Assessing the relationship between the rumen microbiota and feed efficiency in Nellore steers
| Autor: | Ibrahim Zuniga Chaves, Tiago Antônio de Oliveira Mendes, Maria Eugênia Zerlotti Mercadante, Hilário Cuquetto Mantovani, Marcio de Souza Duarte, Cláudia Braga Pereira Bento, Edenio Detmann, Alex J. La Reau, Garret Suen, Déborah Romaskevis Gomes Lopes, Sarah Figueiredo Martins Bonilha |
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| Rok vydání: | 2020 |
| Předmět: |
Firmicutes
Veterinary medicine RFI Biology Beef cattle SF1-1100 Biochemistry Feed conversion ratio 03 medical and health sciences Rumen Animal science SF600-1100 030304 developmental biology 0303 health sciences 030306 microbiology Research Lachnospiraceae biology.organism_classification Animal culture Methanobrevibacter Rumen microbiota Next-generation sequencing Animal Science and Zoology Piromyces 16S rRNA gene Residual feed intake ITS1 region Food Science Biotechnology |
| Zdroj: | Journal of Animal Science and Biotechnology Journal of Animal Science and Biotechnology, Vol 12, Iss 1, Pp 1-17 (2021) |
| ISSN: | 1674-9782 |
| Popis: | Background Ruminants rely upon a complex community of microbes in their rumen to convert host-indigestible feed into nutrients. However, little is known about the association between the rumen microbiota and feed efficiency traits in Nellore (Bos indicus) cattle, a breed of major economic importance to the global beef market. Here, we compare the composition of the bacterial, archaeal and fungal communities in the rumen of Nellore steers with high and low feed efficiency (FE) phenotypes, as measured by residual feed intake (RFI). Results The Firmicutes to Bacteroidetes ratio was significantly higher (P Prevotella. Archaeal community richness was lower (P Methanobrevibacter was either increased or exclusive of p-RFI steers. The fungal genus Buwchfawromyces was more abundant in the rumen solid fraction of n-RFI steers (P Piromyces was also increased in the rumen microbiota of high-efficiency steers. However, analysis of rumen fermentation variables and functional predictions indicated similar metabolic outputs for the microbiota of distinct FE groups. Conclusions Our results demonstrate that differences in the ruminal microbiota of high and low FE Nellore steers comprise specific taxa from the bacterial, archaeal and fungal communities. Biomarker OTUs belonging to the genus Piromyces were identified in animals showing high feed efficiency, whereas among archaea, Methanobrevibacter was associated with steers classified as p-RFI. The identification of specific RFI-associated microorganisms in Nellore steers could guide further studies targeting the isolation and functional characterization of rumen microbes potentially important for the energy-harvesting efficiency of ruminants. |
| Databáze: | OpenAIRE |
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