Chatkaewchai Benya, Surachetpong Win, Thongyuan Suporn, Kamklang Methanan, Laopiem Sudtisa, Pattanakunanan Sakuna, Boonyawiwat Visanu, Pulpipat Theeraporn
Master of Science Program in Veterinary Clinical Studies, Faculty of Veterinary Medicine, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand.
Department of Veterinary Microbiology and Immunology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok 10900, Thailand.
Transbound Emerg Dis. 2025 Feb 10;2025:6618755. doi: 10.1155/tbed/6618755. eCollection 2025.
Emerging viral diseases, such as tilapia parvovirus (TiPV), are having a significant economic impact on global tilapia aquaculture. TiPV is responsible for the mass mortality of Nile tilapia () and red hybrid tilapia ( spp.) in China, India and Thailand. We, therefore, aimed to determine the current status of TiPV infection and distribution and the risk factors associated with TiPV infection in red hybrid tilapia farms in Thailand. In this cross-sectional study, a total of 101 samples, each comprising five moribund fish, were collected from 40 red hybrid tilapia farms across various provinces in Thailand between September 2022 and March 2024. The data on the farm characteristics and management practices were obtained via questionnaires and direct observation. A total of 23 factors were assessed, including six related to farm characteristics, 13 associated with farm management practices and four concerning the presence of other pathogens. The data from 101 samples were analysed using unconditional and mixed-effects logistic regression, revealing a percentage of TiPV infection was 11.88%. Two significant risk factors associated with TiPV infection were identified: the source of the fish (=0.020) and the initial fish weight at the stocking date (=0.026). Conversely, the feeding method (=0.039) was found to be a protective factor against TiPV infection. This study is the first to investigate the epidemiology of TiPV infection in farmed red hybrid tilapia. Our findings are important for improving farm management practices, mitigating the risk of TiPV infection and developing effective disease control strategies.
新兴病毒性疾病，如罗非鱼细小病毒（TiPV），正在对全球罗非鱼养殖业产生重大经济影响。TiPV是导致中国、印度和泰国尼罗罗非鱼（）和红罗非鱼（ spp.）大规模死亡的原因。因此，我们旨在确定泰国红罗非鱼养殖场中TiPV感染和分布的现状以及与TiPV感染相关的风险因素。在这项横断面研究中，2022年9月至2024年3月期间，从泰国各省份的40个红罗非鱼养殖场共采集了101个样本，每个样本包含五条濒死鱼。通过问卷调查和直接观察获得了养殖场特征和管理实践的数据。共评估了23个因素，包括6个与养殖场特征相关的因素、13个与养殖场管理实践相关的因素以及4个与其他病原体存在情况有关的因素。使用无条件和混合效应逻辑回归分析了101个样本的数据，结果显示TiPV感染率为11.88%。确定了与TiPV感染相关的两个显著风险因素：鱼苗来源（=0.020）和放养时的初始鱼苗体重（=0.026）。相反，发现投喂方式（=0.039）是预防TiPV感染的一个保护因素。本研究首次调查了养殖红罗非鱼中TiPV感染的流行病学。我们的研究结果对于改进养殖场管理实践、降低TiPV感染风险以及制定有效的疾病控制策略具有重要意义。
