Comparative analysis of gut microbiota in free range and house fed yaks from Linzhou County
文献类型： 外文期刊
作者： Wang, Hongzhuang 1 ; Ali, Munwar 2 ; Zhu, Yong 1 ; Chen, Xiaoying 1 ; Lu, Dongyang 1 ; Liu, Yang 1 ; Li, Kun 2 ; Zhang, Chengfu 1 ;
作者机构： 1.Tibet Acad Agr & Anim Husb Sci, Inst Anim Husb & Vet Med, Lhasa 850009, Peoples R China
2.Nanjing Agr Univ, Coll Vet Med, Nanjing 210095, Peoples R China
3.Nanjing Agr Univ, Coll Vet Med, MOE Joint Int Res Lab Anim Hlth & Food Safety, Nanjing 210095, Peoples R China
关键词： House-fed; Grazing; Bos grunniens; Microbiota; 16S rRNA sequencing; Metabolomics
期刊名称：SCIENTIFIC REPORTS （ 影响因子：3.9； 五年影响因子：4.3 ）
ISSN： 2045-2322
年卷期： 2025 年 15 卷 1 期
页码：
收录情况： SCI
摘要： Gut microbiota variations in response to environmental and nutritional factors are of great significance as gut microbiota plays an integral role in nutrient metabolism, immunity, health, and disease conditions. In this context, limited studies investigated variations of gut microbiota in response to different feeding systems and environmental conditions. The current study obtained fresh fecal samples from house-fed (LS) and grazing yaks (LF) from Linzhou County. 16 S rRNA amplicon sequencing of the V3-V4 and internal transcribed spacer 2 (ITS2) domains generated 16,332 bacterial and 2345 fungus amplicon sequence variants (ASVs). Alpha and beta diversity indices revealed significant variations (p > 0.05) in gut microflora between the two groups. At the phylum level, Firmicutes, Actinobacteriota, Bacteroidota, and Patescibacteria regarding bacteria, and Ascomycota and Basidiomycota regarding fungi dominated. At the genus level, UCG-005, Rikenellaceae_RC9_gut_group, Clostridium_sensu_stricto_1, g__Muribaculaceae, UCG-010, [Eubacterium]_coprostanoligenes_group, Turicibacter, Alistipes, Prevotellaceae_UCG-003, UCG-009, Blautia, dgA-11_gut_group, Candidatus_Saccharimonas dominated in LS, while Anthrobacter and Terrisporobacter dominated in the LF group. Fungal genera like Myrothecium and Plectosphaerella dominated the LS group, while Neoascochyta, Paraphaeosphaeria, and Hypocreales dominated the LF group. Also, significant variations (p > 0.05) in gene expressions were found between the two groups. These findings provide insights into yak gut microbiota adaptations and metabolic changes in response to varied environmental conditions and can provide valuable information, optimizing feeding strategies after identifying specific differences between grazing and house-fed yaks, reducing environmental impacts, and improving yaks' health and productivity in specific geographical settings.
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