Experimental infection of Newcastle disease virus in pigeons (Columba livia): Humoral antibody response, contact transmission and viral genome shedding
- 作者：Adriano de Oliveira Torres Carrasco ; Meire Christina Seki ; Tâ ; nia de Freitas Raso ; Antô ; nio Carlos Paulillo ; Aramis Augusto Pinto
- 关键词：Newcastle disease virus ; Pigeons ; Columba livia ; Experimental infection ; RT-PCR
- 刊名：Veterinary Microbiology
- 出版年：2008
- 期刊代码：106_03781135
- 类别：abs
- 出版时间：25 May 2008
- 卷：129
- 期：1-2
- 页码：89-96
- 文件大小：189 K
摘要
The aim of this study was to evaluate the humoral antibody response, the genome viral excretion and the contact transmission of pathogenic chicken origin Newcastle disease virus (NDV) from experimentally infected pigeons (Columba livia) to in-contact pigeon. The antibody response to infection was assessed by the hemagglutination inhibition (HI) test and the genome viral excretion was detected by RT-PCR. Viral strain induced high antibody levels, both in inoculated and in sentinel birds. The pathogenic viral strain for chickens was unable to produce clinical signs of the disease in experimentally infected pigeons, although it induced the humoral antibody response and produced NDV genome shedding. NDV genome was detected intermittently throughout the experimental period, from 5 days post-infection (dpi) to 24 dpi. Therefore, viral genome shedding occurred for 20 days. The viral genome was detected in all birds, between 11 and 13 dpi. Furthermore, the high infectivity of the virus was confirmed, as all non-inoculated sentinel pigeons showed antibody levels as high as those of inoculated birds.