Bir Yarış Güvercini (Columba livia domestica) Sürüsünde Aspergillus fumigatus Salgınının Araştırılması

Year 2023, Volume: 20 Issue: 2, 134 - 140, 01.08.2023

Emrah İpek Erkmen Tuğrul Epikmen Recai Tunca

https://doi.org/10.32707/ercivet.1332558

Abstract

Bu çalışmada yarış güvercinlerinde (Columba livia domestica) Aspergillus fumigatus’un neden olduğu sistemik aspergillozis salgınının klinik seyri, patolojik bulguları ve muhtemel risk faktörleri araştırıldı. Yüzyirmi adet yarış güverci- ni bulunan sürüde yoğun egzersiz periyodu ile ilişkili hastalık salgını rapor edildi. Hastalığın ortaya çıkışı yoğun egzer- siz programı ve hava sıcaklıklarının yüksek seviyelerde seyretmesi ile ilişkiliydi. Etkilenen kanatlılarda halsizlik, çabuk yorulma, depresif durum, ayağa kalkamama, hızlı gelişen zayıflama, inkoordinasyon, çırpınma gibi belirtiler ve ölüm görüldü. Nekropside akciğer, hava keseleri ve viseral peritoneumun yüzeyinde değişen büyüklüklerde, nodüller veya plak benzeri lezyonlar dikkati çekti. Histopatolojik olarak parenkimatöz organları etkileyen ve bu organların çevresindeki dokulara invazyon gösteren fungal heterofilik granülomlar belirlendi. Santral sinir sisteminde fungal yapılar ile ilişkili malasik lezyonlar görüldü. Histopatolojik ve sitolojik bulgular A. fumigatus’a ilişkin karakteristik bulguları ortaya koydu. Hastalığın çıkış döneminde hava sıcaklıklarının mevsim normallerinin üstünde seyretmesi ve bu tarihlerde yarışlara hazırlık için güvercinlere yoğun egzersiz yaptırıldığı göz önüne alındığında A. fumigatus’un güvercinlerde kolonize olarak yayılmasında bu faktörlerin olası rolü olduğu düşünüldü.

Keywords

Aspergillozis, egzersiz, patoloji, predispozan faktörler, yarış güvercini

Investigating an Outbreak of Aspergillus fumigatus Infection in a Racing Pigeon (Columba livia domestica) Flock

Abstract

In this study, the clinical course, pathological findings, and potential risk factors of a systemic aspergillosis outbreak caused by Aspergillus fumigatus in racing pigeons (Columba livia domestica) were investigated. The disease was reported during the period of intense exercise in a 120 head racing pigeon flock. The exercise period coincided with the high environmental temperatures. Affected birds displayed symptoms, such as weakness, fatigue, depression, inability to stand, rapidly developing weakness, incoordination, convulsions, and death. Necropsy revealed varying sized, prominent nodular or plaque-like lesions on the lungs, air sacs, and visceral peritoneum. Single or multiple case- onecrotic fungal granulomas invading the existing and/or adjacent tissues were seen histopathologically. Malacic le- sions associated with fungal elements were observed in the central nervous system. Histopathologic and cytological findings revealed the presence of characteristic A. fumigatus elements and lesions. Considering the fact that the envi- ronmental temperatures were above the seasonal norms during the emergence of the disease as well as subjugation of pigeons to intense exercise for race preparations, A. fumigatus colonization and its spread in racing pigeons was seen likely due to the combined effects of these risk factors.

Keywords

Aspergillosis, exercise, pathology, predisposing factors, racing pigeon

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