文献类型： 外文期刊

作者： Wang, Long ¹ ; Hu, Ruizhi ¹ ; Ma, Siqi ¹ ; Yang, Xizi ¹ ; Gong, Jiatai ¹ ; Xiang, Hongkun ¹ ; Shi, Mingkun ¹ ; Yuan, Xupeng ² ; Chen, Liang ³ ; Zhang, Hongfu ³ ; Tan, Bie ¹ ; He, Xi ¹ ; He, Jianhua ¹ ; Wu, Shusong ¹ ;

作者机构： 1.Hunan Agr Univ, Coll Anim Sci & Technol, Hunan Collaborat Innovat Ctr Utilizat Bot Funct In, Changsha 410128, Peoples R China

2.Hunan Biol & Electromech Polytech, Coll Anim Sci & Technol, Changsha 410127, Peoples R China

3.Chinese Acad Agr Sci, Inst Anim Sci, State Key Lab Anim Nutr, Beijing 100081, Peoples R China

关键词： Prevotella copri; Bile acid; Dihydroquercetin; Gut microbiota; Piglet

期刊名称：ANIMAL NUTRITION （ 影响因子：7.5； 五年影响因子：7.3 ）

ISSN： 2405-6383

年卷期： 2025 年 20 卷

页码：

收录情况： SCI

摘要： Gut microbiota disruption during the weaning process is a significant factor of intestinal injury. Our previous studies have suggested that Prevotella may play a critical role in causing intestinal inflammation. This study aimed to clarify the impact of Prevotella copri on intestinal injury and the protecting effect by dihydroquercetin (DHQ) in weaned piglets. A total of 108 healthy Duroc x Landrace x Yorkshire weaned piglets, aged 21 d, were randomly allocated into 3 groups with 6 replicates and 6 piglets per replicate. The piglets were the following diets for 28 d: 1) a basal diet, 2) basal diet containing 1.0 x 10(8) CFU/kg P. copri, 3) basal diet supplemented with 1.0 x 10(8) CFU/kg P. copri and 100 mg/kg DHQ. Results showed that P. copri decreased significantly the average daily gain (ADG) (P < 0.001), which was recovered by supplementation of DHQ with decreased serum levels of malondialdehyde (MDA), interleukin (IL)-2 and IL-8 but increased total superoxide dismutase (T-SOD) activity and IL-10 in weaned piglets (P < 0.001). Moreover, DHQ increased the expression of tight junction proteins (claudin-2, occludin and tight junction protein zonula occludens protein-1 (ZO-1) and the mRNA expression of glutathione peroxidase 4 (GPX-4) in ileum (P < 0.001). Intestinal flora analysis showed that P. copri increased the relative abundance of Prevotella (P = 0.026) and Eubacterium coprostanoligenes group (P < 0.001), but decreased the relative abundance of Lachnospiraceae NK4A136 group (P < 0.001), while supplementation of DHQ reduced the relative abundance of Prevotella (P = 0.026). Metabolomics results indicated that P. copri enhanced the content of 12-OH bile acid, but decreased the contents of glycodeoxycholic acid (GDCA) and glycochenodeoxycholic acid (GCDCA) (P < 0.001), while DHQ reduced the 12-OH bile acid content (P < 0.001) and increased the GDCA content (P = 0.020). In summary, P. copri caused intestinal injury and reduced growth performance in weaned piglets, and DHQ showed a protective effect by modulating gut microbiota and bile acids metabolism.