天水市规模养鸡场禽白血病流行病学调查

为了解甘肃省天水市鸡禽白血病的流行情况，本文采用实时荧光PCR方法对2020～2021年采集的24个规模鸡场的480份泄殖腔拭子进行了病原学检测。结果显示，24个规模场中阳性场18个，场点阳性率为73.33%；480份样品中阳性样品203份，样品阳性率42.29%。其中不同用途的鸡禽白血病感染率不同，360份蛋鸡样品中阳性138份，阳性率38.33%；120份肉鸡样品中阳性65份，阳性率54.17%。结果表明，禽白血病病毒在天水市规模鸡场存在普遍流行的现象，且肉鸡的感染率高于蛋鸡。

Epidemiological Investigation of Avian Leucosis in Large Scale Chicken Farms in Tianshui City

In order to understand the prevalence of Avian Leucosis in Tianshui City, Gansu Province, this paper used real time fluorescent PCR method to carry out pathogenic detection on 480 cloacal swabs collected from 24 large scale chicken farms from 2020 to 2021. The results showed that 18 of the 24 scale farms were positive, with a positive rate of 73.33%. Among the 480 samples, 203 were positive, and the positive rate of the samples was 42.29%. Among them, the infection rate of Avian Leucosis for different purposes is different. Among the 360 laying hen samples, 138 were positive, and the positive rate was 38.33%. Among the 120 broiler samples, 65 were positive, with a positive rate of 54.17%. The results showed that Avian Leucosis virus was prevalent in large scale chicken farms in Tianshui City, and the infection rate of broiler chickens was higher than that of laying hens.