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| Registros recuperados: 91 | |
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| Dodin, A; Dosso, M; Guillou, M. |
| There exists no biochemical test allowing to define the pathogenicity of a bacterium, still less for a Vibrionaceae. Two essential characters are to be retained to hold responsible an isolated germ, for an illness: 1) the binding factor, the identification is difficult but a double diffusion of agar should simplify the method; 2) the search for the choleric toxin or a common part of the choleric toxin (toxin LT or ST of E. coli ). Here again, simplified techniques may be used. The acquirement of a plasmid responsible for the binding factor or for the toxin production of the non-pathogenic Vibrionaceae in the origin of certain epidemic diseases in France and in the world. Frequently, epidemics due to common germs (Aeromonas hydrophila of Africa) lead to... |
| Tipo: Text |
Palavras-chave: Aeromonas hydrophila; Vibrionaceae; Bacteria; Ecology; Microorganisms; Hosts; Bacterial diseases; Pathogenic bacteria. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-999.pdf |
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| Messana, Juliana Duarte; Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista “Júlio de Mesquita Filho”; Berchielli, Telma Teresinha; Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista “Júlio de Mesquita Filho”; Arcuri, Pedro Braga; Empresa Brasileira de Pesquisa Agropecuária, Setor Gado de Leite; Ribeiro, Andressa Ferreira; Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista “Júlio de Mesquita Filho”; Fiorentini, Giovani; Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista “Júlio de Mesquita Filho”; Canesin, Roberta Carrilho; Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista “Júlio de Mesquita Filho”. |
| Protozoa population, microbial synthesis efficiency and rumen degradability of dry matter and neutral detergent fiber in cattle fed on diets with different lipid rates were evaluated. Nine 16-month-old Nelore young bulls, cannulated in the rumen and duodenum, weighing 232 ± 35 kg, were used in the trial. Experimental design consisted of a 3 x 3 square in triplicate, comprising the following treatments: 2, 4 and 6% lipid in diet. In situ degradability was assessed by rumen incubation of corn silage, soybean, soybean meal and citrus pulp during 0, 3, 6, 12, 24, 48, 72 and 96h. The flow of microbial nitrogen and microbial efficiency were not influenced (p > 0.05) by the inclusion of lipid levels in the diet. When the animals received diet with 4%... |
| Tipo: Pesquisa de campo e analises laboratoriais |
Palavras-chave: 5.04.00.00-2 (Zootecnia) degradability; Fat; Microorganisms; Ruminants; Soybean. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12729 |
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| Bermúdez Acosta, Jelvys; González Delgado, Alejandro; Castro Hernández, Yoelvis; Ortiz Guilarte, Eudalys; Núñez Moreira, Roberto; Oramas García, Julio; García García, Yaliany. |
| El propósito de esta investigación fue estudiar la contaminación de un ecosistema de manglar impactado con hidrocarburos en el sector centro sur de Cayo Santa María, Jardines del Rey, Cuba. Para el estudio de los indicadores microbiológicos y fisicoquímicos fue diseñado un muestreo estratificado, donde se seleccionaron dos estratos y diez estaciones de muestreo, considerando los patrones de flujos de marea en pleamar y bajamar, así como el impacto perceptible de la contaminación. La determinación de las poblaciones de microorganismos heterótrofos totales (BHT) y degradadores de petróleo (BDP) en agua y sedimentos se realizó por el método de conteo de colonias, expresadas como UFC·mL-1 o UFC· g-1 según la matriz de análisis. El contenido de hidrocarburos... |
| Tipo: Journal Contribution |
Palavras-chave: ASW; Cuba; Degradation; Dispersion; Hydrocarbons; Microorganisms; Pollution. |
| Ano: 2014 |
URL: http://hdl.handle.net/1834/5912 |
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| Michoud, Grégoire. |
