EPIDEMIOLOGICAL, SEROLOGICAL, CLINICAL AND RISK FACTORS OF INFECTIOUS BURSAL DISEASE (IBD), IN BROILERS FLOCKS IN ALGERIA

Abstract

The present study was conducted to epidemiological, serological and clinical of Infectious Bursal Disease (IBD) on Algerian broiler chicken (45 flocks/1350 sera) using indirect Enzyme-Linked Immuno-Sorbent Assay (ELISA) method and to assess the influence of some risk factors related to this disease. Among all investigated flocks, IBD was the most seroprevalent disease (73.33%). The results show the effect of risk factors, the antibody titers were elevated in the herd recorded a high mortality (more than 10%) compared with those recorded a low mortality (less than 10%) (p = 0.009). However, more than flocks 30 days old flocks were less seropositive those less aged of 30 days (p = 0.002). Therefore, the antibody titers were elevated in herds with bad hygiene compared with good hygiene (p = 0.04) At last, when broiler chicken were not boosted by IBD vaccine, flocks appeared to be more seropositivity (p = 0.03). This study determined that IBD is a dominant viral disease in broilers. Many factors are responsible for the development of this disease.