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Report no. 619


Søren Kranker Henrik Wachmann
25.09.2003
The effect of Salmonella-reducing ready-mixed feed on the prevalence of Salmonella and on the productivity of finishers

Abstract
The effects of three different diets were studied in two finisher herds. The effects were measured on the prevalence of Salmonella and on productivity.

The trial comprised three groups:

Group 1:

Pelleted feed (wheat-based)

Group 2:

Meal feed (same ingredients as in group 1)

Group 3:

Salmonella-reducing feed (pelleted feed containing among others coarsely ground barley and wheat, 10% sugar beet pellets and 0.6% lactic acid and 0.6% formic acid)

The prevalence of Salmonella was reduced when the Salmonella-reducing feed was used compared with the other two groups. Contrary to other trials, this trial did not find a reducing effect on the prevalence of Salmonella when meal feed was used.

Meal feed reduced the productivity (daily gain and feed conversion) in one of the herds. In the other herd, only daily gain and lean meat percentage were measured, and here no significant differences were found between the three diets.

This trial shows that the prevalence of Salmonella could be reduced by feeding with a Salmonella-reducing pelleted diet without causing a significant reduction in the productivity. Thus, in herds with Salmonella problems, such a diet is an actual alternative to the recommendation of using meal feed or pelleted feed where part of the grain has not been heat-treated and pelleted. However, the Salmonella-reducing feed is more expensive per 100 kg than the wheat-based and pelleted feed.
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