2020—2022年我国部分地区鸡传染性喉气管炎流行病学调查  

Epidemiological Investigation on Avian Infectious Laryngotracheitis in Some Regions of China from 2020 to 2022

作　　者：金卫 鄂伟 刘红祥 刘华阳 周建超 张翔 赵成龙 李彬 桑圣云 宋姗姗 刘东 Jin Wei;E Wei;Liu Hongxiang;Liu Huayang;Zhou Jianchao;Zhang Xiang;Zhao Chenglong;Li Bin;Sang Shengyun;Song Shanshan;Liu Dong(Qingdao Yebio Bioengineering Co.,Ltd.,National Key Laboratory of Animal Genetic Engineering Vaccines,Qingdao 266114,Shandong,China;Shandong Feed and Veterinary Drug Quality Inspection Center,Jinan2250100,Shandong,China)

机构地区：[1]青岛易邦生物工程有限公司,动物基因工程疫苗国家重点实验室,山东青岛266114 [2]山东省饲料兽药质量检验中心,山东济南250100

出　　处：《中国动物检疫》2024年第7期1-5,共5页China Animal Health Inspection

基　　金：青岛市科技局资助项目(ZF24-1-8-xdny-7-nsh)。

摘　　要：为了解我国部分地区鸡传染性喉气管炎(ILT)的流行特点,2020-2022年对安徽、北京、福建等29个省级行政区部分养殖场(户)送检的47 210份疑似鸡传染性喉气管炎病毒(ILTV)感染样品进行了PCR检测,并对检测结果进行了空间、时间、群间分布统计分析。结果显示:共检出413份ILTV阳性样品,阳性检出率为0.87%;2020-2022年ILTV阳性检出率分别为1.41%、0.72%和0.56%;每月均有ILTV检出,10月-次年5月阳性检出率较高;大多数省份均有ILTV阳性检出,养鸡密集省份的阳性率较高;4种品种鸡均易感,其中黄羽鸡(1.56%)和蛋鸡(1.11%)阳性率较高;> 3~9以及> 18~24周龄鸡群阳性率较高。结果说明:我国鸡群中ILTV流行范围较广,阳性检出率呈逐年下降趋势,低温季节和小周龄鸡群感染风险相对较高,建议加强鸡群的饲养管理,并持续开展ILT流行病学监测,以期为ILT防控策略调整和研发新型疫苗奠定基础。In order to investigate the epidemiological characteristics of avian infectious laryngotracheitis(ILT)in some regions of China,from 2020 to 2022,47210 samples suspected of being infected with avian infectious laryngotracheitis virus(ILTV)collected from some farms(households)in 29 provinces(municipalities)including Anhui,Beijing,Fujian,etc.,were detected by PCR,based on the results,statistical analysis of spatial,temporal and intergroup distribution was conducted.The results showed that 413 ILTV positive samples were detected,with a positive detection rate of 0.87%;the positive detection rates were 1.41%,0.72%and 0.56%,respectively from 2020 to 2022;ILTV was detected out in samples of every month,especially in the period from October to next May;ILTV positive samples were found in most provinces,with high positive rate in the provinces with intensive chicken production;all the 4 varieties of chickens were susceptible,but the positive rates of yellow-feathered chickens(1.56%)and laying hens(1.11%)were higher,so were the chicken flocks aged>3 to 9 and>18 to 24 weeks.In conclusion,ILTV was widely prevalent in chicken flocks in China,with decreasing positive detection rate year by year.The factors of low temperature season and early weeks of age contributed to a high infection risk of chicken flocks.It was recommended to improve the management of chicken flocks,and continue to conduct ILT epidemiological surveillance,with a view to laying a foundation for the adjustment of ILT prevention and control strategies and for the development of new vaccines.

关 键 词：鸡传染性喉气管炎 流行病学调查 禽病毒性传染病 

分 类 号：S851.3[农业科学—预防兽医学]