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"Masked Mycotoxins": What Do We Know?

I have had the opportunity to write several blogs on the topic of mycotoxins for World Poultry. So, why am I writing about mycotoxins again? You might have heard about “masked mycotoxins”. This topic has generated a lot of interest over the past few years (1).

Masked mycotoxins are soluble conjugate form of mycotoxins. These conjugates can be produced as a result of different processes. For example, plants including cereals are able, as a protective mechanism, to metabolize mycotoxins into more polar metabolites (1). Deoxynivalenol -3-glucoside (DON3G) is a conjugate form of deoxynivalenol (DON) found in wheat and corn (2, 3).
Feeding of mycotoxin contaminated ingredients (e.g. corn, wheat) to poultry can result in exposure of these animals to both parent mycotoxins and their conjugate metabolites formed in feed ingredients (2). Masked mycotoxins can escape routine laboratory detection methods. However, they can be released as free mycotoxins in the intestine and contribute to the total amount of mycotoxins ingested by poultry (2, 3).
In spite of all progresses, more information is still required regarding masked mycotoxins especially with respect to laboratory detection of these compounds in feed ingredients and finished feed samples (1). In addition to technical limitations in analytical procedures, there is also not much information available on toxicity of masked mycotoxins (1). 
  1. Were you aware of presence of masked mycotoxins in feed ingredients?
  2. Can masked mycotoxins exacerbate problems associated with mycotoxins in the poultry industry?
  3. What do you expect commercial companies to do in this regard?


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    dr syed haider usman

    1]Is mask mycotoxins having the same symtomes and lesions as compare to mycotoxin 2]is there any beneficial effect or impact on birds health 3]is it a area specific or found all the areas where there is a possibililty of mycotoxin

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    Gerard Western

    It is all very well telling us about mycotoxins but who how and where are they going to be dealt with from a farmers point of view Not to mention pay for it. Great finding issues but scientist should help find cost effective solutions as well.

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    Dr. Elijah Kiarie

    This is very interesting, is there a chance that this kind of trasformation occurs during ethanol fermentation and as such we have the wrong assays for DON in DDGS?. It appears the conjugation is via easily digestible glucose bond meaning the toxin will be bolsted to live once ingested by chicken and pigs. A further question, I have always wondered is whether there is an interaction between DON and grains in swine? for example some of our data shows pigs can handle much higher DON in barley but these levels in wheat or corn have been found to be intolerable

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