Global Research Trends and Knowledge Structures on the Role of Fermented Feed in Modulating Rumen Microbiota: A Scopus-Based Bibliometric Analysis

Randi Mulianda; Rita Rosmala Dewi; Alfath Rusdhi; Reno Martha; Melda Afrianti; Mhd Adanan Purba; Karina Mia Berutu; Rakhmad Perkasa Harahap; Masaya Matamura

doi:10.24014/jupet.v23i1.38948

Global Research Trends and Knowledge Structures on the Role of Fermented Feed in Modulating Rumen Microbiota: A Scopus-Based Bibliometric Analysis

Randi Mulianda, Rita Rosmala Dewi, Alfath Rusdhi, Reno Martha, Melda Afrianti, Mhd Adanan Purba, Karina Mia Berutu, Rakhmad Perkasa Harahap, Masaya Matamura

Abstract

This bibliometric study maps the global development of research on fermented feeds for rumen microbiota modulation, addressing the lack of quantitative synthesis on publication dynamics, thematic evolution, and collaboration structures in this rapidly expanding field. Bibliographic data retrieved from the Scopus database covering the period 1961–2024 yielded 620 peer-reviewed journal articles, analyzed using VOSviewer and the Bibliometrix R package. The results show sustained long-term growth in research output, with a pronounced acceleration since 2010. Citation analysis reveals a high degree of citation concentration, whereby a limited number of seminal studies published in the mid-1970s account for a disproportionate share of total citations. Canada (2,518 citations), the United States (2,502), and Spain (1,927) emerged as the most influential countries, while contributions from developing regions remain comparatively limited. At the journal level, the Journal of Dairy Science (87 articles) and Journal of Animal Science (83 articles) dominate publication output, indicating strong disciplinary concentration. Thematic evolution analysis demonstrates a clear transition from early research focused on rumen fermentation and digestion toward more integrative frameworks encompassing microbial ecology, nutritional interventions, and environmental sustainability. Rumen fermentation, microbial community dynamics, and methane mitigation currently dominate the research landscape, with methane mitigation identified as a high-impact yet structurally fragmented research frontier. Unlike previous bibliometric studies that examined fermented feeds or rumen fermentation in isolation, this study integrates thematic evolution and collaboration network analyses to capture the interdisciplinary progression of the field. These findings highlight the need for future experimental studies combining fermented feed strategies with rumen physiological mechanisms, molecular-based microbial analyses, and environmental performance indicators, while also providing evidence-based insights to support future research development, targeted research investment, and capacity building aligned with global sustainability and climate agendas.

Keywords

science mapping, scopus database, enteric methane mitigation, bibliometric analysis, ruminant nutritionn

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References

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DOI: http://dx.doi.org/10.24014/jupet.v23i1.38948