ISSUE FOCUS FEED & ADDITIVE MAGAZINE April 2023 57 KEY GLOBAL TRENDS With the above inputs in mind, we saw noteworthy data trends in 2022, including: 1. The "Big Four." Like the previous year, our 2022 analyses data show Deoxynivalenol (DON; Vomitoxin) (81% contamination occurrence), Zearalenone (ZEN) (80%), Fumonisin (FUM) (74%), and Aflatoxin (AFL) (70%) as the top four mycotoxins worldwide. Ochratoxin (OTA) (60%) and T2 toxin (T2) (64%) show the lowest contamination rates, though both increased from 2021 to reach above 60% contamination occurrence in 2022. 2. An increased number of positive analyses were above detection limits*. In 2022, 75% of analyses were positive above detection limits* for the tested mycotoxin. From 2021, positive analyses increased by 3%. The largest prevalence increases include ZEN (+8%), T2 (+7%), and AFL (+6%). 3. Mycotoxin co-occurrence. This year, 92% of the 135,000 raw ingredient samples collected were contaminated with at least one mycotoxin. Of samples tested for three mycotoxins, 85% were positive above detection limits for two or three mycotoxins, and of samples tested for six mycotoxins, 84% were positive for four or more mycotoxins. Based on 2022 data, it's reasonable to assume that raw ingredients are contaminated more often than not: 75% of analyses run in 2022 were contaminated with mycotoxins. But more important is knowing if the contamination is above performance risk thresholds; just 39% of analyses run in 2022 reached these levels. MINIMIZING RISK Success in the battle against mycotoxins is driven by developing informed and targeted plans that quickly identify and anticipate mycotoxin threat levels. Therefore, we advocate a targeted approach to mycotoxin mitigation – a strategy we have successfully implemented for over a decade. The result: Profitable operations that adjust quickly to shifting environmental conditions and changing mycotoxin distributions to better promote healthy and productive animals. TESTING When building a mycotoxin mitigation strategy, it is critical to understand the contamination level within your feed ingredients by combining sampling analysis capabilities with any existing on-farm sampling. We recommend consistent testing to quantify and accurately monitor mycotoxins present in ingredients and the risk level – low, medium, or high – for all six key mycotoxins: Aflatoxin, Fumonisin, Ochratoxin, T2 toxin, Vomitoxin and Zearalenone.
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