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Effects of Lactic Acid Bacteria-Inoculated Corn Silage on Bacterial Communities and Metabolites of Digestive Tract of Sheep. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8070320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Silage is widely used as ruminant feed all over the world. Lactic acid bacteria inoculants are commonly applied in silage production to improve preservation efficiency. To investigate the effects of lactic acid bacteria-inoculated silage on the bacterial communities and metabolites of the digestive tract, twenty-four local hybrid rams (a hybrid of Small Tail Han sheep and Mongolian sheep with an average initial BW 27.8 ± 3.05 kg) were randomly divided into four groups fed with corn stalk (S), corn stalk silage, corn stalk silage treated with Lentilactobacillusplantarum (P), or corn stalk silage treated with L. buchneri (B). The results showed that compared with the control and B groups, the inoculant with P significantly increased silage dry matter (DM) content, while the pH value was significantly higher than that in group B, and the aerobic stability was significantly lower than that in group B. Firmicutes and Bacteroidetes were the two dominant phyla of digestive tract microbiota in sheep. Compared with corn stalk, sheep fed with corn stalk silage showed a higher relative abundance of Prevotella. P-treated silage decreased the relative abundance of Firmicutes at the phylum level in rumen fluid. Silage treated with P or B increased the relative abundance of Prevotella, Ruminococcus, and Fibrobacter at the genus level in the rumen. A total of 498 differential metabolites in the rumen were detected when comparing the corn stalk and corn stalk silage groups. A total of 257 and 141 differential metabolites were detected when comparing the untreated silage and silages treated with P and B, respectively. These metabolites in the sheep rumen were correlated with bacterial communities, especially Butyrivibrio, Fibrobacter, and Prevotella. In conclusion, the addition of P and B during ensiling could change the fermentation and metabolites in the rumen by influencing the bacterial community. The change induced by these inoculants might be beneficial for animals’ performance and the health of ruminants.
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Li X, Chen F, Xu J, Guo L, Xiong Y, Lin Y, Ni K, Yang F. Exploring the Addition of Herbal Residues on Fermentation Quality, Bacterial Communities, and Ruminal Greenhouse Gas Emissions of Paper Mulberry Silage. Front Microbiol 2022; 12:820011. [PMID: 35222315 PMCID: PMC8874217 DOI: 10.3389/fmicb.2021.820011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 12/28/2021] [Indexed: 11/29/2022] Open
Abstract
This study aimed to investigate the influence of herbal residues on the fermentation quality and ruminal fermentation of paper mulberry silage. Clove, mint, and purple perilla residues were used as additives. Silage treatments were designed as control (no additives), 5% of clove, 5% of mint, and 5% of purple perilla. After 21 and 75 days of fermentation, the fermentation characteristics, bacterial communities, and ruminal greenhouse gas emissions in vitro incubation of paper mulberry were analyzed. The results showed that the used herbal residues could reduce the protein losses in paper mulberry silage based on the lower contents of ammoniacal nitrogen and nonprotein nitrogen. Compared with control, higher lactic acid and propionic acid contents were observed in the silages treated with mint and purple perilla but with a higher acetic acid content in clove treatment. Real-time sequencing technology (single-molecule real-time) revealed that Lactobacillus was the dominant bacteria in all silages at the genus level, whereas the bacterial abundance in the treated silages differed greatly from control at the species level. Lactobacillus hammesii abundance was the highest in control, whereas Lactobacillus acetotolerans was the first predominant in the treated silages. All the additives enhanced the digestibility of in vitro dry matter significantly. However, purple perilla decreased the production of total gas, methane, and carbon dioxide. The findings discussed earlier suggested that herbal residues have potential effects in improving fermentation quality, reducing protein loss, and modulating greenhouse gas emissions in the rumen of paper mulberry silage by shifting bacterial community composition.
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Affiliation(s)
- Xiaomei Li
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Fei Chen
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Jingjing Xu
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Linna Guo
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Yi Xiong
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Yanli Lin
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
- Beijing Sure Academy of Biosciences, Beijing, China
| | - Kuikui Ni
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
- *Correspondence: Kuikui Ni,
| | - Fuyu Yang
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
- Fuyu Yang,
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Zeng T, Li X, Guan H, Yang W, Liu W, Liu J, Du Z, Li X, Xiao Q, Wang X, Zhang X, Huang L, Xiang Q, Peng Q, Yan Y. Dynamic microbial diversity and fermentation quality of the mixed silage of corn and soybean grown in strip intercropping system. BIORESOURCE TECHNOLOGY 2020; 313:123655. [PMID: 32559709 DOI: 10.1016/j.biortech.2020.123655] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 06/11/2023]
Abstract
This study assessed the fermentation quality and microbial community of corn (Zea mays L.) and soybean (Glycine max Merr.) (CS) mixed silage in strip intercropping system. CS mixed silage increased lactic acid content and decreased ammonia-N content compared to 100% soybean (S) silage, while it decreased ammonia-N content compared to 100% corn (C) silage. The largest number of epiphytic lactic acid bacteria was detected in CS fresh materials. During ensiling, Weissella and Lactobacillus dominated silage, the relative abundance of Lactobacillus in mixed silage was higher than that in S silage with the same S variety. After aerobic exposure (AE), synergistic effect existed in low relative abundance bacteria correlating with ammonia-N content and pH at ensiling 60 days and AE 7 days. In conclusion, CS mixed silage modified microbial community and improved fermentation quality.
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Affiliation(s)
- Tairu Zeng
- Animal Science and Technology College, Sichuan Agricultural University, Chengdu 610000, China
| | - Xiaoling Li
- Animal Science and Technology College, Sichuan Agricultural University, Chengdu 610000, China
| | - Hao Guan
- Animal Science and Technology College, Sichuan Agricultural University, Chengdu 610000, China
| | - Wenyu Yang
- College of Agronmy, Sichuan Agricultural University, Wenjiang, Sichuan 611130, China
| | - Weiguo Liu
- College of Agronmy, Sichuan Agricultural University, Wenjiang, Sichuan 611130, China
| | - Jiang Liu
- College of Agronmy, Sichuan Agricultural University, Wenjiang, Sichuan 611130, China
| | - Zhaochang Du
- Animal Science and Technology College, Sichuan Agricultural University, Chengdu 610000, China
| | - Xiaomei Li
- Animal Science and Technology College, Sichuan Agricultural University, Chengdu 610000, China; College of Grassland Science and Technology China Agricultural University, Peking 100000, China
| | - Qiyin Xiao
- Institute of Agricultural Science, Garze Prefecture, Kangding 626000, China
| | - Xiaochun Wang
- College of Agronmy, Sichuan Agricultural University, Wenjiang, Sichuan 611130, China
| | - Xinquan Zhang
- Animal Science and Technology College, Sichuan Agricultural University, Chengdu 610000, China
| | - Linkai Huang
- Animal Science and Technology College, Sichuan Agricultural University, Chengdu 610000, China
| | - Quanju Xiang
- College of Resource, Sichuan Agricultural University, Chengdu 610000, China
| | - Quanhui Peng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Yanhong Yan
- Animal Science and Technology College, Sichuan Agricultural University, Chengdu 610000, China.
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