A Summer without Salmonella

Feed safety is gaining increasing attention across the feed manufacturing industry, with additional focus from the authorities and the public opinion. This has progressed to investigating new approaches and developing effective measures with chemical antimicrobial feed additives.

Confirmed human cases of salmonellosis which are officially reported in the EU are close to 95 000 per year, with many cases left unreported. Salmonellosis outbreaks is increasing and approximately 83% of the outbreaks are due to the consumption of food from animal origin such as eggs and meat. The European Feed Safety Authority (EFSA) outlines a clear link between contaminated animal feed, animal populations and Salmonellosis in humans. This is reported for the most frequently occurring Salmonella serovars such as S.Enteritidis, S.Typhmurium, S.Infantis and S.Derby.

Salmonella Bacteria dark green


Feed processing is a complex operation, and feed manufacturers are continuously seeking ways to improve its efficacy and profitability while ensuring feed safety. Controlling Salmonella at the feed mill is done within 4 key actions.

1.       Preventing Salmonella entering the facility or feed mill

2.       Inhibiting growth within the feed mill environment

3.       Effective kill-off

4.       Preventing recontamination

The raw material supplier assurance and quality control at the reception point needs to be managed to prevent the entry of Salmonella in the feed mill. The steps in the process where dust is created or collected and where condensation occurs, are points to be controlled to prevent the growth or proliferation of Salmonella. Additionally, thermal and chemical treatments are also to be considered when evaluating effective kill-off measures. Chemical treatments are effective in preventing risk to recontamination.

This kill-off effect is based on a few factors of which two of these parameters namely both moisture and heat are added. The risk here is increased risk to condensation. Condensation in a feed mill lends itself to a feed safety risk, with higher chances for Salmonella contamination.  The objective is to produce safe and profitably feed while ensuring product quality.

The options to improve safe feed manufacturing are countless, and it’s noted that advancements made in conditioning techniques and application technologies significantly impacts feed safety and profitability.

Read more about the trends in feed safety preventative approaches from our Kemin feed safety experts.

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