WINTER BONUS MAGAZINE 2026

Growth and performance ZEA exposure contributes to reduced growth performance, especially when combined with other mycotoxins like DON. Immunological andmetabolic effects ZEA’s oestrogenic activity modulates an immune response, increasing disease susceptibility. Chronic ZEA ingestion has been linked to oxidative stress and metabolic impairment, which worsens resilience. Nutritional solutions: Mycotoxin binders The use of binders is the best solution to minimise the risk of mycotoxins found in feed. It is important to understand that different mycotoxin binders work with different modes of action. These include physical binding of the molecules, chemical interactions, yeast-derived organic bindings, enhancement of gut integrity, and liver stimulus or reducing the bioavailability of the toxins. Some products make use of a singular mode of action, while others may include two or more of these methods mentioned. Additional supportive nutritional strategies Phytogenics may be used to improve the antioxidant capacity, support the liver, and enhance the immune system of pigs exposed to mycotoxins in the feed. These phytogenic feed additives include curcumin, grape pomace, and orange peel extracts. The addition to functional fibers, yeast derivatives, amino acids (glutamine), and organic acids may help to enhance gut integrity and support the GIT. Ingredients such as silymarin and vitamin E support liver function and help mitigate oxidative damage caused by mycotoxins. Physical cleaning of maize Physical cleaning is one of the most effective, non-chemical methods used at feed mills to reduce mycotoxin risk before the maize enters the silos. The process removes fractions of maize with the highest fungal contamination potential, such as dust, fines, broken kernels, and foreign material. Currently, no feed mill in SA uses this method, due to the high capital costs involved. Continuous monitoring and nutritional adjustment By continuously testing and monitoring feed and raw material samples for mycotoxins, nutritionists may adjust the concentration of the mycotoxin binder products included in the diets of the pigs. On-farm solutions While feed manufacturers play an important role in the management of mycotoxins, farmers also have a responsibility. It is important that on-farm storage of feed is closely monitored. Bagged feed should be stored in a clean, cool, well-ventilated, and dry area. The first-in, first- out (FIFO) principle must always be followed in storerooms. Farmers should ensure that bins, hoppers, silos, and feeding troughs are cleaned as per a cleaning schedule. Feeding management is also important. The feeding troughs must be cleaned daily, and no leftover feed should be fed to the animals. Also, ensure the animals have access to unrestricted, clean, cool water. Conclusion DON and ZEA mycotoxins negatively impact pig performance on the farm, and it is important that the levels are continuously monitored. The use of mycotoxin binders can mitigate the risk associated with mycotoxins in the feed, but it is important to consider the mode of action of the products used to ensure maximum cover for a specific production phase. Proper on-farm feed management will lower the chances of mycotoxin occurrence in feed. To learnmore about managing DON and ZEAmycotoxins and protecting your pig’s performance, contact your local De Heus technical advisor – https:// www.deheus.co.za/meet- our-team/. www.deheus.co.za | 031 785 1575 | infosa@deheus.com