring co-author estimate
Active years
43
Publishing since 1984
This researcher studies how the microbial community in the rumen (the fermentation chamber in cattle stomachs) breaks down protein, fiber, and nitrogen compounds, and how this affects nutrition and digestion in dairy cows. Much of the work involves building and testing mathematical and feed-evaluation models that predict nutrient flows from the rumen to the rest of the digestive tract, alongside more recent genomic studies of rumen microbes. The research is aimed at improving understanding of dairy cattle feed efficiency and nutrient utilization.
Publication output has fluctuated over the last decade, with peaks around 2017, 2019, and 2023, but has slowed in the most recent few years, averaging about 4-5 papers per year over the last five years.
Generated by claude-sonnet-5 from public bibliographic data · Jul 20, 2026
- Genome-resolved multi-omics provide new insights into microbial nitrogen utilization by the rumen microbiota
Microbiome · 2026
- Culture techniques for ciliate protozoa from the rumen: Recent advances and persistent challenges
Anaerobe · 2024
- International Symposium on Ruminant Physiology: Current perspective on rumen microbial ecology to improve fiber digestibility
Journal of Dairy Science · 2024
- Ability of three dairy feed evaluation systems to predict postruminal outflows of amino acids in dairy cows: A meta-analysis
Journal of Dairy Science · 2024
- Ability of three dairy feed evaluation systems to predict postruminal outflows of nitrogenous compounds in dairy cows: A meta-analysis
Journal of Dairy Science · 2023
- Advances in understanding protein requirements and utilization in dairy cattle
Burleigh Dodds series in agricultural science · 2023
- Invited Review: Advances in rumen efficiency
Applied Animal Science · 2021
- Ruminal protein breakdown and ammonia assimilation
Burleigh Dodds series in agricultural science · 2020
- Technical note: Methodological and feed factors affecting measurement of protein A, B, and C fractions, degradation rate, and intestinal digestibility of rumen-undegraded protein
Journal of Dairy Science · 2018
- Factors affecting efficiency of AA and energy use in lactating dairy cows
Prodinra (INRA Bordeaux-Aquitaine) · 2018
- Amino acid composition of rumen bacteria and protozoa in cattle
Journal of Dairy Science · 2017
- Physically adjusted neutral detergent fiber system for lactating dairy cow rations. I: Deriving equations that identify factors that influence effectiveness of fiber
Journal of Dairy Science · 2017
- Genomes of rumen bacteria encode atypical pathways for fermenting hexoses to short‐chain fatty acids
Environmental Microbiology · 2017
- Evaluation of the National Research Council (2001) dairy model and derivation of new prediction equations. 2. Rumen degradable and undegradable protein
Journal of Dairy Science · 2017
- Physically adjusted neutral detergent fiber system for lactating dairy cow rations. II: Development of feeding recommendations
Journal of Dairy Science · 2017
- Journal of Dairy Science×35
- Figshare×8
- Journal of Animal Science×5
- Frontiers in Microbiology×3
- The ISME Journal×2
- C. Lee
Agricultural and Biological Sciences · The Ohio State University
- M. L. Eastridge
Agricultural and Biological Sciences · The Ohio State University
- Chanhee Lee
Agricultural and Biological Sciences · The Ohio State University
- L.R. Rebelo
Agricultural and Biological Sciences · The Ohio State University
- R. P. Lemenager
Agricultural and Biological Sciences · Purdue University West Lafayette
This profile was generated automatically from public scholarly data (OpenAlex). Group size and activity levels are estimates derived from co-authorship patterns.
Last updated Jul 19, 2026.
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