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Tea Tree Oil Improves Energy Metabolism, Non-Specific Immunity, and Microbiota Diversity via the Intestine-Hepatopancreas Axis in Macrobrachium rosenbergii under Low Fish Meal Diet Administration

文献类型： 外文期刊

作者： Liu, Mingyang 1 ; Xu, Xiaodi 1 ; Sun, Cunxin 1 ; Zheng, Xiaochuan 2 ; Zhou, Qunlan 1 ; Song, Changyou 2 ; Xu, Pao 1 ; Gao, Qiang 3 ; Liu, Bo 1 ;

作者机构： 1.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Peoples R China

2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Germplasm Resources, Minist Agr & Rural Affairs, Wuxi 214081, Peoples R China

3.Minist Agr & Rural Affairs, Zhejiang Inst Freshwater Fisheries, Key Lab Hlth Freshwater Aquaculture, Key Lab Fish Hlth & Nutr Zhejiang Prov, Huzhou 313001, Peoples R China

关键词： M. rosenbergii; alternative fish meal diet; plant essential oil; intestinal microbes; energy metabolism; crustacean immunity

期刊名称：ANTIOXIDANTS （ 影响因子：7.0； 五年影响因子：7.3 ）

ISSN：

年卷期： 2023 年 12 卷 10 期

页码：

收录情况： SCI

摘要： Tea tree oil (TTO) is an essential plant oil with diverse antibacterial and antioxidant properties; however, whether the role played by TTO in low fish meal (LF) diets induced the observed effects in the farmed crustaceans remains unclear. Therefore, this study used Macrobrachium rosenbergii as the model crustacean, and an 8-week feeding experiment with NF (normal fish meal), LF (soybean meal replacing 40% fish meal), and LFT (LF with 200 mg/kg TTO) diets was conducted to evaluate the positive effects of TTO under the LF diet. Compared to the NF diet, the LF diet reduced hemolymph antioxidant capacity and non-specific immunity, and induced hepatopancreas apoptosis and damage. However, in comparison with LF, LTF significantly ameliorated morphological impairment in the hepatopancreas, improved hepatopancreas energy metabolism by upregulating the Bcl-2/Bax and Akt/mTOR pathways, and enhanced antioxidant and non-specific immune capacity by activating the NF-kappa B/NO pathway. In addition, LFT repaired intestinal barrier injury and the imbalance of intestinal microbiota induced by the LF diet. Moreover, the Pearson correlation revealed the variations of the above indicators, which were related to the abundance changes of Klebsiella, Clostridium sensu stricto 12, Thermobifida, Bifidobacterium, and Alistipes, indicating that these microbes might serve as prospective targets for the intestine-hepatopancreas axis to affect hepatopancreas apoptosis, metabolism, and non-specific immunity. In summary, 200 mg/kg TTO supplementation mediated gut microbiota and positively improved energy metabolism and non-specific immunity, thereby alleviating hepatopancreas dysplasia and damage induced by the LF diet in M. rosenbergii.

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