Epidemiological surveillance and economic impact analysis of different porcine reproductive and respiratory syndrome virus infection statuses in 23 breeding pig farms in Hubei, China

作者：Huifeng Zhao, Jingwei Zhou, M. Zhang, Xiutao Yang, Zhaofang Xi, Qingxia Gao, Rui Fang, Pengfei Zhao, Junlong Zhao · 发表于：Animal Diseases · 年份：2024 · DOI：10.1186/s44149-024-00152-9 · 被引用次数：10 · 研究领域：Animal Virus Infections Studies、Viral gastroenteritis research and epidemiology、Animal Disease Management and Epidemiology

Abstract Porcine reproductive and respiratory syndrome virus (PRRSV) has emerged as a significant threat to the pig farming industry worldwide, resulting in considerable economic losses. However, few reports detail its economic impact on the pig farming sector. A study was conducted on 23 breeding pig farms in Hubei Province from January 2021 to December 2023, and the PRRSV infection status and associated economic losses were monitored to address this gap. PRRSV antigens and antibodies were identified through enzyme-linked immunosorbent assay (ELISA) and quantitative reverse transcription polymerase chain reaction (qRT-PCR). Additional monthly production data and weaning costs were gathered. The Kruskal-Wallis nonparametric test was used to assess the differences in production efficiency and weaning costs across various PRRSV infection statuses. Dunn’s test was used to compare multiple groups. The parameter distributions of various variables were determined via @RISK (V. 8.5.2) software. Models were developed to evaluate the economic impact of PRRSV infection status on breeding pig farms and assess the losses from a PRRSV outbreak in either provisional PRRSV-negative or PRRSV-positive stable farms. A total of 754 months of monitoring was conducted across 23 breeding pig farms, which included 131 months (17.37%) classified as PRRSV provisional negative, 298 months (39.52%) as PRRSV-positive stable, and 325 months (43.11%) as PRRSV-positive unstable. The production efficiency a...