Molecular detection and genetic characterization of infectious laryngotracheitis virus in poultry in Myanmar
文献类型： 外文期刊
作者： Yang, Zhiyuan 1 ; Murata, Shiro 1 ; Fujisawa, Sotaro 1 ; Takehara, Masaki 1 ; Katakura, Ken 1 ; Hmoon, Myint Myint; 1 ;
作者机构： 1.Hokkaido Univ, Fac Vet Med, Sapporo, Hokkaido, Japan
2.Beijing Acad Agr & Forestry Sci, Inst Anim Husb & Vet Med, Beijing, Peoples R China
3.Univ Vet Sci, Yezin, Nay Pyi Taw, Myanmar
关键词： Infectious laryngotracheitis virus; Molecular detection; Myanmar; Poultry; Phylogeny
期刊名称：BMC VETERINARY RESEARCH （ 影响因子：2.741； 五年影响因子：2.955 ）
ISSN：
年卷期： 2020 年 16 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundAvian infectious laryngotracheitis (ILT) is a highly contagious viral disease that causes severe economic losses to the poultry industry worldwide. In Southeast Asian countries, including Myanmar, poultry farming is a major industry. Although it is known that infectious respiratory pathogens, including infectious laryngotracheitis virus (ILTV), are a major threat to poultry farms, there are no data currently available on the epidemiology of ILTV in Myanmar. Therefore, in this study, we conducted a molecular detection of ILTV in 20 poultry farms in Myanmar.ResultsOf the 57 tested oropharyngeal swabs, 10 were positive for ILTV by polymerase chain reaction of a 647bp region of the thymidine kinase (TK) gene, giving a prevalence of ILTV of 17.5% (10/57). Further sequencing analysis of infected cell protein 4 (ICP4) gene and glycoprotein B, G, and J (gB, gG, and gJ) genes indicated that these isolates were field strains. Phylogenetic analysis revealed that the Myanmar strains clustered together in a single branch and were closely related to other reference strains isolated from Asian countries.ConclusionsThis study demonstrated the presence of ILTV in poultry farms in Myanmar. The genetic characterization analysis performed provides the fundamental data for epidemiological studies that monitor circulating strains of ILTV in Myanmar.
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