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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 | 牛体内重组牛生长激素(rbST)的快速高灵敏度检测显示文摘重组牛生长激素(rbST)在一些国家和地区常被作为猪或牛的生长促进剂(用于乳牛可以增加牛奶产量),但在欧盟国家,有法规明确禁止生长激素的使用。重组牛生长激素本身是蛋白质,在生物基质中的浓度较低,且样品基质十分复杂,对其进行有效分析还存在一定难度,因而,长久以来其分析方法一直局限为酶联免疫检测法。 | Gaud Pinel Sandrine Roulet-Rochereau ylvain Chéreau Fabrice Monteau Bruno Le Bizec Paul Silcock Marie-Hélène Le Breton | 2010 | 食品安全导刊2010，，8： | 2 |
| 3 | Reactive oxygen species controls endometriosis progression显示文摘 | Ng? C Chéreau C Nicco C Weill B Chapron C Batteux F | 2009 | Am J Pathol2009，175，： | 1 |
| 4 | The mTOR/AKT inhibitor temsirolimus prevents deep infiltrating endometriosis in mice显示文摘 | Leconte M Nicco C Ng? C Chéreau C Chouzenoux S Marut W | 2011 | Am J Pathol2011，179，： | 1 |
| 5 | Vanishing bile duet syndrome显示文摘 | Reau NS Jensen DM | 2008 | Clin Liver Dis2008，12，1： | 1 |
| 6 | Sur de nouveaux bronzes oxygenes de formule Nax CoO2 (X 1 )Le systeme cobalt oxygene sodium显示文摘 | Fouassier C Matejka G Reau J M | 1973 | Journal of Solid State Chemistry1973，6，： | 1 |
| 7 | Infant and t~ddler feed- ing patterns and probh'ms: normative data and a new direction 显示文摘 | Reau NR Senturia YI) Lebailly SA | 1996 | J Dev Behav Pediatr1996，17，3： | 1 |
| 8 | Infant and toddler feeding patterns and problems: normative data and a new direction显示文摘 | Reau NR Senturia YD Lebailly SA | 1996 | J Dev Behav Pediatr1996，17，： | 1 |
| 9 | Determination of a critical nitrogen dilution curve for winter oilseed rape 显示文摘 | Colnenne C Meynard J M Reau R etal | 1998 | An- nals of Botany1998，81，31： | 1 |
| 10 | 显示文摘 | CASADO J REAU R LOPEZ NAVARRETE J T | 2006 | Chem Eur J2006，12，： | 1 |
| 11 | A combination ofanti2interleuk in 6murinemonoclonal antibody with dexametha2 sone and high2do semelphalan induces high complete responserates in advanced multiple myeloma显示文摘 | Mo reau P Harousseau J L W ijdenes J | 2000 | Br J Haematol2000，109，3： | 1 |
| 12 | Drought induced enhancement of protease activity during monocarpic senescence in wheat显示文摘 | Srivali B Reau K C | 1998 | Current Science1998，75，11： | 1 |
| 13 | Mechanical properties of nanostructured silicon carbide consolidated by spark plasma sintering 显示文摘 | Lorrette C Reau A Briottet L | 2013 | Journal of the European Ceramic Society2013，33，1： | 1 |
| 14 | Betaine accumulation and betaine aldehyde dehydrogenase in spinach leaves显示文摘 | PAN S M MO REAU R A YU C | 1981 | Plant Physiol1981，67，： | 1 |
| 15 | Long - term al- terations of colonic nerve - mast cell interactions induced by neonatal maternal deprivation in rats 显示文摘 | B~reau F Salvador - Cartier C Houdeau E | 2009 | Gut2009，57，5： | 1 |
| 16 | 显示文摘 | CASADO J REAU R HERNANDEZ V | 2005 | Synth Met2005，153，： | 1 |
| 17 | 显示文摘 | Reau J M Poulain M | 1989 | Mater Chem Phys1989，23，12： | 1 |
| 18 | Ezrin is an e12 fector of hepatocyte growth factor2 mediated mi- gration and morphogmesis in epithelial cell 显示文摘 | Crepaldi T Gaut Reau A Comoglio PM | 1997 | J Cell Biol1997，138，2： | 1 |
| 19 | New radio immunoassay for the detection of free IL-2 receptor in supernatants of murine helper and cytotoxic T2cell lines显示文摘 | Mo reau JL Theze Z | 1997 | Ann Inst Pasteur Immunol1997，137，1： | 1 |
| 20 | The oxidation induced by antimyeloperoxidase antibodies triggers fibrosis in microscopic polyangiitis显示文摘 | Guilpain P Chéreau C Goulvestre C | 2011 | Eur Respir2011，37，6： | 1 |
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