Mainly due to the concern of the spread of multi-resistant bacteria, the use of antibiotic growth promoters in animal feed has been forbidden in the European Union since the beginning of 2006. For more than a decade researchers have been looking for alternatives to replace antimicrobial growth promoters (AGP) in both feed and water. It is well established that organic acids and blends of organic acids show antibacterial activities and that they enhance the digestibility of various feed ingredients.
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