Butyrivibrio Fibrisolvens
Mostrando 1-12 de 88 artigos, teses e dissertações.
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1. A análise quantitativa de populações microbianas ruminais por qPCR em novilhas alimentadas com Leucaena leucocephala na Colômbia Tropical Dry Forest
A fermentação ruminal e metanogênisis são processos metabólicos vitais para os rumianteso e são realizados por populações microbianas afetados por fatores dietéticos, como a presença de metabólitos secundários, composição nutricional e degradabilidade. O objetivo deste estudo foi monitorar as populações de bactérias totais, metanogênicas e
Acta Sci., Anim. Sci.. Publicado em: 2015-04
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2. Bactérias tolerantes a taninos obtidas de vacas mestiças Holandês x Zebu
O objetivo deste trabalho foi isolar e caracterizar bactérias ruminais tolerantes a taninos obtidas de vacas mestiças Holandês x Zebu alimentadas com dieta composta por capim-elefante (Pennisetum purpureum) picado com ramos novos de angico-vermelho (Parapiptadenia rigida) e folhas de bananeira (Musa sp.). Um total de 117 cepas bacterianas foram isoladas a
Pesquisa Agropecuária Brasileira. Publicado em: 2011-03
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3. Monensin e yeast on oil diets fed to Nellore finishing bulls / Monensina e levedura em dietas com óleo fornecidas a touros Nelores em terminação
This work had the objective of evaluate the use of monensin, yeast and the interaction of these additives on Nellore digestive metabolism and performance. It were conducted two trials. Experiment 1. It were utilized four Nellore steers with rumen and duodenum cannulas to evaluate the diet degradability, digestibility, biohydrogenation, rumen microrganisms an
Publicado em: 2008
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4. Comparação da sensibilidade de bovinos e búfalos à intoxicação por Palicourea marcgravii (Rubiaceae)
O presente estudo foi realizado para verificar se búfalos são mais resistentes do que bovinos à ação tóxica de Palicourea marcgravii, mediante a administração da planta por via oral, simultaneamente, a bovinos e a búfalos. Foram usados sete búfalos e três bovinos. Verificou-se que em búfalos doses de 0,5 g/kg, 1,0 g/kg e 2,0 g/kg não causaram si
Pesquisa Veterinária Brasileira. Publicado em: 2003-12
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5. Isolation of Plasmid DNA from Butyrivibrio fibrisolvens†
A procedure based on successive precipitation of cell lysates with sodium dodecyl sulfate-NaCl and polyethylene glycol 6000 was developed which allows the isolation of plasmid DNA from Butyrivibrio fibrisolvens. A survey of B. fibrisolvens strains isolated from the bovine rumen showed that plasmids are a common feature of this species.
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6. Effects of several mycotoxins on specific growth rate of Butyrivibrio fibrisolvens and toxin degradation in vitro.
Four strains of Butyrivibrio fibrisolvens did not degrade aflatoxin B1. Acetyl T-2 toxin, T-2 toxin, HT-2 toxin, deoxynivalenol, diacetoxyscirpenol, verrucarin A, zearalenone, and ochratoxin A did not affect the specific growth rate of B. fibrisolvens CE51 significantly, but all were degraded to greater or lesser extents. Breakdown products were produced as
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7. Isolation and characterization of a bacteriocin (Butyrivibriocin AR10) from the ruminal anaerobe Butyrivibrio fibrisolvens AR10: evidence in support of the widespread occurrence of bacteriocin-like activity among ruminal isolates of B. fibrisolvens.
Forty-nine isolates of Butyrivibrio fibrisolvens and a single isolate of Butyrivibrio crossotus were screened for the production of inhibitors by a deferred plating procedure. Twenty-five isolates produced factors which, to various degrees, inhibited the growth of the other Butyrivibrio isolates. None of the inhibitory activity was due to bacteriophages. The
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8. Neutral sugar composition of extracellular polysaccharides produced by strains of Butyrivibrio fibrisolvens.
The extracellular polysaccharides (EPSs) produced by 37 isolates presently classified as Butyrivibrio species (or more specifically as Butyrivibrio fibrisolvens) were purified from glucose-grown cultures. The neutral sugar compositions of these EPSs were determined by both thin-layer and gas-liquid chromatographic techniques. Results showed that while the ne
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9. Sequence analysis and characterization of pOM1, a small cryptic plasmid from Butyrivibrio fibrisolvens, and its use in construction of a new family of cloning vectors for Butyrivibrios.
As a preliminary step in the development of vector systems, we have isolated and begun to characterize small, cryptic plasmids from several strains of the rumen bacterium Butyrivibrio fibrisolvens. We present here the complete nucleotide sequence of Butyrivibrio plasmid pOM1, which was isolated from B. fibrisolvens Bu49. While it is very similar in size to t
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10. Characterization of the predominant bacteria occurring in the rumen of goats (Capra hircus).
A total of 44 strains of bacteria were isolated from rumen contents of the goat. Based on morphology, Gram stain, anaerobiosis, motility, and fermentation end products, they were grouped into 11 different types. For each type, all or representative strains were characterized in detail. The type, number of strains characterized over total number of strains, a
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11. Distribution and Evolution of the Xylanase Genes xynA and xynB and Their Homologues in Strains of Butyrivibrio fibrisolvens
The ruminal bacterium Butyrivibrio fibrisolvens is being engineered by the introduction of heterologous xylanase genes in an attempt to improve the utilization of plant material in ruminants. However, relatively little is known about the diversity and distribution of the native xylanase genes in strains of B. fibrisolvens. In order to identify the most appro
American Society for Microbiology.
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12. Isolation and Characterization of Xylan-Degrading Strains of Butyrivibrio fibrisolvens from a Napier Grass-Fed Anaerobic Digester †
Six new xylanolytic bacterial strains have been isolated from a Napier grass-fed anaerobic digester. These strains were identified as Butyrivibrio fibrisolvens and were similar in many respects to ruminal isolates described previously. The new isolates exhibited a high degree of DNA homology with several ruminal strains of B. fibrisolvens. Xylan or xylose wa