TRICHOMONIASIS - (Frounce)
Trichomonas gallinae
OCCURRENCE: Occurs in pigeons & doves & raptors that feed on them. Occasionally in turkeys, chickens, & game birds. Outbreaks usually occur in warm weather in warm climates.
EPIZOOTIOLOGY: Pigeons are carriers & contaminate surface water or water containers. Pigeons can transmit trichomonads to their young during feeding. Raptors expose themselves & their young by feeding them infected doves & pigeons.
CLINICAL SIGNS: Pigeons, doves, & raptors have trouble closing their mouth due to oral lesions. Drooling & repeated swallowing movements. Watery eyes with sinus or periorbital lesions & rarly CNS signs. Turkeys have a gaunt appearance with a hollowed area over the crop. Swallowing movements. Bird may have an unpleasant odor.
MORBIDITY & MORTALITY: Varies but can be high.
LESIONS:
Pigeons, doves & raptors: yellow plaques or raised cheesy masses involving the upper digestive tract. Most extensive in mouth, pharynx, esophagus, crop, proventriculus, sinuses. Raptors may also have liver lesions & peritonitis. Turkeys: lesions found only in crop or esophagus.
DIAGNOSIS: Signs & lesions; Finding trichomonads in the oral fluids.
PREVENTION: Good sanitation; Provide clean water; Avoid mixing species; protozoacides
TREATMENT: Dimetridazole, aminonitrothiazole, Enheptin.
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