Decreasing deoxynivalenol concentration in maize within the production chain of animal feed

This paper deals with the changes of deoxynivalenol content in chain of production, cleaning, drying, storage and processing of maize. During seven months of storage the content of deoxynivalenol was significantly decreased in comparison to the content of deoxynivalenol detected in the same lots immediately after harvest (D=3.23 mg/kg ; p=0.00012). The content of deoxynivalenol was significantly decreased in the maize extrudate in comparison to the content of deoxynivalenol detected in the same lots immediately after maize harvest (D=4.1 mg/kg ; p=0.000014) and also significantly decreased in the extrudate in comparison to maize whole grains after seven months of storage (D=0.85 mg/kg ; p=0.013). Such a decreasing of deoxynivalenol content can be explained by adequately provided postharvest treatment and extrusion.