Effects of Plant Extracts on Meat Quality, Intestinal Microbiota and Resistance to Diseases and Stresses of Food Animals—Second Edition

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Animal Nutrition".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 581

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Guest Editor
College of Animal Science and Technology, Yangzhou University, Yangzhou 225000, China
Interests: mineral nutrition; nutritional physiology; anti-stress; epigenetic modification; transcriptional regulation
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Special Issue Information

Dear Colleagues,

Under the background of the complete prohibition of feed antibiotic additives in many countries and regions, including China, the United States, and Europe, the research and development of efficient new green feed additives with plant extracts and their ability to deal with various problems in livestock and poultry breeding have gradually become one of the focuses of animal science research.

In this Special Issue, we will collect research articles, commentary, reviews, and case studies on the effects of plant extracts on meat quality, intestinal flora, resistance to disease, and stress in edible animals, so as to highlight the current knowledge and future directions in this field.

Dr. Shengchen Wang
Dr. Yun Hu
Guest Editors

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Keywords

  • plant extracts
  • feed additives
  • meat quality
  • intestinal
  • microbiota
  • disease resistance
  • stress
  • food animals

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Published Papers (1 paper)

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Research

19 pages, 1807 KB  
Article
Metagenomic Insights into the Effects of Dietary Thymol on the Structure and Function of the Rumen Microbial Community in Beef Steers Consuming Forage
by Emma P. Fukuda, Yuan Lu, Emily Fowler, Russell W. Jessup and Merritt L. Drewery
Animals 2026, 16(6), 950; https://doi.org/10.3390/ani16060950 - 18 Mar 2026
Viewed by 332
Abstract
While essential oils are gaining momentum as a strategy to modulate rumen function and potentially reduce enteric methane in cattle, little is known about how their bioactive components, terpenes, affect rumen microbes. Our objective was to evaluate how in vivo doses of thymol [...] Read more.
While essential oils are gaining momentum as a strategy to modulate rumen function and potentially reduce enteric methane in cattle, little is known about how their bioactive components, terpenes, affect rumen microbes. Our objective was to evaluate how in vivo doses of thymol affect the structure and function of the rumen microbial community via whole genome shotgun sequencing (WGS). Four beef steers were used in a 4 × 4 Latin square with four 28 d periods. Steers consumed ad libitum forage and received one of four thymol doses (0 [CON], 120 [120-T], 240 [240-T], and 480 [480-T] mg/kg forage intake). Rumen contents were separated into liquid and solid fractions, DNA was extracted, analyzed via WGS, and assessed with orthogonal contrasts. After FDR correction, no taxa were affected by thymol; however, raw p-values demonstrated responses to thymol supplementation for solid-associated uncultured Lachnospiraceae bacterium (p = 0.04), uncultured Methanobrevibacter (p = 0.05), and uncultured Coriobacteriaceae bacterium (p = 0.02). Liquid-associated uncultured Prevotellaceae bacterium (p = 0.03), Prevotella sp. (p = 0.04), and Bacteroides sp. (p = 0.02) also responded to thymol, with the highest abundances observed at various thymol doses. Genes involved in energy production and amino acid metabolism transport were observed at the highest abundances at 240-T, while genes associated with cell cycle control, cell division, and chromosome partitioning were present in the highest abundances at 120-T. The findings suggest that thymol exerts dose-dependent effects on rumen microbial abundances and functional pathways, with 240 mg/kg forage intake appearing to be the most effective dose to downregulate methanogenic enzymes while also enhancing the enzymes associated with metabolism without negatively impacting microbial diversity. Full article
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