infectious bursal disease (ibd) is a highly contagious disease of chickens caused by the infectious bursal disease virus (ibdv). this study was conducted to characterize three ibdv strains from iran. a reverse transcriptase-polymerase chain reaction (rt-pcr) procedure was used to amplify a 715-bp fragment of the vp1 gene from ibdv strains. amplified vp1 fragments of the three iranian ibdv strai...

Infectious bursal disease (IBD) is a highly contagious disease of chickens caused by the infectious bursal disease virus (IBDV). This study was conducted to characterize three IBDV strains from Iran. A reverse transcriptase-polymerase chain reaction (RT-PCR) procedure was used to amplify a 715-bp fragment of the VP1 gene from IBDV strains. Amplified VP1 fragments of the three Iranian IBDV strai...

A novel isolate of infectious bursal disease virus (IBDV) was designated GX-NN-L. The GX-NN-L IBDV was a very virulent infectious bursal disease virus (vvIBDV) isolated from broiler flocks in Guangxi province, China, in 2011. The GX-NN-L IBDV caused high mortality, immunosuppression, low weight gain, and bursal atrophy in commercial broilers. Here, we report the complete genome sequence of the ...

Infectious proventriculitis syndrome is at times a serious and ongoing problem causing significant financial losses. From the obtained results in the present study, it could be concluded that proventriculitis can be transmitted by oral inoculation of homogenates produced from proventriculi of birds with proventriculitis. Experimentally inoculated broilers were seroconverted to ARV, IBV and IBDV...

Antigen Capture-ELISA based on eight different neutralizing mouse monoclonal antibodies (Mabs) was used to study Polish infectious bursal disease viruses (IBDVs) isolated from two epidemics on the turn of 70/80s (early IBDV) and in the 90s (recent IBDV). They were compared to the Faragher 52/70 (F52/70) reference strain of European classical serotype 1 IBDV and to the 89/163 (typical) and 91/16...

in this study, immunohistochemistry was used to clarify the early stages of viral kinetics and cycliccourse of ibdv, ir499, which has been described earlier as a very virulent strain (vvibdv). fifteen, 4-week-old spf chickens were inoculated with 10³ eid50 of vvibdv, ir499, via oculo/nasal route. five birdsserved as controls, and inoculated with phosphate buffered saline (pbs). the birds were t...

Infectious bursal disease (also known as IBD, Gumboro Disease, Infectious Bursitis and Infectious Avian Nephrosis) is a highly contagious disease of young chickens caused by infectious bursal disease virus (IBDV), characterized by immunosuppression and mortality generally at 3 to 6 weeks of age. The disease was first discovered in the USA, near the town of Gumboro, Delaware in 1962. It is econo...

In spite of the intensive and varied vaccination procedures to control Infectious Bursa Disease (IBD), the emergence of a very virulent (vv) IBD pathotype in Ghana has led to high economic losses in the poultry industry. The potencies of two live intermediate IBD vaccine strains (TAD and Nobilis D78) and an intermediate-plus (hot) vaccine strain (228E) used in Ghana were evaluated by challengin...