Laboratory Investigation on the Epidemic of Pigeon Newcastle Disease in the Main Urban District of Urumqi City Xinjiang from 2018 to 2023
In order to understand the immunity situation of pigeon free-range farmers and the epidemic situation of Newcastle disease in the breeding environment in the main urban area in recent years,from 2018 to 2023,1 972 samples of pigeon serum,150 samples of pigeon shed environmental cotton swabs and 750 samples of pigeon double cavity cotton swabs were collected from 25 in 4 urban districts of Free-range farmers,the antibody level and nucleic acid of Newcastle disease virus(NDV)were detected by hemagglutination test(HA),hemagglutination inhibition test(HI)and fluorescence quantitative PCR(FQ-PCR).The results showed that the immunization qualification rate of 4 main urban areas in Urumqi was increasing year by year.In 2022,the immune antibody of pigeon Newcastle disease was lower than 70% of the standard set by the Ministry of Agriculture and rural areas,and the others were higher than the standard The positive rates of NDV DNA in environmental cotton swabs from 2018 to 2023 were 28%,20%,16%,28%,36% and 20%,respectively,in 4 urban districts,the positive rates of NDV DNA in pigeon swabs were 12.8%,11.2%,8.8%,8%,9.6% and 4% in 2018-2023.
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