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Tang X, Zhang L, Fan C, Wang L, Fu H, Ren S, Shen W, Jia S, Wu G, Zhang Y. Dietary Fiber Influences Bacterial Community Assembly Processes in the Gut Microbiota of Durco × Bamei Crossbred Pig. Front Microbiol 2021; 12:688554. [PMID: 34956107 PMCID: PMC8693415 DOI: 10.3389/fmicb.2021.688554] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 11/08/2021] [Indexed: 01/17/2023] Open
Abstract
Several studies have shown that dietary fiber can significantly alter the composition and structure of the gut bacterial community in humans and mammals. However, few researches have been conducted on the dynamics of the bacterial community assembly across different graded levels of dietary fiber in different gut regions. To address this, 24 Durco × Bamei crossbred pigs were randomly assigned to four experimental chows comprising graded levels of dietary fiber. Results showed that the α-and β-diversity of the bacterial community was significantly different between the cecum and the jejunum. Adding fiber to the chow significantly increased the α-diversity of the bacterial community in the jejunum and cecum, while the β-diversity decreased. The complexity of the bacterial network increased with the increase of dietary fiber in jejunal content samples, while it decreased in cecal content samples. Furthermore, we found that stochastic processes governed the bacterial community assembly of low and medium dietary fiber groups of jejunal content samples, while deterministic processes dominated the high fiber group. In addition, deterministic processes dominated all cecal content samples. Taken together, the variation of gut community composition and structure in response to dietary fiber was distinct in different gut regions, and the dynamics of bacterial community assembly across the graded levels of dietary fiber in different gut regions was also distinct. These findings enhanced our knowledge on the bacterial community assembly processes in gut ecosystems of livestock.
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Affiliation(s)
- Xianjiang Tang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Liangzhi Zhang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China
| | - Chao Fan
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Lei Wang
- Plateau Livestock Genetic Resources Protection and Innovative Utilization Key Laboratory of Qinghai Province, Qinghai Academy of Animal and Veterinary Medicine, Qinghai University, Xining, China
| | - Haibo Fu
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Shi'en Ren
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Wenjuan Shen
- Plateau Livestock Genetic Resources Protection and Innovative Utilization Key Laboratory of Qinghai Province, Qinghai Academy of Animal and Veterinary Medicine, Qinghai University, Xining, China
| | - Shangang Jia
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Guofang Wu
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Plateau Livestock Genetic Resources Protection and Innovative Utilization Key Laboratory of Qinghai Province, Qinghai Academy of Animal and Veterinary Medicine, Qinghai University, Xining, China
| | - Yanming Zhang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China.,Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China
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Chen G, Su Y, He L, Wu H, Shui S. Analysis of volatile compounds in pork from four different pig breeds using headspace solid-phase micro-extraction/gas chromatography-mass spectrometry. Food Sci Nutr 2019; 7:1261-1273. [PMID: 31024699 PMCID: PMC6475761 DOI: 10.1002/fsn3.955] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 01/08/2019] [Indexed: 11/10/2022] Open
Abstract
PURPOSE The volatile compounds that contribute to the flavor of pork are unknown. Therefore, the present study aimed to determine the differences in volatile compounds from pork meats of four different pig breeds using headspace solid-phase micro-extraction (HS-SPME)/gas chromatography-mass spectrometry (GC-MS). METHODS Piglets from four breeds (8/breed) (crossbred Ziwuling Sus scrofa [SUS] and purebreds Bamei pig [BAM], American Yorkshire pig [YOK], and Hezuo pig [HZP]) were selected. Characteristics of meat were measured. HS-SPME/GC-MS were used to analyze the volatile compounds of the meats. RESULTS The tenderness, taste, succulence, and broth flavor of the BAM and HZP were good. One hundred and eight volatile compounds with known molecular formulas were identified in BAM, 106 in SUS, 98 in YOK, and 98 in HZP. Sixty-four common volatile compounds were found in all four breeds. The highest relative amount of volatile compounds was found in the BAM. The compounds which may contribute to the flavor of pork were 3-methyl-1-butanol, 1-nonanal, octanal, hexanal, 2-pentyl-furan, 1-penten-3-one, N-morpholinomethyl-isopropyl-sulfide, methyl butyrate, and (E,E)-2, 4-decadienal. CONCLUSION The volatile compounds in pork belong to several classes, and the highest relative amount of volatile compounds was found in BAM.
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Affiliation(s)
- Guoshun Chen
- College of Animal Science and TechnologyGansu Agricultural UniversityAnning District, LanzhouChina
| | - Yingyu Su
- College of Animal Science and TechnologyGansu Agricultural UniversityAnning District, LanzhouChina
| | - Lianghong He
- College of Animal Science and TechnologyGansu Agricultural UniversityAnning District, LanzhouChina
| | - Hongbin Wu
- College of Animal Science and TechnologyGansu Agricultural UniversityAnning District, LanzhouChina
| | - Shengzhang Shui
- College of Animal Science and TechnologyGansu Agricultural UniversityAnning District, LanzhouChina
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