Determining the impact of commercial feed additives as potential porcine epidemic diarrhea virus mitigation strategies as determined by polymerase chain reaction analysis and bioassay()

Gebhardt, Jordan T; Woodworth, Jason C; Jones, Cassandra K; Tokach, Mike D; Gauger, Philip C; Main, Rodger G; Zhang, Jianqiang; Chen, Qi; DeRouchey, Joel M; Goodband, Robert D; Stark, Charles R; Bergstrom, Jon R; Bai, Jianfa; Dritz, Steve S

The survival and inversely degradation and/ or loss of quantification ability is dependent upon the feed matrix in which the viral particles are inoculated (Dee et al., 2015; Cochrane et al., 2016b) . Dee et al. (2015) observed that soybean meal harbored viable PEDV virus at 180 d postinoculation, whereas complete feed harbored viable virus for 45 d postinoculation. In the current study, the detectible quantity of virus maintains a higher level in SDPP compared to complete swine diet. The exact mechanism by which virus viability is affected by feed matrix is not fully understood. The interaction between viral particles and feed matrix is complex and is worthy of additional investigation.