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Mycotoxin Survey in North America: June 2024 Update

Our June 2024 update from the annual PROcheck mycotoxin survey is here. This is the final update for 2023 crop. Monthly updates will resume in the fall once samples from 2024 harvest have been analyzed.

2023 US and Canada Corn Ingredient Survey Reports

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.

USA Corn

  • 254 samples submitted from 20 states
  • Overall occurrence for corn samples:

Occurrence

2023

2022

Total positive

94%

91%

>1 Mycotoxin/sample

78%

69%

  • Occurrence status by mycotoxin group:

Mycotoxins

2023

2022

A-Trichothecenes

20%

3%

B-Trichothecenes

63%

68%

Fumonisins

81%

79%

Zearalenone

73%

32%

Aflatoxins

10%

11%

Ochratoxin A

<1%

1%

  • Based on the 254 corn grain samples tested to date, surveillance of 2023 crop suggests an increase in the occurrence of Fumonisins (+2% points), A-Trichothecenes (+17% points), and Zearalenone (+41% points) while Aflatoxin occurrence remains similar (-1% point) and occurrence of B-Trichothecenes appears to be down (-5% 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.

USA Corn Silage

  • 68 samples submitted from 15 states
  • Overall occurrence for corn silage samples:

Occurrence

2023

2022

Total positive

98%

95%

>1 Mycotoxin/sample

94%

64%

  • Occurrence status by mycotoxin group:

Mycotoxins

2023

2022

A-Trichothecenes

21%

3%

B-Trichothecenes

88%

90%

Fumonisins

13%

28%

Zearalenone

97%

52%

Aflatoxins

6%

0%

Ochratoxin A

6%

1%

  • Based on the 68 corn silage samples tested to date, surveillance of 2023 crop suggests an increase in the occurrence Zearalenone (+45% points) and A-Trichothecenes (+18% points) while B-Trichothecenes occurrence remains similar (-2% points) and occurrence of Fumonisins (-15% points) is down 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.

Canada Corn

  • 29 samples from 2 provinces
  • Overall occurrence for corn samples:

Occurrence

2023

2022

Total positive

100%

82%

>1 Mycotoxin/sample

55%

64%

  • Occurrence status by mycotoxin group:

Mycotoxins

2023

2022

A-Trichothecenes

10%

18%

B-Trichothecenes

100%

82%

Fumonisins

14%

36%

Zearalenone

45%

36%

Aflatoxins

0%

0%

Ochratoxin A

0%

0%

  • 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.

Canada Corn Silage

  • 93 samples from 3 provinces
  • Overall occurrence for corn silage samples:

Occurrence

2023

2022

Total positive

100%

97%

>1 Mycotoxin/sample

63%

59%

  • Occurrence status by mycotoxin group:

Mycotoxins

2023

2022

A-Trichothecenes

5%

14%

B-Trichothecenes

98%

97%

Fumonisins

10%

33%

Zearalenone

59%

45%

Aflatoxins

0%

0%

Ochratoxin A

0%

0%

 
  • Based on the 93 corn silage samples tested to date, surveillance of 2023 crop suggests an increase in the occurrence of B-Trichothecenes (+1% points) and Zearalenone (+14% points) with decreased occurrence of Fumonisins (-23% points) and A-Trichothecenes (-9% points) vs. 2022 crop year results.

Continued monitoring and surveillance of 2023 crop ingredients is warranted to provide on-going characterization of contamination patterns and trends in North America.

Results based on the samples analyzed in the region to date.

Mycotoxin Services & Tools

  • Mycotoxin PROcheck

    A 5-step comprehensive mycotoxin risk management service program designed to counteract the mycotoxins occurring in feed ingredients, and to safeguard the health and performance of your animals.

  • Mycotoxin Detection

    We offer a range of analytical services to customers to assess the mycotoxin contamination of feed materials.

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