ISSUE FOCUS FEED & ADDITIVE MAGAZINE March 2026 39 RESULTS: VIRAL RNA IN FEED AND SALIVA Similarly to what was observed at the pig level, no viral RNA was detected 15 days post-infection (dpi) for any of the viruses tested in the MCFA-supplemented group, whereas RNA particles were detected in all the control samples at feeder or saliva level. Interestingly, at 6 dpi, some viral RNA could also be identified in the MCFA-supplemented group, although this was not finally associated with morbidity or symptoms in the animals. This can be explained by the fact that, in this study, we did not check for the complete viral particles, but rather for RNA using PCR. The target of the MCFA action was the phospholipid envelope of the virus and not the nucleic acids. With a half-life of minutes to hours for RNA and ice-block contaminations at d0 and d6, it is not surprising to still detect those nucleic acids in samples taken at 6 dpi, even when the virus envelopes have been destroyed. The use of FeedLock as a natural and globally available technology to mitigate the risks of virus in feed provides one of the most efficient solutions to enhance the biosecurity of swine farms by increasing feed safety in the operations. On top of this strong mitigation effect, farm owners will receive the same strong payback in performance, compared to other MCFA-based additives, making this feed biosecurity measure an insurance with payback in performance. By keeping farmers in control of their operations, FeedLock ensures their peace of mind for biosecurity without impacting their wallet. Supplant D Closing the biosecurity gap • Mitigates pathogenic feed contamination • Increases feed safety • Sustainable protection • Enhances performance agrimprove.com FeedLock® Photo: Thammachak Sotiya | Shutterstock
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