Cha Se-Yeoun, Song Eu-Tteum, Kang Min, Wei Bai, Seo Hye-Suk, Roh Jae-Hee, Yoon Ran-Hee, Moon Oun-Kyoung, Jang Hyung-Kwan
Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Chonbuk, South Korea.
J Vet Med Sci. 2014 Apr;76(4):597-9. doi: 10.1292/jvms.13-0447. Epub 2013 Dec 20.
An investigation was carried out to determine the prevalence and infection pattern of duck circovirus (DuCV) in subclinical Pekin ducks on South Korean duck farms. A total of 147 samples collected from 92 duck farms in five provinces were examined from 2011 to 2012. The overall prevalence of DuCV PCR-positive pooled bursa of Fabricius and liver samples was 21.8% (32/147). The prevalence of DuCV PCR-positive samples increased significantly in 3-week-old ducks compared with that in 1-week-old ducks (P<0.05). DuCV in association with Riemerella and Salmonella infections (10.9%; 16/147) occurred at the same level as infection with DuCV alone (10.9%; 16/147). In comparison of the relationship between bacterial diseases (salmonellosis, Riemerella infection) and morbidity in farms with and without DuCV, morbidity was higher in circovirus-positive farms (50%; 16/32) than in circovirus-negative farms (26.1%; 30/115). Our findings provide baseline information on the degree of DuCV infection and distribution and pattern of DuCV in ducks, and it is evident that DuCV can be associated with subclinical diseases and that subclinical infection could be economically important.
开展了一项调查，以确定韩国鸭场亚临床北京鸭中鸭圆环病毒（DuCV）的流行情况和感染模式。2011年至2012年期间，对从五个省份的92个鸭场采集的147份样本进行了检测。法氏囊和肝脏样本DuCV PCR检测呈阳性的总体流行率为21.8%（32/147）。与1周龄鸭相比，3周龄鸭中DuCV PCR检测呈阳性样本的流行率显著增加（P<0.05）。DuCV与里默氏菌和沙门氏菌感染同时发生的情况（10.9%；16/147）与单独感染DuCV的情况（10.9%；16/147）相同。比较有DuCV和无DuCV的农场中细菌性疾病（沙门氏菌病、里默氏菌感染）与发病率的关系，圆环病毒阳性农场的发病率（50%；16/32）高于圆环病毒阴性农场（26.1%；30/115）。我们的研究结果提供了关于DuCV感染程度、分布及在鸭群中感染模式的基线信息，并且很明显DuCV可与亚临床疾病相关，且亚临床感染可能具有经济重要性。
