Newcastle disease vaccine seroconversion status and gross Pathological lesions in chickens from jimma town On commercial poultry farms

Abstract

Newcastle Disease is the most devastating viral disease that spreads worldwide with a high impact on the economy. This disease is endemic in many parts of Ethiopia. Vaccination against Newcastle disease is one of the main prevention and control measures in countries with an endemic occurrence of Newcastle disease virus. A cross‐sectional study design with purposive sampling methods was conducted to detect the seroconversion status of the Newcastle disease vaccine. Before data collection, chickens with a previous history of vaccination against the NDV were included in the sampling of birds. Blood samples were collected from nineteen (19) farms. The blood sample collections were considered different parameters; sex, age, breed, production stage, hygiene and vaccination history during the data collection time. A total of 394 blood samples of 3ml were collected from the brachial vein using 3ml disposable syringes.