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Vitamin


September 17, 2019


BIOMIN releases September update of mycotoxin survey for US corn
 

 

 

BIOMIN has released its September update from the annual Biomin PROcheck mycotoxin survey in corn harvested which includes 725 samples from 32 US states.


Of the sample pool, 67% are corn samples (487 samples), 21% are corn silage (153 samples), and 12% are corn by-product (85). Of the total sample pool, 97% tested positive for at least one mycotoxin versus 91% in 2017, while 74% of samples had more than one mycotoxin compared to 47% in 2017. The following concerns trends of each of these feed ingredients regarding mycotoxin prevalence and contamination levels.


Corn


- 99% of ground corn samples are positive for at least one mycotoxin, vs 89% in 2017.

 

- 74% of samples have more than one mycotoxin versus 47% in 2017.

 

- Aflatoxin prevalence in dry corn increased to 9% versus 4% in 2017, with average contamination levels increasing over seven fold.

 

- Deoxynivalenol (vomitoxin) prevalence rose to 78% versus 70% in 2017, with average contamination level increasing by 42%.

 

-Fumonisin prevalence jumped to 78% versus 52% in 2017, with average contamination levels increasing by 30%.

 

- Zearalenone prevalence increased to 46% versus 25% in 2017, with average contamination levels remaining steady.

 

Corn by-product

 

- 94% of samples are positive for at least one mycotoxin versus 100% in 2017.

 

- 88% of samples have more than one mycotoxin versus 94% in 2017.

 

- Aflatoxin prevalence decreased to 2% versus 9% in 2017, both years with similar and low contamination levels.

 

- Deoxynivalenol (vomitoxin) prevalence decreased slightly to 93% versus 99% in 2017, with average contamination level doubling.

 

- Fumonisin prevalence is 85% versus 91% in 2017, with average contamination levels remaining steady.

 

- Zearalenone prevalence is 84% versus 80% in 2017, with average contamination level increasing over seven fold.

 
Corn silage
 

- 93% of samples are positive for at least one mycotoxin versus 91% in 2017.
 

- 66% of samples have more than one mycotoxin versus 30% in 2017, a drastic increase in co-contamination.
 

- Aflatoxin prevalence is 1% with low average contamination levels.
 

- Deoxynivalenol (vomitoxin) prevalence has increased slightly to 92% vs. 85% in 2017, with average contamination level more than doubling.
 

- Fumonisin prevalence increased to 25% versus 12% in 2017, with average contamination levels remaining steady.
 

- Zearalenone prevalence jumped to 60% versus 26% in 2017, with average contamination level more than doubling.
 

These contamination levels present medium to high risk for all livestock and poultry species depending on toxin and feed ingredient type.

 

Overall, producers in the US Midwest should be on the lookout for the impacts from deoxynivalenol and zearalenone, while Southern states should be vigilant regarding fumonisin and aflatoxin contamination, BIOMIN concluded.

 

- BIOMIN

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