|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 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 | Epidemiology of upper gastrointestinal symptoms in Brazil(Epi Gastro):A population-based study according to sex and age group显示文摘AIM:To determine the prevalences of symptoms consistent with gastroesophageal reflux disease(GERD)and dyspepsia in South America.METHODS:A telephone survey was conducted among adult owners of land-based telephones in S?o Paulo,Brazil,using previously validated computer-assisted sampling and survey protocols.The Portugueselanguage survey included(1)sociodemographic characteristics(e.g.,weight,height,smoking)and comorbidities;(2)dietary habits;(3)presence of symptoms consistent with GERD or dyspepsia within the prior 3mo;and(4)use of medications and other therapies to manage symptoms.Data were stratified post-hoc into three homogeneous geographical regions of S?o Paulo according to the Social Exclusion Indices of the districts and postal codes.Survey response data from each respondent were weighted by the numbers of adults and landline telephones in each household.The analyses were weighted to account for sampling design and to be representative of the S?o Paulo population according to city census data.RESULTS:Among 4570 households contacted,an adult from 3050(66.7%)agreed to participate.The nonresponse rate was 33.3%.The mean(SE)respondent age was 42.6(16.0)years.More than half of all respondents were women(53.1%),aged 18 through 49 years(66.7%),married or cohabitating(52.5%),and/or above normal-weight standards(i.e.,35.3%overweight and 16.3%obese).A total of 26.5%of women were perimenopausal.More than 20%of respondents reported highly frequent symptoms consistent with GERD(e.g.,gastric burning sensation=20.8%)or dyspepsia(e.g.,abdominal swelling/distension=20.9%)at least once per month.Prevalences of these symptoms were significantly(approximately 1.5-to 2.0-fold)higher among women than men but did not vary significantly as a function of advancing age.For instance,14.1%of women reported that they experienced stomach burning(symptom of GERD)at least twice per week,compared to 8.4%of men(P=0.012 byχ2 test).A total of 15.7%of women reported that they experienced abdominal swelling(symptom of dyspepsia)at least twice per week,compared to 6.4%of men(P<0.001byχ2 test).Despite frequent manifestations of GERD or dyspepsia,most(≥90%)respondents reported that they neither received prescription medications fromphysicians,nor took behavioral measures(e.g.,dietary modifications),to manage symptoms.CONCLUSION:Symptoms consistent with dyspepsia and GERD are prevalent in Brazil and represent major public-health and clinical challenges. | Maria do Rosário Dias de Oliveira Latorre Aline Medeiros da Silva Décio Chinzon Jaime N Eisig Telma RP Dias-Bastos | 2014 | World Journal of Gastroenterology2014，20，46： | 2 |
| 3 | In vitro toxicity of trichothecene on human erythroblastic progenitors 显示文摘 | Rio B Lautraite S and parent - Massin D | 1997 | Hum Exp Toxicol1997，16，： | 2 |
| 4 | Effects of diazepam and stress on lung inflammatory responsein OVA-sensitized rats显示文摘 | Portela C D P Tibério I F L C Leick-Maldonado E A | 2002 | Am J Physiol Lung Cell Mol Physiol2002，82，： | 1 |
| 5 | A chemical, morphological, and electrochemical (XPS, SEM/EDX, CV, and EIS) analysis of electrochemically modified electrode surfaces of natural chalcopyrite (CuFeS2) and pyrite (FeS2) in alkaline solutions显示文摘 | VELASQUEZ P LEINEN D PASCUAL J RAMOS- BARRADO J R GREZ P GOMEZ H SCHREBLER R DEL RiO R CORDOVA R | 2005 | Journal of Physical Chemistry B2005，109，1： | 1 |
| 6 | Internal fixation of proximal humerus fractures using the T2-proximal humeral nail 显示文摘 | Popeseu D Fernandez-Valencia JA Rios M | 2009 | Arch Orthop Trauma Surg2009，129，9： | 1 |
| 7 | Value of security: Modeling time-dependent phenomena and weath- er conditions 显示文摘 | Rios M A Kirschen D S Jayaweera D | 2002 | IEEE Power Engineering Review2002，22，7： | 1 |
| 8 | Use of cone beam computed tomography in implant dentistry:the international congress of oral implantologists consensus report显示文摘 | Benavides E Rios H F Ganz S D | 2012 | Implant Dent2012，21，2： | 1 |
| 9 | Thermal behavior of chro- mium electroplating sludge显示文摘 | ESPINOSA D C R TEN RIO J A S | 2001 | Waste Management2001，21，4： | 1 |
| 10 | The Effect of Brand Associations on Consumer Response显示文摘 | RIO A BELEN D RODOLFO V | 2001 | Journal of Consumer Marketing2001，18，5： | 1 |
| 11 | An exact algorithm for bilevel 0-1 knapsack problems显示文摘 | Raid M Cla′udio A Vale′rio D C | 2012 | Mathematical Problems in Engineering2012，10，： | 1 |
| 12 | Photochemical-spectrofluorimetric determination of phenothiazine compounds by unsegmented-flow methods显示文摘 | CHEN D RIOS A LUQUE De CASTRO M D | 1991 | Analyst1991，116，： | 1 |
| 13 | Universal 1/f Noise from Dissipative Self-Organized Criticality Models显示文摘 | Rios P D L Zhang Y | 1999 | Physical Review Letters1999，82，3： | 1 |
| 14 | Neuroproteetive effects of serotonin 5 - HT 1A receptor activation against ischemic cell damage in gerbil hippocampus:Involvement of NMDA receptor NR1 subunit and BDNF显示文摘 | Salazar - Colocho P Del Rio J Frechilla D | 2008 | Brain Res2008，14，1199： | 1 |
| 15 | Linear measures for polyhedral networks显示文摘 | Glieksman M E Rios P R Lewis D J | 2009 | International Journal of Materials Research2009，100，4： | 1 |
| 16 | Simultaneous flow-injection determination of chlorpromazine and promethazine by photochemical reaction显示文摘 | CHEN D RIOS A LUQUE De CASTRO M D | 1991 | Talanta1991，38，： | 1 |
| 17 | Cytotoxic activity of moronic acid and identification of the new triterpene 3,4-seco-olean-18-ene-3,28-dioic acid from Phoradendron reichenbachianum显示文摘 | RIOS M Y SALINA D VILLARREAL M L | 2001 | Planta Med2001，67，5： | 1 |
| 18 | A glimpse of the mechanisms of ion homeostasis during salt stress显示文摘 | Serrano R Mulet J M Rios G Marquez J A de Larrinoa I D Leube M P Mendizabal I Pascual - Ahuir A Proft M Ros R Montesions C | 1999 | Journal of Experimental Botany1999，50，： | 1 |
| 19 | Influence of the contact angle of silica nanopartieles at the air - water interface on the mechanical properties of the layers composed of these particles 显示文摘 | ZANG D Y RIO E DELON G | 2011 | Mol Phys2011，109，： | 1 |
| 20 | Removal of heavy metals from acid mine drainage (AMD) using coal fly ash, natural clinker and synthetic zeolites显示文摘 | Rios C A Williams C D Roberts C L | 2008 | Journal of Hazardous Materials2008，156，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员