Infectious Bursal Disease Virus
Mostrando 1-12 de 65 artigos, teses e dissertações.
-
1. Effects of raw propolis or water and ethanol extracts of propolis on performance, immune system, and some blood parameters of broiler breeders
ABSTRACT The objective of this study was to determine the effects of raw bee propolis and water or ethanol extract of propolis on growth performance, some blood parameters, and immunoglobulins in 15-20-week-old Ross-308 broiler breeders. The birds in the control were fed a diet without propolis, whereas the birds in the treatment groups were fed diets with r
R. Bras. Zootec.. Publicado em: 08/11/2018
-
2. Infectious Bursal Disease: Pathogenicity and Immunogenicity of Vaccines
ABSTRACT The Infectious Bursal Disease (IBD) is a contagious viral disease that affects young chickens and may cause high morbidity and mortality. As the virus is very resistant to the environment, vaccination is required in case of high infection pressure. Due to variations in the virulence degree of the vaccines available to control IBD, this study aimed a
Rev. Bras. Cienc. Avic.. Publicado em: 2016-06
-
3. 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
-
4. 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
-
5. 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
-
6. 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
-
7. 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
-
8. 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
-
9. 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
-
10. 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
-
11. 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
-
12. Infectious bursal disease: evaluation of maternal immunity and protection by vaccination of one-day old chicks against challenge with a very virulent virus isolate
Publicado em: 2010