Dr Scott Dee and his team at Pipestone Applied Research have been studying the risk of virus movement in feed. Previous research undertaken in the lab showed the survivability of porcine epidemic diarrhea virus (PEDV) in feed as the vehicle for transmission and transport.
The latest study confirms that the findings discovered in the laboratory can be reproduced in real-world conditions. The project confirmed lab results showing soy-based products being supportive of viruses; both organic and inorganic soybean meal were included, and all viruses lived well in each.
Commercial shipping demonstration
The project, funded by the US Swine Health Information Center (SHIC), saw feed spiked with viruses loaded in containers on a truck and driven all around the US.
The trip lasted 21 days, involved 107 hours of transport, and crossed 14 states, covering approximately 6000 miles. From Minneapolis to Iowa to Colorado to Texas, across the southern coast, up the eastern seaboard, and back to the Midwest, the trip exposed the virus-spiked feed to mountainous, western, gulf coast, eastern, and New England environments as well as Midwestern.
Upon the truck’s return to Minnesota, the feed samples were tested.
The team said the study confirmed the ability of viable porcine reproductive and respiratory virus (PRRSV), Senecavirus A (SVA), and PEDV to be transmitted in the soy products. SVA was found in every feed ingredient being evaluated.
Dr Dee noted this reflected what had been seen previously in the lab, that SVA – a surrogate of food-and-mouth disease – survives and is stable in feed ingredients.
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May 12, 2020 at 05:59PM
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US: Commercial shipping demonstration project confirms viral survival in feed - FeedNavigator.com
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