Occurrences of Newcastle Disease (ND) in Broiler Chicken at Bheramara Upazila, Kushtia District, Bangladesh

a significant relation (p<0.05) with the occurrence of ND in the susceptible flocks. The proportionate occurrences of ND were estimated as 81.25% in 20-35 days, 47.62% at 10-19 days, and 57.14% at 1-9 days. Moreover, the proportionate occurrences of ND were lower in vaccinated farms (53.48%), whereas all the non-vaccinated farms were infected, and the differences were statistically significant. Similarly, the occurrences were higher (97.44%) in the farms with the provision of wild birds and backyard poultry assessed to 9.52% occurrences in farms without wild birds and native chickens. In the present study, the occurrence of the disease was observed at 20% in moderate and 100% in poor bio-secured farms. Union is identified as the most enzootic area. To sum up, vaccination, biosecurity program, and of wild birds, native chickens, ducks, and crow’s adjunct to farm premises act as an exciting reason for the occurrence of ND in the study area.