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First Detection and Molecular Characterization of Novel Variant Infectious Bursal Disease Virus (Genotype A2dB1b) in Egypt.
Viruses
December 2023
Department of Birds and Rabbits Medicine, Faculty of Veterinary Medicine, University of Sadat City, Menoufia 32958, Egypt.
Infectious bursal disease (IBD) is an immunosuppressive disease causing significant damage to the poultry industry worldwide. Its etiological agent is infectious bursal disease virus (IBDV), a highly resistant RNA virus whose genetic variability considerably affects disease manifestation, diagnosis and control, primarily pursued by vaccination. In Egypt, very virulent strains (genotype A3B2), responsible for typical IBD signs and lesions and high mortality, have historically prevailed.
View Article and Find Full Text PDFInfectious bursal disease virus: predicting viral pathotype using machine learning models focused on early changes in total blood cell counts.
Vet Res
October 2023
Agence Nationale de Sécurité Sanitaire de L'alimentation, de L'environnement Et du Travail, 41 Rue de Beaucemaine, 22440, Ploufragan, France.
Infectious bursal disease (IBD) is an avian viral disease caused in chickens by infectious bursal disease virus (IBDV). IBDV strains (Avibirnavirus genus, Birnaviridae family) exhibit different pathotypes, for which no molecular marker is available yet. The different pathotypes, ranging from sub-clinical to inducing immunosuppression and high mortality, are currently determined through a 10-day-long animal experiment designed to compare mortality and clinical score of the uncharacterized strain with references strains.
View Article and Find Full Text PDFEpidemiology and laboratory diagnosis of very virulent infectious bursal disease virus in vaccinated chickens in Khartoum, Sudan.
Open Vet J
April 2022
Department of Microbiology, Faculty of Veterinary Medicine, University of Khartoum, Khartoum, Sudan.
Background: Infectious Bursal Disease (IBD, Gumboro disease) has become more severe than in early outbreaks in the 1980s. The present research aims to study the epidemiology of IBD in Khartoum state and compare some commonly used laboratory techniques for diagnosis.
Method: We collected epidemiological data from 30 farms that showed signs suggestive of IBD, estimated the morbidity and mortality rates, and interviewed the owners about the type and the doses of the used vaccines.
Assessing the antigenicity of different VP3 regions of infectious bursal disease virus in chickens from South Brazil.
BMC Vet Res
July 2021
Instituto Carlos Chagas/ICC, Fundação Oswaldo Cruz/Fiocruz, Curitiba, PR, Brazil.
Background: Infectious bursal disease (IBD), also known as Gumboro disease, is a viral infection that causes mortality and immunosuppression in chickens (Gallus gallus). VP2 and VP3 are the major structural viral capsid components and are the most immunogenic proteins of IBD virus (IBDV). Reliable diagnostic tests using VP2 and VP3 produced in heterologous systems are important tools to control this infection.
View Article and Find Full Text PDFEffects of feeding of vitamin E or vitamin C on egg hatchability, performance, carcass traits and immunity in broiler chickens.
Anim Biotechnol
April 2023
Department of DETO, Section of Veterinary Science and Animal Production, University of Bari 'Aldo Moro', Bari, Italy.
The effect of feeding of different levels of vitamins C and E on egg hatchability, immune response, growth and carcass traits of broiler chickens were investigated. A total of 672 fertilized eggs were assigned to one of eight experimental groups having three replicates with 28 eggs as follows: (1) negative control (not injected); (2) positive control (injected with 0.2 mL deionized water); (3) vitamin C at 1 mg; (4) vitamin C at 3 mg; (5) vitamin C at 6 mg; (6) vitamin E at 0.
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