Feed & Additive Magazine Issue 4 May 2021

ARTICLE 62 FEED & ADDITIVE MAGAZINE May 2021 In addition to testing multiple feed ingredients, feeds for different livestock species also were exam- ined. Layer feed was most commonly tested, followed by feeds for broilers, sows, and piglets. The analyses also included ruminant concentrate, pet food, fish feed, and shrimp feed. When 2019 and 2020 samples were compared by my- cotoxin concentrations, results were lower for AF, FUM, DON, and ZEA in 2020, while 2020 samples had great- er concentrations for T2/HT2 and OTA toxins. 2020 ANALYSIS OF RAW MATERIALS In the 2020 results, each grain examined had a varying percent contamination of different mycotox- ins. The top 3 mycotoxins that were detected in bar- ley were T2/HT2, OTA, and AF, while for sorghum those were OTA, FUM, and ZEA. Triticale was con- taminated with a higher % for FUM and T2/TH2, while oats had most all the mycotoxins occurrences at 79% or above. As expected, FUM, AF, and DON occurred at higher % in corn, while wheat had all mycotoxins except ZEA between 70% and 78%. As anticipated, by-products tended to have higher con- centrations of mycotoxin presence than the whole grain for a commodity. Each protein ingredient also showed a range of myco- toxin contamination, with rapeseed meal having higher contamination for OTA, AF, and T-2/HT-2, while cot- tonseed meal indicated an increased percent of OTA, T2/HT2, and aflatoxin. Soybean meal and sunflower meal are the two most common protein-rich ingredients used worldwide in making animal feeds. Both ingredi- ents had more than 90% contamination for OTA, T-2/ HT-2, and ZEA, while FUM and AF were also at 90% or above contamination for sunflower meal. Peas, unex- pectedly, contained all six mycotoxins at 100%. "To obtain a clear picture of mycotoxin risk to animals, it is advisable to analyze multiple mycotoxins in animal complete feeds rather than ingredients. If complete feed analysis data is not available, all the ingredients that are part of the feed should be analyzed for multiple mycotoxins."