26 - Mycotoxin Survey in North America Update: March 2023

Mycotoxin Survey in North America: March 2023 Update

Our March 2023 update from the annual PROcheck mycotoxin survey is here.

2022 US Corn Ingredient Survey Reports

Each sample was tested for 6 major mycotoxin groups of:

A-Trichothecenes (A-Trich): T-2, HT-2, Neosolaniol, Diacetoxyscirpenol
B-Trichothecenes (B-Trich): Deoxynivalenol (DON/Vomitoxin), 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 preliminary trends of each of these feed ingredients regarding mycotoxin prevalence and contamination levels.

Download US Corn Grain Report

USA Corn

283 samples submitted from 28 states
Overall occurrence for corn samples:

Occurrence	2022	2021
Total positive	90%	89%
>1 Mycotoxin/sample	66%	57%

Occurrence status by mycotoxin group:

Mycotoxins	2022	2021
A-Trichothecenes	1%	2%
B-Trichothecenes	67%	69%
Fumonisins	76%	64%
Zearalenone	30%	28%
Aflatoxins	10%	7%
Ochratoxin A	1%	1%

Based on the 283 corn grain samples tested to date, surveillance of 2022 crop suggests an increase in the occurrence of Fumonisins (+13% points), Aflatoxins (+3% points), and Zearalenone (+2% points) while slightly fewer samples have tested positive for B-Trichothecenes (-2% points) vs. 2021 crop.
Additional details including mean contamination levels and risk by state can be found by downloading the full report.