【摘要】 【目的】为了解江西省养禽场的鸡新城疫病毒（NDV）免疫抗体水平状况。【方法】对2020—2022年来自江西省宜春市、上饶市、抚州市、九江市、赣州市5地区的部分养禽场1153份血清样本进行NDV抗体检测。【结果】江西省部分地区养禽场的NDV抗体阳性率91.5%。其中，宜春市、上饶市、九江市、赣州市的新城疫抗体阳性率分别为：94.7%、95.6%、88.5%、71.9%，均好于国家农业农村部规定的70%要求；仅抚州市阳性率69.4%。2020—2022年3年来江西省5市NDV免疫抗体阳性率呈现上升趋势；春、冬两季鸡群抗体阳性率较低；江西省5市各地NDV抗体平均效价均在4 Log2以上，多分布于6 Log2～9 Log2。【结论】近年来江西省家禽NDV免疫抗体水平比较高，而且呈逐步上升趋势。更多还原

【Abstract】 [Objective] This study was conducted to understand the immunological antibody level of Newcastle Disease Virus(NDV) in poultry farms in Jiangxi Province. [Method] The total number of 1 153 serum samples from some poultry farms in Yichun, Shangrao, Fuzhou, Jiujiang and Ganzhou in Jiangxi Province from 2020 to 2022 were tested to analyze the antibody level of NDV. [Result] The results showed that the positive rate of NDV antibody was 91.5%. Among them, the positive rates of Newcastle Disease Virus antibody in Yichun City,Shangrao City, Jiujiang City and Ganzhou were 94.7%, 95.6%, 88.5% and 71.9%, respectively, all exceeding the requirement of 70% stipulated by The Ministry of Agriculture and Rural Affairs. However, the positive rate of NDV antibody in Fuzhou City was only 69.4%. The positive rates of NDV antibody in 5 cities of Jiangxi Province had shown an increasing trend in the past three years from 2020 to 2022. While, the rates were relatively low in chicken flocks in spring and winter. The average titer of NDV antibody in different regions of 5 cities in Jiangxi Province was over 4 Log2, mostly distributed between 6 Log2-9 Log2. [Conclusion] In recent years in Jiangxi Province, there has been a relatively high level of NDV antibody, with a gradual increase year by year.更多还原