Animal Husbandry and Feed Science ›› 2025, Vol. 46 ›› Issue (1): 72-82.doi: 10.12160/j.issn.1672-5190.2025.01.010

• Animal Production and Management • Previous Articles     Next Articles

Research Progress on Plant Extract Regulating Methane Emissions in Ruminants Based on Bibliometric Analysis

XIN Manxi1, SUN Yuzhuo2, LIU Jianfeng3, LIU Xiujuan4, LI Wenting5, ZHANG Chunhua5   

  1. 1. Xilingol League Animal Husbandry Station, Xilinhot 026000, China;
    2. Ordos Agricultural and Livestock Product Quality Safety Center, Ordos 017000, China;
    3. Jungar Banner Animal Disease Prevention and Control Center, Ordos 010300, China;
    4. Jungar Banner Bureau of Agriculture and Animal Husbandry, Ordos 010499, China;
    5. Institute of Animal Nutrition and Feed Science, Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences/Inner Mongolia Key Laboratory of Herbivorous Animal Nutrition Science/Key Laboratory of Healthy Breeding and Quality Regulation of Herbivorous Livestock, Ministry of Agriculture and Rural Affairs (Co-Established by Ministry and Province), Hohhot 010031, China
  • Received:2024-11-09 Online:2025-01-30 Published:2025-04-03

Abstract: [Objective] To analyze the research trends and hotspots in the regulation of methane emissions in ruminants by plant extracts. [Methods] Relevant literature published from 2003 to 2023 in the field of methane emission regulation in ruminants by plant extracts in the Web of Science (WoS) Core Collection database was collected. Bibliometric visualization tools CiteSpace 6.2.R6 and VOSviewer 1.6.18 were employed to analyze publication volume, contributing countries (regions), authors, institutions, and keywords, thereby identifying research trends and hotspots in this field. [Results] From 2003 to 2023, a total of 1,145 articles were published in this field of methane emission regulation in ruminants by plant extracts, with an overall upward trend in annual publication volume. Between 2021 and 2023, 374 articles were published, accounting for 32.66% of the total. In terms of countries (regions), the United States ranked first, with 198 articles (17.29% of the total). Among authors, WANAPAT M had the highest number of publications (39 articles, 3.41% of the total). In terms of institutional contributions, Agriculture and Agri-Food Canada ranked first, with 62 articles (5.41% of the total), and exhibited the highest level of activity and strongest collaboration with external entities. Keywords with high betweenness centrality (>0.1) and frequency included "plant extracts" "in vitro" and "fermentation" indicating their central role in the keyword network and their close connections with other keywords, as well as their significance as core topics in this research field. The literature keywords were clustered into 10 categories: "beef cattle" "Yucca schidigera" "essential oil" "methane emission" "condensed tannin" "meat quality" "greenhouse gas" "plant secondary metabolites" "essential oils" and "natural plant extracts" .The keyword "sheep" had the highest burst strength (14.60) and was a focus during 2007—2013, followed by "populations" (burst strength: 8.98), which was a hotspot during 2013—2017. Keywords such as "reduce methane emissions" and "nutrient digestibility" were prominent during 2017—2023. [Conclusion] The research trends and hotspots in the regulation of methane emissions in ruminants by plant extracts were clarified. The effects of different types of plant extracts on methane emissions in ruminants and the synergistic effects among various plant essential oils are likely to be key research directions in the future.

Key words: plant extracts, methane emissions, bibliometrics, ruminants

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