ENFERMEDAD DE GUMBORO PDF

Infectious bursal disease (also known as Gumboro disease) is an Publisher: La bursitis infecciosa (enfermedad de Gumboro) es una patología viral específica. The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of. Clasificación de cepas del virus de la Enfermedad de Gumboro (RT-PCR, aislamientos y estudios de protección cruzada) y la optimización de la aplicación de.

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Pathotypic variants very virulent viruses remain antigenically related to classical viruses.

Antigenic variants of the infectious bursal disease virus possess modified neutralising epitopes that allow enfermedax to evade the action of maternally-derived or vaccine-induced antibodies. Autogenous or multivalent vaccines are required to control antigenic variants in areas where classical and variant virus strains coexist. Mathematical calculation of the optimal vaccination time and the use of vaccines resistant to maternally-derived antibodies have improved the control of very virulent viruses.

It is still prevalent in properly vaccinated flocks carrying specific antibodies at levels normally high enough to prevent the disease. Various factors influence the vaccination schedule.

Infectious Bursal Disease

Control is best achieved by improved biosecurity and vaccination. Various highly sensitive molecular techniques have clarified the viral determinants of antigenicity and pathogenicity of the infectious bursal disease virus.

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Search Search this site: Infectious bursal disease also known as Gumboro disease is an immunosuppressive viral disease specific to chickens. Interactive animations are provided to illustrate, in a simplified form, the interaction of IBD virus and circulating neutralising antibodies. Gumboro Disease or Infectious bursal disease virus IBDV is a chicken disease targeting the Bursa of Fabricius, an important organ in the young chicken’s developing immune system.

enfermedad de gumboro en Mexico (infeccion de la bursa de Fabricius) [1978]

View animations International site versions Spanish Turkish. The causative agent, a Birna virus, destroys immature B-lymphocytes in the Bursa of Fabricius resulting in immunosuppression.

Clinical signs Severity of disease is dependant on the virulence of the infective virus, and the immune status of the infected bird. Gumboro control requires a balanced approach including hygienic measures and vaccination.

The aim of the site is to provide a platform for peer reviewed disease information, vaccination information and links to other relevant Gumboro topics.

However, all content will still be available. There is no IBD vaccination schedule that can be routinely recommended. Vaccination schedules There is no IBD vaccination schedule that can be routinely recommended.

The First Line of Defence Interactive animations are provided to illustrate, in a simplified form, the interaction of IBD virus and circulating neutralising antibodies. The difficulty in controlling pathotypic variants is linked to the difficulty of eliciting an early immune response, because of the risk of the vaccine virus being enfsrmedad by maternal antibodies. Common causes apart, failure of vaccination against infectious bursal disease is associated mainly with early vaccination in flocks of unknown immune status and with the evolution of viruses circulating in the field, leading to antigenic drift enffrmedad a sharp rise in pathogenicity.

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Enfermedad de Gumboro by Annie Villalobos on Prezi

You have JavaScript disabled This may result in reduced functionality and affect the graphical presentation of this site. In spite of all the information amassed on the antigenic and immunological characteristics of the virus, the disease has not yet been brought fully under control.

However, these markers are not universally recognised and tend to be considered as evolutionary markers. Two clinical pictures are distinguished: Infectious Bursal Disease Gumboro. This may result in reduced functionality and affect the graphical presentation of this site.