Seroprevalence of Newcastle Disease in Backyard Chickens at Gazipur District, Bangladesh

Abstract

A cross-sectional study was conducted to find out seroprevalence of Newcastle disease ( locally known as 'Ranikhet') in local scavenging chickens with no history of vaccination and no clinical signs of disease as well as raised under a traditional management system at four upazilas (Sreepur, Kapasia, Kaliakor and Gazipur sadar) of Gazipur district. Two hundreds (200) serum samples (50 samples from each upazila) were collected during the period the date from 16/10/2009 to 20/02/2010. Haemagglutination inhibition (HI) test was used to detect of antibodies against Newcastle disease virus. The mean log2 HI titer to NDV in blood sera of the study population were found 5.54, 6.25, 4.38, 5.32 and seroprevalence were 42.53%, 45.99%, 31.91% and 37.82% in Sreepur, Kapasia, Kaliakor and Gazipur sadar upazila of Gazipur district respectively. The overall antibody titer and seroprevalence of Newcastle disease virus were recorded 5.37 and 39.56% respectively. Further detailed study focusing on Newcastle Disease (ND) virus strain identification and practice of improved management packages are recommended