BIOMIN Mycotoxin Survey in US & Canada Corn Silage Update: February 2022 Update
Our latest update from the annual Biomin® PROcheck mycotoxin survey comprising 91 samples of corn silage from the US and Canada is here.
01.02.2022US & 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.