Results 211 to 220 of about 31,197 (250)

Comparison of vaccines against infectious bursal disease

Journal of Comparative Pathology, 1975
Abstract A comparative study was undertaken of 9 products from 7 different sources intended for use as vaccines against infectious bursal disease of chickens (IBD). A range of properties was found in laboratory tests for safety, efficacy and immunosuppressive effect.
M. Pattison, Denise H. Thornton
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Immunogenicity of Infectious Bursal Disease Viruses in Chickens

Avian Diseases, 1991
Cross-protective properties of infectious bursal disease viruses (IBDVs) were studied. Viruses represented different subtypes of serotype 1, including recently isolated viruses (variants), and a serotype 2 virus. Chickens were vaccinated at 3 weeks of age with inactivated vaccines containing 10(5), 10(6), 10(7), or 10(8) mean tissue-culture infectious ...
Y M Saif, N. M. Ismail
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Identification of the Infectious Bursal Disease Virus in Mexico

Avian Diseases, 1972
An isolate (69-729) was obtained from birds showing clinical signs and lesions of infectious bursal disease (IBD). When inoculated into susceptible embryos it produced lesions characteristic of those produced by infectious bursal disease virus (IBDV). Its chloroform resistance, size, and cross-neutralization suggest that isolate 69-729 is an IBDV and ...
A. Antillón, Pomposo Fernandez, Benjamin Lucio   +2 more
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Infectious bursal disease in the Sudan [PDF]

Tropical Animal Health and Production, 1983
M. Ginawi, M. A. Shuaib, T. H. Suleiman, A. Salman   +3 more
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Acute infectious bursal disease in poultry: A review

Avian Pathology, 2000
This review is focused on the acute form of infectious bursal disease (IBD) caused by very virulent IBD virus (vvIBDV). First described in Europe about 10 years ago, this new form of the disease has rapidly spread all over the world, causing dramatic losses; after a decade, it still represents a considerable threat to the poultry industry. Emergence of
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Infection and activation of bursal macrophages by virulent infectious bursal disease virus

Virus Research, 2005
In this study the effect of infectious bursal disease virus (IBDV) on bursal macrophages during the acute phase of the infection was examined. Specific-pathogen-free (SPF) chickens were exposed to virulent IBDV and bursal adherent cells were examined by immunohistochemisrty and RT-PCR for virus infection and by real-time quantitative RT-PCR (qRT-PCR ...
Ra Mi Cha, Joseph M. Palmquist, Jagdev M. Sharma, Mahesh Khatri   +3 more
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Effect of Bursal Cell Number on the Pathogenesis of Infectious Bursal Disease in Chickens

Avian Diseases, 1987
The pathogenesis of infectious bursal disease (IBD) in chickens neonatally chemically bursectomized (CB) by cyclophosphamide and subsequently inoculated with various numbers of bursal cells was examined. CB chickens inoculated with at least 62.5 X 10(6) bursal cells were as susceptible to IBD clinical manifestations (as determined by gross and ...
Ismail Nm, Fadly Am, Chang Ts
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Infectious Bursal Disease and Spirochetosis in Pullet Chicks

Avian Diseases, 1987
Infectious bursal disease and spirochetosis were diagnosed simultaneously in a flock of 100 six-week-old babcock pullet chicks. Larvae of the fowl tick Argas persicus were found on the bodies of the chicks. Thirty-nine of the chicks died 5 days after the onset of clinical signs.
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Molecular Detection and Differentiation of Infectious Bursal Disease Virus

Avian Diseases, 2007
Vaccination of hens, with the subsequent maternal immunity imparted to chicks, is the primary means of controlling infectious bursal disease virus (IBDV). Effective vaccination depends on rapid and accurate diagnosis of the subtype present in a flock because vaccines based on the classic subtype of IBDV can fail to protect against challenge with a ...
Tsang Long Lin, Ching Ching Wu, A Peter Rubinelli   +2 more
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Molecular Characterization of Iranian Infectious Bursal Disease Viruses

Avian Diseases, 2008
This study was conducted to characterize nine infectious bursal disease virus (IBDV) isolates from Iran. A reverse transcriptase-polymerase chain reaction (RT-PCR) procedure was used to amplify a 743-bp fragment of the VP2 gene hypervariable region from IBDV field isolates.
Jamshid Razmyar, Seyed Mostafa Peighambari   +1 more
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