Author/Authors :
Qureshi, Muhammad Ali Veterinary Research Institute (VRI), Lahore, Pakistan , Ullah, Sami Department of Microbiology - University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan , Zubair Latif, Muhammad Veterinary Research Institute (VRI), Lahore, Pakistan , Sarfaraz, Sadia Veterinary Research Institute (VRI), Lahore, Pakistan , Ahmed, Sohail Department of Clinical Sciences - University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan , Huma, Iffat Veterinary Research Institute (VRI), Lahore, Pakistan , Abbas, Ali Veterinary Research Institute (VRI), Lahore, Pakistan
Abstract :
Newcastle Disease (ND) is one of the most important health problem of commercial and backyard poultry.
It is producing significant economic losses due to fatalities globally. The objective of the study was to carried out serum
base investigation regarding the Newcastle disease Virus (NDV) antibody occurrence in different seasons of a year.
The data were documented has current immune status of unvaccinated backyard poultry. A total of 1468 sera samples
were collected from 32 districts of Punjab, Pakistan. Using Haemagglutination inhibition (HI) test, the serum Ab titer
was measured and maximum seroprevalence (92%) was discovered in the Sargodha district, whereas Mianwali showed
lowest seroprevalence (15.25%). Overall seropositivity (58.78%) was observed between 4log2 and 9log2
antibody titer
and average geometric mean titer (GMT) was 16.59. Furthermore, the presence of serum base antibodies of NDV was
found higher in summer season (64.50% with 21.38 GMT) but decreased in winter season (50% with 15.13 GMT).
In the absence of the vaccine, the results provide a clear evidence of exposure to NDV to backyard poultry. Hence,
systemic sero-surveillance is needed to counter the ever-increasing risk of NDV in backyard poultry
Keywords :
Newcastle disease virus (NDV) , Backyard poultry , Antibody titer Haemagglutination inhibition (HI) test , Punjab , Pakistan
