[Hexamitiasis in carrier pigeons in the Netherlands]

Hexamitiasis in carrier pigeons caused by Hexamita columbae was reported for the first time in the Netherlands. Infections tend to occur from April to July in 6-8 week old birds. The patients were affected with diarrhoea, became emaciated and died. Mortality may be considerable. Parasites may be identified in unstained wet specimens of very fresh droppings. Treatment consists in administration of ronidazole during a period from seven to ten days. Optimum hygiene should be observed.