Experimental studies with DON-contaminated grains have been conducted in broilers and layers. Adverse production effects were not observed in broilers and layers ingesting feed contaminated with up to 5 mg DON/kg diet DM for 168 d (Trenholm et al., 1984). Effects on hen egg production, egg weight, feed efficiency, fertility, or chick weights at hatching were not detected in layers ingesting feed containing 18 mg DON/kg diet DM