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Pregled bibliografske jedinice broj: 236851

Highly Virulent Infectious Bursal Disease in Broilers with No or Low Mortality but with Reduced Body Masses and Immunosuppression


Savić, Vladimir; Ragland, L. William; Novak, Renata; Ester, Katja
Highly Virulent Infectious Bursal Disease in Broilers with No or Low Mortality but with Reduced Body Masses and Immunosuppression // Acta Microbiologica et Immunologica Hungarica, Vol.52, 2005, Supplement / Marialigeti, K. ; Sipos, R. (ur.).
Budimpešta: Akadémiai Kiadó, 2005. str. 137-138 (predavanje, međunarodna recenzija, sažetak, znanstveni)


CROSBI ID: 236851 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Highly Virulent Infectious Bursal Disease in Broilers with No or Low Mortality but with Reduced Body Masses and Immunosuppression

Autori
Savić, Vladimir ; Ragland, L. William ; Novak, Renata ; Ester, Katja

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Acta Microbiologica et Immunologica Hungarica, Vol.52, 2005, Supplement / Marialigeti, K. ; Sipos, R. - Budimpešta : Akadémiai Kiadó, 2005, 137-138

Skup
1^st Central European Forum for Microbiology (CEFORM)

Mjesto i datum
Budimpešta, Mađarska, 26.10.2005. - 28.10.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
highly virulent IBD; broilers; reduced body mass; immunosuppression; vaccination

Sažetak
Highly virulent infectious bursal disease (IBD) viruses, in contrast to classical and variant IBD viruses, cause usually 10% mortality of susceptible broiler chickens but sometimes it may reach 25%. An outbreak of IBD in vaccinated broiler chickens in Croatia is generally described with no increased mortality but significantlyreduced body weight gain. Experimental infection of fully susceptible 30-day-old birds with IBD virus isolated from affected chickens resulted in no mortality and mild clinical signs, but body weight gains were significantly reduced (52.9 grams and 83.6 grams per day in susceptible and immune birds, respectively) during the two weeks following contact infection. Rapid seroconversion was noted in unvaccinated birds. Induced transcription of inteferon alpha and gamma of susceptible broilers was significantly reduced on the 7^th and 14^th day after exposure to the isolated virus, whereas induction in broilers vaccinated against IBDV was not reduced. Infection of 4-week-old Leghorn type SPF chickens with the virus resulted in severe disease with 60% mortality, which implicated that the isolated IBD virus was highly virulent although it did not cause high mortality of susceptible broiler chickens. Nucleotide sequencing of the hypervariable region of the VP2 gene confirmed thet the virus was genetically similar to highly virulent IBD viruses.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina



POVEZANOST RADA


Projekti:
0098102

Ustanove:
Institut "Ruđer Bošković", Zagreb


Citiraj ovu publikaciju:

Savić, Vladimir; Ragland, L. William; Novak, Renata; Ester, Katja
Highly Virulent Infectious Bursal Disease in Broilers with No or Low Mortality but with Reduced Body Masses and Immunosuppression // Acta Microbiologica et Immunologica Hungarica, Vol.52, 2005, Supplement / Marialigeti, K. ; Sipos, R. (ur.).
Budimpešta: Akadémiai Kiadó, 2005. str. 137-138 (predavanje, međunarodna recenzija, sažetak, znanstveni)
Savić, V., Ragland, L., Novak, R. & Ester, K. (2005) Highly Virulent Infectious Bursal Disease in Broilers with No or Low Mortality but with Reduced Body Masses and Immunosuppression. U: Marialigeti, K. & Sipos, R. (ur.)Acta Microbiologica et Immunologica Hungarica, Vol.52, 2005, Supplement.
@article{article, author = {Savi\'{c}, Vladimir and Ragland, L. William and Novak, Renata and Ester, Katja}, year = {2005}, pages = {137-138}, keywords = {highly virulent IBD, broilers, reduced body mass, immunosuppression, vaccination}, title = {Highly Virulent Infectious Bursal Disease in Broilers with No or Low Mortality but with Reduced Body Masses and Immunosuppression}, keyword = {highly virulent IBD, broilers, reduced body mass, immunosuppression, vaccination}, publisher = {Akad\'{e}miai Kiad\'{o}}, publisherplace = {Budimpe\v{s}ta, Ma\djarska} }
@article{article, author = {Savi\'{c}, Vladimir and Ragland, L. William and Novak, Renata and Ester, Katja}, year = {2005}, pages = {137-138}, keywords = {highly virulent IBD, broilers, reduced body mass, immunosuppression, vaccination}, title = {Highly Virulent Infectious Bursal Disease in Broilers with No or Low Mortality but with Reduced Body Masses and Immunosuppression}, keyword = {highly virulent IBD, broilers, reduced body mass, immunosuppression, vaccination}, publisher = {Akad\'{e}miai Kiad\'{o}}, publisherplace = {Budimpe\v{s}ta, Ma\djarska} }




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