ReviewAnimals : an open access journal from MDPI2026
Global Research Trends and the Association Between Feed Efficiency and Enteric Methane Emissions in Ruminants: A Bibliometric and Thematic Review.
Review in Animals : an open access journal from MDPI, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
12 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Enteric methane emissions and feed efficiency are increasingly being investigated as complementary traits for improving the environmental sustainability and productivity of ruminant systems. This study conducted a bibliometric and thematic review of scientific literature published between 2016 and 2025 to characterize research trends and synthesize evidence on the association between feed efficiency and enteric methane emissions in ruminants. Publications retrieved from Scopus and Web of Science were analyzed using Bibliometrix and VOSviewer, including scientific production, collaboration networks, keyword co-occurrence, thematic evolution, and burst analyses. A total of 659 publications from 158 sources were identified, with an annual growth rate of 13.97% and 40.36% international co-authorship. Scientific production increased from 37 publications in 2016 to 120 in 2025. Thematic analyses revealed a transition from the characterization of feed-efficiency and methane traits toward integrated approaches involving methane mitigation, nutrient utilization, rumen microbiology, genomics, and precision phenotyping. Evidence indicates that improved feed efficiency can contribute to lower absolute methane emissions, particularly through reduced feed intake, but does not consistently imply lower methane production relative to feed intake or productive output. Feed efficiency and methane emissions should therefore be considered complementary rather than interchangeable traits when developing sustainable breeding, nutritional, and management strategies.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.