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Concentrated power against salmonella in piggeries - with hygiene measures and SCHAUMACID S feed acids

Apart from thorough disinfection of pig houses and rigorous pest control, special feed measures constitute the most effective means to prevent salmonellosis and improve pigs’ intestinal health. A recent in vitro study conducted at Tulln University of Applied Sciences in August 2012 has confirmed that SCHAUMACID S successfully minimises salmonella bacteria with both immediate and sustained effect.


Research has identified a correlation between feed structure and levels of salmonella contamination in animals: mealy, coarsely ground feeds in particular yield better results than pellets or granulate. This effect is mainly due to the fact that the fermentation of carbohydrates in the large intestine results in the formation of short-chain fatty acids (propionic, butyric and acetic acids). When feed is supplied in the form of coarsely ground particles, more of these short-chain fatty acids are produced, and this change in the milieu of the intestinal chyme promotes an antimicrobial effect against pathogens, similar to the known mechanism of action of feed acids.


Organic acids


However, the strongest benefits for intestinal health can be obtained from the targeted use of specific organic acids in feed and/or water, particularly as far as gram-negative bacteria such as Salmonella and E. coli are concerned. This approach ensures that hygiene measures start with the feed. Regulating pH levels establishes a barrier against these harmful microbes in the stomach and optimises pepsin availability for protein digestion. SCHAUMACID S is the most effective combination of short and medium-chain acids against both gram-negative and gram-positive bacteria. 


Trial results


A recent in vitro study conducted at Tulln, University of Applied Sciences in August 2012 has confirmed that SCHAUMACID S successfully minimises salmonella bacteria with both immediate and sustained effect (see table). 




 Metered quantity of  SCHAUMACID S, %  bacterial growth, % compared to control (100 %)
 Salmonella  0,28  4,7 
 E. coli  0,14  8,9
 Staphylococcus  0,28  22,0
 Clostridium  0,28  3,0


The minimum inhibitory concentration (MIC) was determined as a parameter for evaluating antibacterial activity. The MIC is the smallest quantity (concentration) of acid additives needed to reduce the growth of harmful bacteria to < 25% at a defined pH level.




The study was conducted under defined conditions. Extensive tests have confirmed not only a decisive effect on gram-negative bacteria, including Salmonella and E. coli, but also a strong inhibitory effect on gram-positive bacteria. The use of SCHAUMACID S at the recommended dosage resulted in an impressive reduction of salmonella growth to a mere 4.7% of the 100% control (see diagram). The targeted selection of acids in this product successfully reduces the rate of salmonella invasion in the intestinal tract and keeps other harmful microbes in animals’ intestines effectively under control.


As the diagram shows, the growth of E. coli, staphylococcus and clostridium bacteria was also extensively inhibited. After adding SCHAUMACID S to feeds, a mere 3% of gram-positive clostridia were found in the test group, compared to the 100% control. The research conducted at Tulln University has confirmed that SCHAUMACID S is the feed acid of choice where harmful microbes are to be effectively minimised. Your expert Schaumann consultant will be happy to advise you on how to develop suitable strategies for effective salmonella minimisation.


Research & Developement

Devision Hygiene

Phone +49 4101 218-3000
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Research results

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