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Mycotoxin Survey in US & Canada Corn Silage Update: February 2022 Update

Our latest update from the annual PROcheck mycotoxin survey comprising 91 samples of corn silage from the US and Canada is here.

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US & Canada Silage Report

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

  • Ocharatoxin A (OTA)

Summary

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.

USA Corn Silage

  • Overall occurrence for corn silage samples:

Occurrence

2021

2020

Total positive

96%

99%

>1 Mycotoxin/sample

70%

46%

  • Occurrence status by mycotoxin group:

Mycotoxins

2021

2020

A-Trichothecenes

2%

11%

B-Trichothecenes

88%

99%

Fumonisins

26%

23%

Zearalenone

68%

31%

Aflatoxins

0%

0%

Ochratoxin A

0%

0%

  • Of the 50 corn silage samples tested, initial surveillance suggests that mycotoxin occurrence in 2021 corn silage appears to be relatively similar in comparison to 2020 corn silage other than a substantial increase in Zearalenone occurrence (+37% points).

Canadian Corn Silage

  • Overall occurrence for corn silage samples:

Occurrence

2021

2020

Total positive

95%

94%

>1 Mycotoxin/sample

80%

84%

  • Occurrence status by mycotoxin group:

Mycotoxins

2021

2020

A-Trichothecenes

15%

78%

B-Trichothecenes

95%

94%

Fumonisins

46%

51%

Zearalenone

61%

25%

Aflatoxins

0%

0%

Ochratoxin A

0%

1%

  • Of the 41 corn silage samples tested, initial surveillance suggests that mycotoxin occurrence in 2021 corn silage appears to be relatively similar for B-Trichothecenes and Fumonisins, but substantial changes in Zearalenone occurrence (+36% points) and A-Trichothecenes occurrence (-63% points), in comparison to 2020 corn silage.

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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