African swine fever virus (ASFV) is a very large complex DNA virus that is rapidly spreading through the largest pork producing country in the world, China. ASFV causes high mortality in pigs and is currently a foreign animal disease to North America and most European countries. There is currently no effective vaccine and the virus is known to be transmitted through the oral route via consumption of contaminated feed. ASFV is capable of surviving in feed and feed ingredients subjected to varying environmental conditions simulating transoceanic shipment. The present invention relates to a feed additive that is effective at mitigating ASFV in cell culture and in feed and feed ingredients.