Supplementation of lactobacillus fermented rapeseed meal in broiler diet reduces Campylobacter Jejuni caecal colonisation and limits the L-tryptophan and L-histidine biosynthesis pathways.

The study demonstrated that LFRM inclusion improved growth and decreased caecal Campylobacter spp. concentration and relative abundance of pivotal C. jejuni genes. Performance benefits likely resulted from LFRM metabolites. At the molecular level, LFRM may have reduced C. jejuni colonisation, likely by decreasing abundance of energy transduction and L-histidine and L-tryptophan biosynthesis genes, otherwise required for bacterial survival and increased virulence. This article is protected by copyright. All rights reserved.