| Since the discovery of hydrothermal vents in 1977, a small number of studies have allowed the isolation and characterization of microorganisms that can withstand high pressures and temperatures. Among these, Pyrococcus yayanosii, a hyperthermophilic archaea of the order Thermococcales, came from the Ashadze site (Mid-Atlantic Ridge) at 4100 m depth. This species represents the first organism both hyperthermophilic and strict piezophilic described to date. It cannot divide at pressures below 20 MPa and its optimal growth pressure is 52 MPa. In order to study the mechanisms used by this species to grow under high pressures, transcriptomics (DNA chips) and proteomics (LC-MS/MS) experiments have been carried out at different pressures, notably sub- and... |
| Tipo: Text |
Palavras-chave: Micro-organismes; Pression; Piézophile extrême; Hyperthermophile; Microorganisms; Hyperthermophilic. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00609/72138/70890.pdf |
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| Perea, J.; Brito, A.I.. |
| Se evaluó la cinética de fermentación ácido láctica desarrollada por los cultivos probióticos Bifigur y Bioyogur, en una leche descremada, con adición indistinta de fibras dietéticas solubles (inulina) e insolubles (salvado de trigo). Las evaluaciones se realizaron tomando muestras de la leche recién inoculada y cada 0,5 h hasta la coagulación para expresar gráficamente los valores medios de acidez y pH contra el tiempo. A las 24 h se determinó la viabilidad de los microorganismos inoculados. Las curvas de fermentación presentaron un comportamiento típico, con mayor cinética en la variante con salvado de trigo inoculada con cultivo de Bioyogur, con respecto a la que utilizó inulina y cultivo de Bifigur. La inulina mostró a su vez propiedades estimuladoras... |
| Tipo: Journal Contribution |
Palavras-chave: Food; Microorganisms; Fermentation. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/4721 |
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| RAMOS,LEONARDO R.V.; PEDROSA,VIRGÍNIA F.; MORI,AGNES; ANDRADE,CARLOS F.F. DE; ROMANO,LUIS A.; ABREU,PAULO C.; TESSER,MARCELO B.. |
| ABSTRACT Four soybean meal-based diets containing increasing levels of an enzyme complex (E50, E100, E150 and E200 at 50, 100, 150 and 200 g ton-1, respectively) and one soybean meal-based diet without the enzyme complex (E0) were fed in triplicate to M. liza juveniles in a semi-static flow system with 20 fish per tank for 75 days. There were no differences between the treatments for animal performance parameters, but fish fed the enzyme complex treatment exhibited significantly (P<0.05) higher values of calcium bone retention compared with control fish. Although there was no relationship between bacterial counts in different sections of the gastrointestinal tract or enzyme levels, filamentous bacteria were increased in E50 compared with E150. All of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carbohydrase; Growth; Histology; Microorganisms; Mullet; Phytase. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100341 |
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| Pommepuy, Monique; Hervio Heath, Dominique; Caprais, Marie-paule; Gourmelon, Michele; Le Saux, Jean-claude; Le Guyader, Soizick. |
| Introduction : "The occurrence of pathogenic microorganisms in seawater or in shellfish could exist anytime sewage from human or animal origin would be discharged to the coast" (Metcalf, 1982). According to the diseases occurring in the human population or in animals, pathogens might be present in recreational waters or in shellfish. Thus, the presence of human enteric viruses (norovirus, astrovirus, rotavirus, hepatitisAvirus (HAV)) and pathogenic bacteria (Salmonella, Listeria monocytogenes, Shiga-toxin-producing Escherichia coli (STEC), Vibrio cholerae, Vibrio parahaemolyticus, etc.) has been reported in coastal areas for a long time (Colwell, 1978; Metcalf, 1978; Melnick et al., 1979; Grimes, 1991; Bosch et al., 2001;Kong et al., 2002). These... |
| Tipo: Text |
Palavras-chave: Estimating model; Infection dose; Microorganisms; STEC; Bacteria; Virus; Fecal contamination; Pathogenic agent; Marine sediment; Estuarine water; Coastal area; Marine water. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1207.pdf |
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| Registros recuperados: 91 | |
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