Ibdv
Mostrando 1-12 de 50 artigos, teses e dissertações.
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1. Efficient assembly of full-length infectious clone of Brazilian IBDV isolate by homologous recombination in yeast
The Infectious Bursal Disease Virus (IBDV) causes immunosuppression in young chickens. Advances in molecular virology and vaccines for IBDV have been achieved by viral reverse genetics (VRG). VRG for IBDV has undergone changes over time, however all strategies used to generate particles of IBDV involves multiple rounds of amplification and need of in vitro l
Braz. J. Microbiol.. Publicado em: 2014-12
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2. Immune response elicited by the oral administration of an intermediate strain of IBDV in chickens
The immune response elicited by the oral inoculation of an intermediate strain of infectious bursal disease virus was studied in chickens. A strong over expression of IL-6, IL-8, IFNα and IFNγ was observed in bursa at 3 days post inoculation together with an increase in splenic NO2 release. An influx of T-lymphocytes was also detected.
Braz. J. Microbiol.. Publicado em: 2014-12
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3. Canarypox virus expressing infectious bursal disease VP2 protein as immunogen for chickens
Canarypox viruses (CNPV) carrying the coding sequence of VP2 protein from infectious bursal disease virus (IBDV) were obtained. These viruses were able to express VP2 protein in vitro and to induce IBDV-neutralizing antibodies when inoculated in specific pathogen-free chickens demonstrating that CNPV platform is usefulness to develop immunogens for chickens.
Braz. J. Microbiol.. Publicado em: 2014
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4. Partial VP1 sequencing of Brazilian infectious bursal disease virus strains
Infectious bursal disease virus (IBDV) is classified according to the antigenicity and virulence into classical virulent (cv), very virulent (vv), and antigenic variant strains. The molecular basis for the IBDV antigenic variation is well established and is associated to the capsid protein, VP2 (gene VP2 of segment A), whereas both VP2 and the RNA-dependent
Braz. J. Microbiol.. Publicado em: 2012-09
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5. Investigation on Newcastle Disease Virus (NDV), Infectious Bursal Disease Virus (IBDV) and Avian Poxvirus (APV) in magellanic penguins in Southern region of Brazil
To investigate the exposure of the Newcastle disease virus (NDV), infectious bursal disease virus (IBDV) and avian poxvirus (APV) in Magellanic penguins found on the beaches in Southern regions of Brazil, the frequency of serum antibodies was estimated in 89 samples taken during 2005 and 2006. All the penguins were negative for the presence of antibodies aga
Brazilian Archives of Biology and Technology. Publicado em: 2012-08
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6. Immunomodulatory and growth-promoting effect of a probiotic supplemented in the feed of broiler chicks vaccinated against infectious bursal disease
This study was designed to investigate the effects of a probiotic plus an immunomodulatory product on the growth performance, immune response and net economic returns of broiler chicks vaccinated against Infectious bursal diseases virus (IBDV). A flock of 350 day-old chicks were equally and randomly distributed in seven groups, each comprising 50 birds. A mi
Revista Brasileira de Ciência Avícola. Publicado em: 2012-06
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7. Análise da diversidade genética e evolução molecular de Infectious bursal disease virus (IBDV) / Analysis of genetic diversity and molecular evolution of Infectious bursal disease virus (IBDV)
Infectious bursal disease virus (IBDV) is considered one of the most important pathogens for chickens of the poultry industry. Considering the differences in levels of virulence among isolates of IBDV, this paper proposes a non-arbitrary genotyping definition and a unified nomenclature for the viral isolates of IBDV. In this approach, the sets of 96 VP2 and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2011
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8. Identificação de novas possíveis variantes do Infectious Bursal Disease Virus (IBDV) / Identification of possible new variants of Infectious Bursal Disease Vírus (IBDV)
The Brazilian poultry industry is the worlds leading exporter of chickens meat. One of main agents causing losses is the virus of infectious bursal disease-IBDV, belonging to the family Birnaviridae.There are two serotypes of IBDV: serotypes 1 and 2, and all the viruses able to cause disease in birds belong to serotype 1. In Brazil, the virus has been respon
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2010
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9. Análise molecular parcial dos genes VP1 e VP2 do vírus da doença infecciosa da bursa isolados no Brasil / Analysis on partial sequence of VP1 and VP2 genes of the Brazilian infectious bursal disease virus isolated in Brazil
A doença infecciosa da bursa (IBD), denominada também doença de Gumboro, é uma doença aguda, imunossupressora, altamente contagiosa de aves jovens e de grande importância econômica para a avicultura. O vírus da doença infecciosa da bursa (IBDV), sorotipo 1, pode ser classificado de acordo com sua antigenicidade e patogenicidade em amostras clássica
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2010
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10. Effect of maternally-derived antibodies on the performance and immunity of broilers induced by in ovo or post-hatching immunizations with a live vaccine against infectious bursal disease
The interference of low or high maternal antibodies titers on the attenuated infectious bursal disease (IBD) virus (IBDV) vaccine infection and its effects on the performance of broilers vaccinated at the 18th day of incubation (in ovo), at one day of age (subcutaneously-SC), or at 15 days of age (drinking water-DW) were investigated. After a series of three
Revista Brasileira de Ciência Avícola. Publicado em: 2009-03
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11. Sequenciamento e análise filogenética de isolados do vírus da doença infecciosa bursal de surtos ocorridos em lotes de poedeiras no estado de Minas Gerais
O sequenciamento e a análise filogenética a partir da seqüência nucleotídica do gene que codifica a proteína VP2 foram realizados com o intuito de caracterizar os agentes causadores de dois surtos da doença infecciosa bursal em lotes de poedeiras do estado Minas Gerais, em 2004. Os resultados indicam que os surtos analisados podem estar relacionados c
Brazilian Journal of Microbiology. Publicado em: 2009-03
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12. Anticorpos contra vírus em galinhas de terreiro do Estado do Rio Grande do Sul, Brasil
No Brasil, a população de aves conhecida como galinhas de terreiro encontra-se fora do sistema de biosseguridade aplicada às criações comerciais. Para investigar a presença de anticorpos contra alguns vírus específicos nesta população, foram coletadas amostras de sangue de 867 aves não-vacinadas em 60 propriedades de 22 municípios do Estado do Ri
Ciência Rural. Publicado em: 2008-10