Trichomoniasis (Canker)

Trichomoniasis occurs in pigeon flocks worldwide. It is especially feared as a rearing disease with severe losses.

Trichomonas gallinae is a monocellular, motile flagellate. Nearly all pigeons are carriers of trichomonads, which live in the mucosa of the beak and throat, the gullet and the crop. Infected pigeons excrete the parasites in saliva and faeces. Adult pigeons infect the young when feeding crop milk.

Symptoms of the disease:
In adult pigeons and fledglings, there is a noticable decrease in vitality, reluctance to fly, diarrhoea and a reddening of the throat. As the infection progresses, "yellow buttons" appear on the palatal mucosa, developing into caseous yellow deposits (canker). Do not detach the deposits due to risk of bleeding.
Nestlings develop an umbilical infection and an abscess is formed which can spread to the internal organs. At 10-14 days of age, pungent-smelling liquid droppings and the first signs of retarded growth are observed, with the nestlings constantly squeaking for food.

Recognition of the disease:
Trichomonads are demonstrated microscopically in moist smears from the pharyngeal or crop mucosa of a living or recently killed pigeon. In a cadaver, it is possible to demonstrate the pathogen for up to 20 hours after death.

Similar conditions:
In adult pigeons, white dots appearing towards the back of the throat are not trichomonas foci. These firm, white or yellowish-grey nodules are, in fact, salivary calculi (sialoliths), formed from the hardened secretions of the mucous glands. They are harmless and should not be removed due to risk of bleeding.

When trichomonads are identified, all pigeons in the flock should be treated at the same time with Tricho Dazole 40
If increased drinking water is required (e.g. in the hatching period or hot weather), do not dilute medicated water. Instead, provide fresh water after the medicated water is finished. Do not provide bath water during the treatment period.