Ciência e Tecnologia Veterinária

Sero-Prevalence and Risk Factors for Infectious Bursal Disease in Local Chicken of Backyard Production System in Selected Districts of Ilubabor Zone, South Western Ethiopia

Abstract

Moti Wakgari

Gumboro is commonly reported from different parts of Ethiopia. However, in local chicken flocks of Ilubabor, there is no known sero-status of the disease. To address this information gap, a cross-sectional study was conducted in local backyard chicken flocks of three districts of Ilubabor Zone where chick mortality and morbidity were a big problem. The objectives of the study were to estimate seroprevalence of IBDV by using Indirect Enzyme Linked-Immune Sorbent Assay and to assess its risk factors. A total of 480 chickens were sampled from randomly clustered 160 flocks and serum samples were processed at Bedelle Regional Veterinary Laboratory Center. Out of 480 serum samples tested, 207 were positive and the overall chicken level seroprevalence of the IBDV antibody in the study area was found to be 43.13% (95% CI: 38.69-47.56) and flock-level seroprevalence was 45.63%(73/160) (95% CI: 37.91-53.34) with almost all test positive flock chickens were seropositive. Multivariable analysis at chicken level showed that the odds of IBDV seroprevalence was significantly high in Metu and Bilo Nopa districts, in purchased chickens, in female chickens, in adult chickens and at flock level in chickens mixed with exotic breeds, in flocks having greater than 5 chickens. This study shows that IBDV is circulating in chicken population of Ilubabor at a high prevalence level. Therefore, further study on serotypes and strains of IBDV identification should be carried out to design suitable control and prevention measures