Each sample was tested for 6 major mycotoxin groups including,

• A-Trichothecenes (A-Trich): T-2 toxin, HT-2 toxin, Neosolaniol, Diacetoxyscirpenol
• B-Trichothecenes (B-Trich): Deoxynivalenol (DON/Vomitoxin), 3-Acetyl-deoxynivalenol, 15-Acetyl-deoxynivalenol, Nivalenol, Fusarenon X)
• Fumonisins (FUM): B1, B2, B3
• Zearalenone (ZEN)
• Aflatoxins (Afla): B1, B2, G1, and G2
• Ochratoxin A (OTA)

The survey results represent samples sent in for surveillance testing only and does not include any sample submitted following clinical signs.

Below we discuss trends of each of these feed ingredients regarding mycotoxin occurrence. Additional details including mean contamination levels and risk by state or province can be found by downloading the full report.

• Based on the 237 corn grain samples tested to date, surveillance of 2023 crop suggests an increase in the occurrence of Fumonisins (+2% points), A-Trichothecenes (+16% points), and Zearalenone (+41% points) while Aflatoxin occurrence remains steady (no change) and occurrence of B-Trichothecenes appears to be down (-7% points) vs. 2022 crop year results.
• It is important to keep in mind that as of August 1, 2023, Romer Labs implemented the updated PLUS Method featuring enhanced sensitivity. Changes in laboratory methods including lowered limits of detection (LOD) may influence historical comparisons vs. 2023 survey results.

• Based on the 29 corn grain samples tested to date, surveillance of 2023 crop suggests an increase in the occurrence of B-Trichothecenes (+18% points) and Zearalenone (+9% points) with decreased occurrence of Fumonisins (-22% points) and A-Trichothecenes (-8% points) vs. 2022 crop year results.

• Based on the 88 corn silage samples tested to date, surveillance of 2023 crop suggests an increase in the occurrence of B-Trichothecenes (+3% points) and Zearalenone (+15% points) with decreased occurrence of Fumonisins (-24% points) and A-Trichothecenes (-9% points) vs. 2022 crop year results.