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Fu Y, Yao S, Wang T, Lu Y, Han H, Liu X, Lv D, Ma X, Guan S, Yao Y, Liu Y, Yu H, Li S, Yang N, Liu G. Effects of melatonin on rumen microorganisms and methane production in dairy cow: results from in vitro and in vivo studies. MICROBIOME 2023; 11:196. [PMID: 37644507 PMCID: PMC10463863 DOI: 10.1186/s40168-023-01620-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 07/13/2023] [Indexed: 08/31/2023]
Abstract
BACKGROUND Methane (CH4) is a major greenhouse gas, and ruminants are one of the sources of CH4 which is produced by the rumen microbiota. Modification of the rumen microbiota compositions will impact the CH4 production. In this study, the effects of melatonin on methane production in cows were investigated both in the in vitro and in vivo studies. RESULTS Melatonin treatment significantly reduced methane production in both studies. The cows treated with melatonin reduced methane emission from their respiration by approximately 50%. The potential mechanisms are multiple. First, melatonin lowers the volatile fatty acids (VFAs) production in rumen and reduces the raw material for CH4 synthesis. Second, melatonin not only reduces the abundance of Methanobacterium which are responsible for generating methane but also inhibits the populations of protozoa to break the symbiotic relationship between Methanobacterium and protozoa in rumen to further lowers the CH4 production. The reduced VFA production is not associated with food intake, and it seems also not to jeopardize the nutritional status of the cows. This was reflected by the increased milk lipid and protein contents in melatonin treated compared to the control cows. It is likely that the energy used to synthesize methane is saved to compensate the reduced VFA production. CONCLUSION This study enlightens the potential mechanisms by which melatonin reduces rumen methane production in dairy cows. Considering the greenhouse effects of methane on global warming, these findings provide valuable information using different approaches to achieve low carbon dairy farming to reduce the methane emission. Video Abstract.
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Affiliation(s)
- Yao Fu
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Songyang Yao
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Tiankun Wang
- Beijing Changping District Animal Disease Prevention and Control Center, Beijing, China
| | - Yongqiang Lu
- Beijing General Station of Animal Husbandry, Beijing, China
| | - Huigang Han
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xuening Liu
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Dongying Lv
- Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Xiao Ma
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shengyu Guan
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yujun Yao
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yunjie Liu
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Haiying Yu
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shengli Li
- College of Animal Science and Technology, China Agricultural University, Beijing, China
- Beijing Jingwa Agricultural Science and Technology Innovation Center, Beijing, China
| | - Ning Yang
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Guoshi Liu
- College of Animal Science and Technology, China Agricultural University, Beijing, China.
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Zhou X, Pak S, Li D, Dong L, Chen F, Hu X, Ma L. Bamboo Shoots Modulate Gut Microbiota, Eliminate Obesity in High-Fat-Diet-Fed Mice and Improve Lipid Metabolism. Foods 2023; 12:foods12071380. [PMID: 37048203 PMCID: PMC10093345 DOI: 10.3390/foods12071380] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/14/2023] [Accepted: 03/22/2023] [Indexed: 04/14/2023] Open
Abstract
Bamboo shoots (BS) have a variety of nutritional benefits; however, their anti-obesity effect and its underlying mechanism of action are still unclear. In this study, we investigated the protective effect of BS against high-fat diet (HFD)-induced gut dysbiosis in mice. After 12 weeks of feeding C57BL/6J mice either on a normal or an HFD with or without BS, metabolic indicators, including blood lipids and glucose tolerance, were measured. 16S rRNA gene sequencing and metabolomics were used to identify alterations in gut microbiota composition and fecal metabolic profiling. The results demonstrated that BS supplementation reduced body weight by 30.56%, mitigated liver damage, and improved insulin resistance and inflammation in obese mice. In addition, BS increased short-chain fatty acid (SCFA) levels and SCFA-producing bacteria (e.g., Lachnospiraceae_NK4A136_group and Norank_f_Muribaculaceae), and reduced levels of harmful bacteria (e.g., Blautia and Burkholderia-Paraburkholderia). Finally, BS increased many beneficial fecal metabolites, such as fatty acids and bile acids, which are highly relevant to the altered gut microbiota. Based on the modulatory effect of BS on microbiota composition and gut metabolite levels observed in this study, we suggest that BS may be beneficial in treating obesity and its related complications.
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Affiliation(s)
- Xiaolu Zhou
- National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetables Processing Ministry of Agriculture, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - SolJu Pak
- National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetables Processing Ministry of Agriculture, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Daotong Li
- National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetables Processing Ministry of Agriculture, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Li Dong
- National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetables Processing Ministry of Agriculture, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Fang Chen
- National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetables Processing Ministry of Agriculture, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Xiaosong Hu
- National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetables Processing Ministry of Agriculture, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Lingjun Ma
- National Engineering Research Center for Fruit and Vegetable Processing, Key Laboratory of Fruit and Vegetables Processing Ministry of Agriculture, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
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Zhou H, Guo Y, Liu Z, Wu H, Zhao J, Cao Z, Zhang H, Shang H. Comfrey polysaccharides modulate the gut microbiota and its metabolites SCFAs and affect the production performance of laying hens. Int J Biol Macromol 2022; 215:45-56. [PMID: 35718145 DOI: 10.1016/j.ijbiomac.2022.06.075] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/17/2022] [Accepted: 06/11/2022] [Indexed: 12/24/2022]
Abstract
Effects of dietary supplementation of comfrey polysaccharides (CPs) on production performance, egg quality, and microbial composition of cecum in laying hens were evaluated. A total of 240 laying hens were allocated into 4 groups with 6 replicates per group. The laying hens were fed diets containing CPs at levels of 0, 0.5, 1.0, and 1.5 %, respectively. The results showed that the egg production rate increased by 5.97 %, the egg mass improved by 6.71 %, and the feed conversion rate reduced by 5.43 % in the 1.0 % supplementation group of CPs compared with those in the control group. The digestibility of ash, crude fat, and phosphorus was notably improved by the addition of CPs at 1.0 % (P < 0.05). The relative abundances of Bacteroidetes at the phylum level, Bacteroidaceae, Rikenellaceae, and Prevotellaceae at the family level were increased by CPs (P < 0.05). The relative abundances of Bacteroides, Megamonas, Rikenellaceae_RC9_gut_group, [Ruminococcus]_torques_group, Methanobrevibacter, Desulfovibrio, Romboutsia, Alistipes, and Intestinimonas at the genus level were increased by CPs (P < 0.05). Dietary supplementation of CPs could enhance the production performance of laying hens, which might be related to the improvement of nutrient digestibility and microbial community modulations in the cecum. Therefore, CPs have potential application value as prebiotics in laying hens.
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Affiliation(s)
- Haizhu Zhou
- College of Forestry and Pratacultural Science, Jilin Agricultural University, Changchun 130118, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Yang Guo
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Zhenhua Liu
- The Third Affiliated Clinical Hospital of Changchun University of Chinese Medicine, Changchun 130000, China
| | - Hongxin Wu
- Institute of Grassland Research, CAAS, Hohhot 010010, China
| | - Jiangchao Zhao
- Department of Animal Science, University of Arkansas, Fayetteville 72701, USA
| | - Zihang Cao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Hexiang Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Hongmei Shang
- College of Forestry and Pratacultural Science, Jilin Agricultural University, Changchun 130118, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China; Jilin Provincial Key Lab of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun 130118, China.
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