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| 1 | Assessing the relationship between the rumen microbiota and feed efficiency in Nellore steers显示文摘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<0.05)in positive-RFI steers(p-RFI,low feed efficiency)than in negative-RFI(n-RFI,high feed efficiency)steers.The differences in bacterial composition from steers with high and low FE were mainly associated with members of the families Lachnospiraceae,Ruminococcaceae and Christensenellaceae,as well as the genus Prevotella.Archaeal community richness was lower(P<0.05)in p-RFI than in n-RFI steers and the genus 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<0.05)and a highly abundant OTU belonging to the genus Piromyces was also increased in the rumen microbiota of highefficiency 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. | Déborah Romaskevis Gomes Lopes Márcio de Souza Duarte Alex J.La Reau Ibrahim Zuniga Chaves Tiago Antônio de Oliveira Mendes Edenio Detmann Cláudia Braga Pereira Bento Maria Eugênia Zerlotti Mercadante Sarah Figueiredo Martins Bonilha Garret Suen Hilário Cuquetto Mantovani | 2021 | Journal of Animal Science and Biotechnology2021，12，4： | 3 |
| 2 | 显示文摘 | LUNARDI C N BONILHA J B S TEDESCO A C | 2002 | J Luminescence2002，99，： | 1 |
| 3 | Improvements in survival and neurodevelopmental outcomes in surgical treatment of hypoplastic left heart syndrome: a meta-analytic review显示文摘 | Sistino J J Bonilha HS | 2012 | J Extra Corpor Technol2012，44，4： | 1 |
| 4 | Longitudinal analysis of gray and white matter loss in patients with systemic lupus erythe- matosus显示文摘 | Appenzeller S Bonilha L Rio PA | 2007 | Neuroimage2007，34，2： | 1 |
| 5 | Does resection of the medial temporal lobe improve the outcome of temporal lobe epilepsy surgery 显示文摘 | Bonilha L Yasuda CL Rorden C | 2007 | Epilepsia2007，48，3： | 1 |
| 6 | Risk factors and outcome in 100 patients with aneurysmal subarachnoid hemonrrhage 显示文摘 | Bonilha L Marques EL Carelli EF | 2001 | Arq Neuropsiquiatr2001，59，3： | 1 |
| 7 | Bilateral anterior thalamic nucleus lesions and highfrequency stimulation are protective against pilocarpineinduced seizures and status epilepticus显示文摘 | Hamani C Ewerton FI Bonilha SM | 2004 | Neurosurgery2004，54，1： | 1 |
| 8 | Focus on molecules: ezrin显示文摘 | BONILHA V L | 2007 | Exp Eye Res2007，84，4： | 1 |
| 9 | Proteomic characterization of isolated retinal pigment epithelium microvilli 显示文摘 | Bonilha VL Bhattacharya SK West KA | 2004 | Mol Cell Proteom2004，3，11： | 1 |
| 10 | Bilateral anterior tha- lamic nucleus lesions and high-frequency stimulation are protective a- gainst pilocarpine-induced seizures and status epilepticus显示文摘 | Hamani C Ewerton F I Bonilha S M | 2004 | Neuro- surgery2004，54，1： | 1 |
| 11 | Texture Analysis of Medical hnages 显示文摘 | Castellano G Bonilha L Li I M | 2004 | Clinical Radiology2004，59，12： | 1 |
| 12 | Texture analysis of medi- cal images 显示文摘 | Castellano G Bonilha L Li LM | 2004 | Clin Radio12004，59，12： | 1 |
| 13 | Protocol for volumetric segmentation of medial temporal structures using high-resolution 3D magnetic resonance imaging 显示文摘 | Bonilha L Kobayashi E Cendes F | 2004 | Hum Brain Mapp2004，22，2： | 1 |
| 14 | Oxidative damageinduced inflammation initiates age-related macular degeneration 显示文摘 | Hollyfield JG Bonilha VL Rayborn ME | 2008 | Nat Med2008，14，2： | 1 |
| 15 | Oxidative damage-induced inflammation initiates age-related macular degeneration 显示文摘 | Hollyfield JG Bonilha VL Rayborn ME Yang X Shadrach KG Lu L | 2008 | Nat Med2008，14，2： | 1 |
| 16 | Oxidative damage- induced inflammation initiates age-related macular degeneration 显示文摘 | Hollyfield JG Bonilha VL Rayborn ME | 2008 | Nat Med2008，14，2： | 1 |
| 17 | Oxidative damage-induced inflammation initiates age-related macular degeneration 显示文摘 | Hollyfield JG Bonilha VL Rayborn ME Yang X Shadrach KG Lu L | 2008 | Nat Med2008，14，2： | 1 |
| 18 | Neurocognitive deficits and prefrontal cortical atrophy in patients with schizophrenia显示文摘 | Bonilha L Molnar C Horner MD | 2008 | Schizophr Res2008，101，1： | 1 |
| 19 | Intraplaque hemorrhage in symptomatic intracranial atherosclerotic disease 显示文摘 | Turan TN Bonilha L Morgan PS | 2011 | J Neuroimaging2011，21，： | 1 |
| 20 | Creating a mastery experience during the voice evaluation显示文摘 | Bonilha H S Dawson A E | 2012 | Journal of Voice2012，17，： | 1 |
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