Animal Bioscience

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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In vitro fermentation profiles of different soybean oligosaccharides and their effects on skatole production and cecal microbiota of broilers

  • Zhu, Xin (College of Animal Science and Veterinary Medicine, Shenyang Agricultural University) ;
  • Xu, Miao (College of Animal Science and Veterinary Medicine, Shenyang Agricultural University) ;
  • Liu, Haiying (College of Animal Science and Veterinary Medicine, Shenyang Agricultural University) ;
  • Yang, Guiqin (College of Animal Science and Veterinary Medicine, Shenyang Agricultural University)
  • Received : 2021.09.16
  • Accepted : 2021.12.22
  • Published : 2022.08.01
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Abstract

Objective: The objective of this study was to investigate the in vitro fermentation profiles of different soybean oligosaccharides (SBOs) and their effects on skatole production and cecal microbiota of broilers. Methods: Five SBOs with varying main component contents were fermented using an in vitro batch incubation inoculated with broiler cecal microbiota. Gas production was recorded automatically, skatole, indole and short-chain fatty acids (SCFAs) were determined using high-performance liquid chromatography, and microbial changes were analyzed using 16S DNA gene sequencing. Results: The addition of SBOs increased (p<0.05) gas production, suggesting bacterial growth-stimulating activities. In addition, the concentrations of indole were significantly (p<0.05) decreased after SBO supplementation, and SBO III, with higher sucrose and stachyose contents, decreased (p<0.05) the skatole level. Our results also revealed that the fermentation of SBOs by cecal microbiota produced (p<0.05) SCFAs, which were dominated by propionic acid, butyrate acid and lactic acid compared to the control. In addition, SBO III increased (p<0.05) the abundance of Firmicutes and Subdoligranulum and decreased that of Bacteroides. Conclusion: These results suggest that SBOs with higher sucrose and stachyose contents are promising prebiotics in modulating gut microbiota and reducing odor emission in broilers.

Keywords

Acknowledgement

This work was supported by the National Natural Science Foundation of China (No. 31772618).

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