Histopathological survey of trichomoniasis lesions in the infected turkey and pigeons in Zabol district
Subject Areas : Journal of Comparative Pathobiology
Samiee, A., Shariati, F., Nabavi, R., Davari, S.A.
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Keywords: Trichomoniasis, Prevalence, Histopathology, Pigeon, Turkey,
Abstract :
The present study was conducted to determine the prevalence and histopathological lesions comparison of trichomoniasis in the pigeons and turkeys. During this research (from March to August 2014) for detection of Trichomonas gallinae, a total of 300 wet swab samples were collected from pigeon’s and turkey’s crops. Of the 150 pigeons, 72.7% (n =109) and 150 turkeys, 0.7% (n =1) were infected with T. gallinae. Chi-square test showed a significant difference in the prevalence of the disease in turkeys and pigeons (P <0.001). At necropsy in 6 infected pigeons (5.5%) caseous necrosis and grayish–yellow diphtheritic membranes were characterized in the mouth, esophagus, crop and proventriculus. In the infected turkey, pendulous crop and stench mouth were macroscopically noticeable. The disease in pigeons was more prominent and contained severe macroscopic and microscopic lesions in the oral cavity, esophagus, crop, gizzard and liver but in the turkey microscopic lesions were confined in the esophagus, crop and liver. Histopathologically, oval eosinophilic structures with basophilic nuclei, recognized as trichomonads, were pathognomonic in the liver of infected turkey. Gross and histopathological study revealed a lower prevalence and milder lesions of trichomoniasis comparatively in turkeys than in the pigeons. It was also noted that the prevalence of the contamination in pigeons of Sistan region is more significant than many parts of Iran.
