Preliminary tests indicate that a shipment of feed to the Beutler & Son ranch contained monensin, an additive used in the beef and dairy industries, according to a report by KOCO News of Oklahoma City.
The substance is toxic to horses.
In a statement on socialist media, the manufacturer confirmed that it was an isolated case, likely due to a faulty cleanout procedure and sensor malfunction.
The remarks suggest that the feed came from a batch plant, where the same equipment is used for multiple products.
Western Horse Watchers Association 