Bacterial Community Composition and Fermentation Patterns in the Rumen of Sika Deer (Cervus nippon) Fed Three Different Diets

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• 作者：Zhipeng Li ; André-Denis G. Wright ; Hanlu Liu ; Kun Bao ; Tietao Zhang…
• 刊名：Microbial Ecology
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：69
• 期：2
• 页码：307-318
• 全文大小：1,040 KB
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• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Microbiology
  Ecology
  Geoecology and Natural Processes
  Nature Conservation
  
• 出版者：Springer New York
• ISSN：1432-184X

文摘

Sika deer (Cervus nippon) rely on microorganisms living in the rumen to convert plant materials into chemical compounds, such as volatile fatty acids (VFAs), but how the rumen bacterial community is affected by different forages and adapt to altered diets remains poorly understood. The present study used 454-pyrosequencing of bacterial 16S ribosomal RNA (rRNA) genes to examine the relationship between rumen bacterial diversity and metabolic phenotypes using three sika deer in a 3?×- latin square design. Three sika deer were fed oak leaves (OL), corn stover (CS), or corn silage (CI), respectively. After a 7-day feeding period, when compared to the CS and CI groups, the OL group had a lower proportion of Prevotella spp. and a higher proportion of unclassified bacteria belonging to the families Succinivibrionaceae and Paraprevotellaceae (P--.05). Meanwhile, the concentration of isobutyrate was significantly lower (P--.05) in the OL group than in the CS and CI groups. There was no significant change of dominant bacterial genera in the OL group after 28?days of feeding. Conversely, total volatile fatty acids (TVFAs) showed an increase after 28?days of feeding, mainly due to the increasing of acetate, propionate, and valerate (P--.05). The interplay between bacteria and metabolism in the OL group differed from that in the CS and CI groups, especially for the interaction of TVFAs and acetate/propionate. Overall, the current study suggested that Prevotella spp. played critical roles in the fermentation of feed in the rumen of sika deer. However, the differences in interplay patterns between rumen bacterial community composition and metabolic phenotypes were altered in the native and domesticated diets indicating the changed fermentation patterns in the rumen of sika deer.