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Serological survey of Newcastle disease and infectious Bursal disease in backyard birds in Sudan
Abstract
A serological survey on the prevalence of antibodies against Newcastle disease virus (NDV) using haemagglutination inhibition test and infectious bursal disease virus (IBDV) using the agar gel immunodiffusion (AGID) test, was carried out in non vaccinated birds raised under backyard management system in 14 States of Sudan. A total of 910 serum samples were collected (843 chickens, 45 pigeons and 22 ducks) during 2009 to 2010. The overall seroprevalence of NDV in backyard chickens was found to be 41.8% with mean antibody titre 2.75 log2. The highest prevalence rates (68.9) was recorded in Northern State and the lower (28.9) in Blue Nile State with significant variation (P<0.05). The prevalence of NDV in
other bird species was 23.88% (22.2% of pigeons, (27.3) % of ducks) with no significant variations between species. IBDV antibodies were found in 30.6% backyard chickens, the significantly highest value (31.5) was
observed in South Darfur State and lowest (0) in Red sea State while the tested pigeons and ducks were reacted negative. The findings of the present study indicated that NDV and IBDV were endemic and widely
distributed in backyard areas of Sudan which should be incorporated in the control strategies.
other bird species was 23.88% (22.2% of pigeons, (27.3) % of ducks) with no significant variations between species. IBDV antibodies were found in 30.6% backyard chickens, the significantly highest value (31.5) was
observed in South Darfur State and lowest (0) in Red sea State while the tested pigeons and ducks were reacted negative. The findings of the present study indicated that NDV and IBDV were endemic and widely
distributed in backyard areas of Sudan which should be incorporated in the control strategies.
