Abstract
Gizzerosine (2-amino-9-(4-imidazolyl)-7-azanonanoic acid) was discovered in fish meal as a causative material of gizzard erosion in chicks. This compound stimulates gastric acid secretion as a histamine H 2-receptor agonist and induces gizzard erosion in chicks. A method of fluorometric determination of this compound was developed employing high-performance liquid chromatography. By this method, 0.2 to 5.0 μg of gizzerosine in fish meals was quantitated with the recovery of 95–102%. Fish meals, which induced severe gizzard erosion in chicks, contained more than 20 mg/kg of gizzerosine. The present method will be useful in preventing gizzard erosion in chicks, which is a big problem in the poultry industry all over the world.
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