Nutritional Requirements of Allisonella histaminiformans, a Ruminal Bacterium that Decarboxylates Histidine and Produces Histamine

摘要: Histamine is an inflammatory agent that contributes to bovine laminitis. Cattle fed silage-containing rations often have large populations of Allisonella histaminiformans, but this obligate histidine-decarboxylating bacterium could not be isolated from cattle timothy hay. The growth A. histaminiformans was stimulated by yeast extract, protein hydrolysates, and water-soluble extracts alfalfa or corn silage. Extracts were more potent than Because histamine production Casamino Acids a mixture purified amino acids, it appeared requires peptides. idea peptides consistent with the observation silages amount peptide nitrogen.