ArticleVeterinary world2026
Comparative gut microbiome composition and predicted microbial functions in captive and free-range yaks (
Article in Veterinary world, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background and Aim: The gut microbiota is essential for nutrient digestion, immune function, and environmental adaptation in ruminants, particularly high-altitude species like yaks ( Materials and Methods: Fecal samples were collected from healthy ~2-year-old yaks (n=5 CY, n=5 FY) in Litang County, Ganzi Prefecture, Sichuan, China, during summer. DNA was extracted, and the V4 region of the Results: α-Diversity indices (e.g., Shannon p = 0.5476) showed no significant differences between CY and FY. However, β-diversity revealed distinct community structures (PCoA: PC1 30.52%, PC2 12.25%; ANOSIM R = 0.976, Conclusion: Husbandry practices profoundly influence yak gut microbiome structure and inferred metabolic potential, with free-range systems promoting, homogeneous communities suited to natural high-fiber diets while captive systems promotes fermentative and opportunistic shifts. These microbiome differences suggest opportunities for probiotic interventions to enhance yak health, productivity, and sustainability in high-altitude pastoral systems. Future metagenomic and metabolomic validation is needed.
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