ISSUE FOCUS 30 FEED & ADDITIVE MAGAZINE August 2023 vidual treatments W and F. However, it must be considered that many factors influence Salmonella prevalence5, not all of which could be controlled in this field study, and that the comparison relates to different farms and houses. Notwithstanding, this study shows that Selko's feed additive blends, Fysal® Fit-4 and Selko®-pH, are effectively contributing to reducing Salmonella prevalence in flocks. FEED IS A SIGNIFICANT SOURCE FOR SALMONELLA CONTAMINATION Salmonella can enter the production chain through many pathways. However, both pelleted and mashed feed, present a significant risk for contamination. For poultry pelleted feed, a two-element hygiene process typically combines a chemical preservation agent with thermal treatment. In mashed feed production, chemical preservation is the only option to reduce the microbial load. Considering chemical agents, formaldehyde has been shown to be highly effective in reducing Salmonella levels in feeds. However, due to health risks, many countries have banned or restricted the use of formaldehyde, and companies are seeking alternative solutions. Assuring safe feed is not a “one-and-done” challenge and the risk doesn’t end once hygiene/decontamination efforts are deployed during processing. Feed can potentially be re-contaminated along subsequent steps, and even during storage, transportation and delivery to poultry farms. Inclusion of proper types and levels of organic acids in the feed matrix can reduce the risk of recontamination. Selko offers Fysal, a product portfolio containing a potent blend of free and buffered organic acids and their salts, with proven efficacy in reducing Enterobacteriaceae (Figure 1a), and specifically, Salmonella (Figure 1b), in animal feed. CONTROLLING THE SPREAD OF SALMONELLA IN BROILER FLOCKS – SELKO’S 5-STEP APPROACH Minimising the spread of Salmonella can be difficult due to many factors influencing raw materials, complete feed and water. “Carriers” such as rodents, birds, insects, farm workers, visitors, vehicles, etc. can all introduce Salmonella into an environment. Such complexity demands an integrated and tailored approach that considers how feed, farm and health management can protect flocks from Salmonella colonisation and spread. Achieving the legal and commercial standards to safeguard poultry requires minimising the prevalence of Salmonella in each part of the production chain. Early intervention efforts can help optimise stakeholders’ success, protecting producers’ operations and the consumers who purchase poultry products. Selko, the feed additive brand of Nutreco, includes feed, farm, and health management in its approach to minimising Salmonella risk. The customisable programme analyses the most critical risk factors that inFigure 1a. Enterobacteriacea reduction in broiler feed with Fysal® Figure 1b. Salmonella reduction in broiler feed with Fysal®
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