Serological detection of Newcastle disease virus in backyard poultry production system in Woliso District South West Shewa, Central Ethiopia.

BACKGROUND

Newcastle disease (ND) is one of the most important respiratory viral diseases. The disease is endemic in many parts of Ethiopia. However, there is no clear record about the introduction of the virus to the country (Ethiopia). Hence, detail about the ND is very important in its (ND) control and prevention. Despite these facts, there is no available research work done on ND in the current research area that would help either as references for researchers or that could help in the control and prevention of the disease. Therefore, the objective of this study was to detect the ND virus (NDV), using serological methods in from December 2018 to November 2019.

METHODOLOGY

A cross-sectional type of study was conducted to detect the NDV. The convenience sampling method was used for sample data collection. Before data collection, chicken with previous history of vaccination against the NDV was excluded from the sampling animals. Then, a total of 348 blood samples of 2 mL were collected from the brachial vein in 3 mL disposable syringes. The serum was collected in labeled 2 mL cryovial tubes. Indirect enzyme-linked immunosorbent assay (ELISA) tests were performed to detect antibodies against NDV and to determine its antibody titer. The test was performed using (ID.vet innovative version 2) procedure.

RESULT

In the indirect ELISA test, 37.64% (131/348) were positive and antibody titer mean value of (1761.9088) was scored. The standard deviation of 2592.42160 and a percentage coefficient of variation of 147% was scored.

CONCLUSION

From the finding, we conclude that indirect ELISA test detected the presence of the NDV in the study area and the heterogeneousity of antibody titer in the study area. Therefore, further molecular characterization and epidemiological investigation should be carried and vaccination of animals is critical in the study area.