ISSUE FOCUS FEED & ADDITIVE MAGAZINE May 2023 41 In maintaining feed hygiene, checks and balances are also needed. Regular feed hygiene audits will help monitor the progress of company’s objective for food and feed safety. In general, feed hygiene audits will assist the people involved in production to inform them on which areas need urgent cleaning and improvement such as buildup of molds and bacteria at the end of the conditioner machine and re-contamination after pelleting the feed. These audits will also minimize cross-contamination from dirty areas of warehouses to clean depot of finished feeds by using different sets of cleaning tools. Feed hygiene audits can be instrumental in deepening the employees’ understanding in feed safety and an avenue for training on “dos and don’ts” in feed sanitation. Feed hygiene will always be vital in establishing control and improving the operational standards of feed business to manage contamination and traceability. By partnering with a global company like ADM, feed producers can gain confidence that their feed production is safe, clean and efficient. Table 2. Inhibition capacity of an acid blend consisting of formic and propionic acid against Salmonella enteritidis Adapted from R. Stonerock 0.12% acid blend 0.25% acid blend 0.50% acid blend 1.00% acid blend 5.00 x 105 5.00 x 107 >5.00 x 108 >5.00 x 108 Acidifier concentration Inhibition at cfu per ml Figure 1. Adapted from Ricke et al., 2020
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