ISSUE FOCUS 28 FEED & ADDITIVE MAGAZINE August 2022 and wheat byproducts, the percentage of ingredients at higher risk levels for shrimp was 27% and 74%, respectively (Fig 1.) Similarly, an analysis of distillers dried grains tested by Alltech 37+® in the first six months of 2022 reveals the extent of the challenge associated with these ingredients. Each sample had an average of 9.7 mycotoxins, with type B-trichothecenes presenting the greatest risk (Fig 2.). In a dairy system, 70% of the samples analysed would present a higher-risk mycotoxin challenge. The potential challenges are highlighted using Alltech’s PROTECT™ Calculator that assesses the impact on animal health and performance associated with feeding such mycotoxin levels. At an average REQ level of 310 ppb, milk production is predicted to drop by over 0.5 litres per cow per day, with somatic cell count levels being increased. Dr. Miller notes that, in a dairy setting, although a reduction in milk production immediately draws attention, producers must also be aware of the impact on reproduction rates. He also adds that dairy cattle are one of the animal groups most susceptible to lower levels of mycotoxins due to production stresses. The Alltech 37+ analysis also demonstrates the mycotoxin risk to broiler and grow-finish pig producers. The percentage of samples at higher risk is up to 90% in a swine setting, with the potential for reduced performance in herds consuming such contaminated byproducts. HOW CAN FEED AND LIVESTOCK PRODUCERS MITIGATE THE CHALLENGE? Are feed and livestock producers powerless when Figure 1. A comparison of mycotoxin risk in wheat and wheat byproducts used in aquaculture production.
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