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Partial replacement of corn silage with sorghum-sudangrass silage improves growth performance and rumen function in Hu sheep via microbial and metabolic modulation

文献类型： 外文期刊

作者： Li, Chuang 1 ; Cheng, Zhiqiang 2 ; Sun, Xuezhao 3 ; Yang, Jingquan 1 ; Chen, Ning 1 ; Yang, Kailun 2 ; Wang, Mengzhi 4 ;

作者机构： 1.Xinjiang Acad Agr & Reclamat Sci, State Key Lab Sheep Genet Improvement & Hlth Prod, Shihezi 832000, Peoples R China

2.Xinjiang Agr Univ, Coll Anim Sci, Urumqi 830091, Peoples R China

3.AgResearch Ltd, Grasslands Res Ctr, Palmerston North 4442, New Zealand

4.Yangzhou Univ, Coll Anim Sci & Technol, Lab Metab Manipulat Herbivorous Anim Nutr, Yangzhou 225009, Peoples R China

关键词： Sorghum-sudangrass silage; Growth performance; Sheep; Rumen fermentation; Microbiota structure; Serum metabolome

期刊名称：BMC MICROBIOLOGY （ 影响因子：4.2； 五年影响因子：4.8 ）

ISSN： 1471-2180

年卷期： 2025 年 25 卷 1 期

页码：

收录情况： SCI

摘要： Background The rumen hosts a diverse microbial community and serves as a natural bioreactor that efficiently utilizes plant biomass. To explore the potential of sorghum-sudangrass silage (SS) as an alternative to whole-plant corn silage (WS), this study evaluated the growth performance, rumen microbiota, serum metabolome, and rumen fermentation characteristics of Hu sheep. The aim was to assess the feasibility of SS as a feed resource and to identify specific rumen bacteria that interact with host metabolism. Results Feeding Hu sheep a diet containing 50% WS and 50% SS (T1 group) improved both growth performance and rumen fermentation compared to a diet of 100% WS (T0 group). In contrast, replacing WS entirely with SS (T2 group) did not affect growth performance. Microbiome analysis revealed that SS inclusion increased the relative abundance of beneficial bacteria. In particular, the T1 group showed an enrichment of Sphingomonas, while the T2 group had higher levels of Bacillus, Enterococcus, and Ruminobacter. Metabolomic analysis indicated that both T1 and T2 diets enhanced purine metabolism. Conclusion Partial replacement (50%) of WS with SS improves rumen microbial composition, promotes purine metabolism, enhances rumen fermentation, and supports better growth performance in Hu sheep. These findings demonstrate that SS is a promising alternative to WS for enhancing growth and rumen function in ruminants.

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