Field Efficacy of Potassium Peroxymonosulfate (PMS) Oxidizing Disinfectant (VirusnipTM) against Porcine Circovirus Type 2 (PCV2) in Gilt Acclimatization Unit

Abstract

Virusnip™ is one of the commercial potassium peroxymonosulfate disinfectants widely used in swine farms. This disinfectant is well studied and proves to be excellent in antimicrobial activity previously. However, there is no information about its efficacy under field condition. Thus, the objective of this study was to determine the virucidal activity of Virusnip® against PCV2 in farm condition. Consequently, 1:200 concentration of VirusnipTM was sprayed for 15 minutes once or twice daily depending on the acclimatization period in gilts isolation units compared to the untreated group in the same building. Environmental swabs and oral fluid samples were collected and pooled to determine virucidal effectiveness of PCV2 in the environment as well as virus shedding in the oral secretion of the studied animals. Viral load in each group was quantified by a modified real-time PCR specific for ORF1 of PCV2. Result showed significant reduction in the viral load from the environment contamination and also from the oral fluid samples of the treatment group compared to the control group. This indicates that potassium peroxymonosulfate disinfectant (Virusnip™) can be a disinfectant of choice used for reducing the viral contamination and viral transmission among animals under field situation.