Results 91 to 100 of about 437 (109)
Journal of Animal, Poultry & Fish ProductionAhmed Mahmoud Abdel-Ghany +2 more
openaire +1 more source
Efficacy of HVT-IBDV Vector Vaccine Against Recent Egyptian vvIBDV in Commercial Broiler Chickens
International Journal of Poultry Science, 2012 The efficacy of a turkey herpesvirus (HVT-IBD) vector vaccine encoding the VP2 gene of Infectious Bursal Disease (IBD) was evaluated in comparison with classic vaccines on two commercial broiler chicken farms (A and B), with high levels of Maternal Derived Antibodies (MDA).
Awad A Shehata +2 more
exaly +3 more sources
A single amino acid V4I substitution in VP1 attenuates virulence of very virulent infectious bursal disease virus (vvIBDV) in SPF chickens and increases replication in CEF cells [PDF]
Virology, 2013 Infectious bursal disease virus (IBDV) is a birnavirus that causes immunosuppressive disease in chickens. The emergence of very virulent IBDV (vvIBDV) has brought new challenges for this disease. The molecular determinants for the high pathogenicity of vvIBDV are not fully understood. Previous studies focused mostly on the VP2 protein on segment A, but
Xiaomei Wang, Yulong Gao, Yongqiang Wang
exaly +4 more sources
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Avian Diseases, 2006
Bursal samples were collected from commercial broiler flocks exhibiting clinical signs suggestive of infectious bursal disease (IBD). The presence of IBD virus (IBDV) was confirmed by partial amplification of the VP2 and VP1 genes by reverse transcription and polymerase chain reaction.
Francisco Panzera +2 more
exaly +5 more sources
Bursal samples were collected from commercial broiler flocks exhibiting clinical signs suggestive of infectious bursal disease (IBD). The presence of IBD virus (IBDV) was confirmed by partial amplification of the VP2 and VP1 genes by reverse transcription and polymerase chain reaction.
Francisco Panzera +2 more
exaly +5 more sources
Veterinary Microbiology, 2016
The study evaluated the prophylactic potential of resiquimod (R-848), a synthetic TLR7 agonist, against very virulent infectious bursal disease virus (vvIBDV) infection in chicken. Specific pathogen free White Leghorn chicks of three week age were treated with R-848 (50μg/bird, intramuscular) or PBS (n=26/group).
Saravanan Ramakrishnan +2 more
exaly +3 more sources
The study evaluated the prophylactic potential of resiquimod (R-848), a synthetic TLR7 agonist, against very virulent infectious bursal disease virus (vvIBDV) infection in chicken. Specific pathogen free White Leghorn chicks of three week age were treated with R-848 (50μg/bird, intramuscular) or PBS (n=26/group).
Saravanan Ramakrishnan +2 more
exaly +3 more sources
Evaluation of Spirulina Platensis Efficacy Against Local Field Vvibdv Challenge in Broiler Chickens
Alexandria Journal of Veterinary Sciences, 2023The antiviral and immunostimulant effect of dietary supplementation of Spirulina platensis (SP) against Infectious bursal disease (IBD) was assessed as follows; 126 one-day-old cobb broiler chicks were randomly distributed into six groups (21 birds/group with three replicates, 7 birds each): negative control (non-vaccinated, and non-challenged ; NC ...
Mahmoud Sedeik +4 more
openaire +1 more source
Simultaneous alteration of residues 279 and 284 of the VP2 major capsid protein of a very virulent Infectious Bursal Disease Virus (vvIBDV) strain did not lead to attenuation in chickens [PDF]
Virology Journal, 2014 Il a été démontré que l'adaptation en culture cellulaire du virus très virulent de la bursite infectieuse (vvIBDV) était principalement associée aux résidus 253, 279 et 284 de la protéine de capside VP2. La mutation unique A284T s'est avérée critique pour le tropisme de culture cellulaire, mais n'a pas conféré de réplication virale efficace, ce qui ...
Helmi Mardassi, Abdeljalil Ghram
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International Journal of Biological Macromolecules
Chicken infectious bursal disease (IBD) is an acute, highly contagious, lethal, and immunosuppressive disease caused by the infectious bursal disease virus (IBDV). The newly emerged novel variant IBDV (nVarIBDV) and the continuously circulating very virulent IBDV (vvIBDV) are the two predominant epidemic strains that pose a threat to the poultry ...
Jingzhe Han, Ziwen Wu, Runhang Liu
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Chicken infectious bursal disease (IBD) is an acute, highly contagious, lethal, and immunosuppressive disease caused by the infectious bursal disease virus (IBDV). The newly emerged novel variant IBDV (nVarIBDV) and the continuously circulating very virulent IBDV (vvIBDV) are the two predominant epidemic strains that pose a threat to the poultry ...
Jingzhe Han, Ziwen Wu, Runhang Liu
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Veterinary Research Communications
Infectious Bursal Disease (IBD), or Gumboro disease, is an acute, highly contagious viral infection that primarily affects young chickens, causing immunosuppression and mortality. This study aimed to characterize the genetic and pathological features of recent IBD outbreaks in Kashmir, India.
Showkat Shah +2 more
exaly +3 more sources
Infectious Bursal Disease (IBD), or Gumboro disease, is an acute, highly contagious viral infection that primarily affects young chickens, causing immunosuppression and mortality. This study aimed to characterize the genetic and pathological features of recent IBD outbreaks in Kashmir, India.
Showkat Shah +2 more
exaly +3 more sources