Prevalence and genotyping of avian trichomoniasis in urban and exurban areas of San Angelo, Tom Green County, Texas



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Avian trichomoniasis is caused by an infection of the protozoan Trichomonas gallinae, a cosmopolitan parasite of columbiform birds. Infection is characterized by the necrotic ulceration of the mouth, esophagus, crop and proventriculus. These lesions can obstruct the upper respiratory and digestive tracts, frequently resulting in death. The objectives of this study were to determine the prevalence and genetic lineage of avian trichomoniasis in four species of columbiforms in San Angelo, Texas. Samples were cultured and analyzed using InPouch TF diagnostic pouches. A total avian trichomoniasis prevalence of 66% (n=94 total), and evidence of the presence of multiple lineages among collected samples were found in this study. Lineages found in my study were responsible for outbreaks of trichomoniasis that resulted in high mortalities, indicating the possibility for such an epizootic in San Angelo, Tom Green County, Texas.



Columbiformes, Doves, Trichomoniasis, Trichomonas gallinae, Trichomonas