Direct-fed microbials for enteric methane mitigation in ruminants: a function-first framework for strain selection and farm-scale translation

Clicks: 14
ID: 333812
2026
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Emerging

Ranked #97 of 110 articles by views in Translational animal science

Most read Least read

Bar heights use a square-root scale.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Abstract Enteric methane (CH₄) is both an energy loss from ruminants and an important emission from livestock production. Direct-fed microbials (DFMs) can modify rumen fermentation, but their effects on methane are inconsistent. This narrative review evaluates administered microbial interventions rather than naturally occurring taxa associated with low-methane phenotypes. A focused literature update prioritized in vivo studies that directly measured methane production, yield, or intensity. Animal evidence remains mixed. Propionibacterium-based DFMs, lactic acid bacteria, and conventional Saccharomyces cerevisiae products often show no change in daily methane, although strain- and diet-specific responses occur. Bacillus studies report both modest reductions and null responses. Recent approaches are more encouraging: a methanotroph-methylotroph consortium reduced daily methane by 12.0-14.4% in Hanwoo steers, and a rumen-derived Pichia membranifaciens strain reduced methane production, yield, and intensity in dairy cows at the higher tested dose. These findings are promising but still require independent and longer-term confirmation. Mechanistically, DFMs should not be described as eliminating ruminal H₂ production. A more defensible target is redirection of reducing equivalents and H₂/formate flux toward competing pathways, together with rumen stabilization or specific microbial antagonism. We therefore propose a function-first, evidence-tiered framework for DFM development. Farm-scale claims should require persistent changes in methane production, yield, or intensity without loss of intake, digestibility, health, or productivity.
Reference Key
openalex_W7223447989 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Md. Al-Amin Sarker, Rayhan Ahmmed Pranto, Debasree Saha, Moin Uddin, Khatun-A-Jannat Esha, Sabrina Zaman Seema, Kazi Md. Al-Noman, Mueena Jahan, Md. Morshedur Rahman
Are you one of these authors? Claim your profile
Journal Translational animal science
Year 2026
DOI
10.1093/tas/txag170
URL
https://doi.org/10.1093/tas/txag170
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.