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Sporadic isolation of Tetratrichomonas species from the cattle urogenital tract

Lookup NU author(s): Dr Nick Bailey, Professor Robert HirtORCiD



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Tritrichomonas foetus is a venereal trichomonad parasite which causes reproductive issues in cattle. No other trichomonads are known to be urogenital pathogens in cattle, but there are several reports of Tetratrichomonas and Pentatrichomonas isolates of unclear origin from the cattle urogenital tract in the Americas. This work reports the first case of a non-Tritrichomonas foetus cattle urogenital trichomonad isolate in Europe. Molecular analysis of the internal transcribed spacer 1-5.8S ribosomal RNA-internal transcribed spacer 2 and 18S ribosomal RNA loci suggest that the isolate is a Tetratrichomonas species from a lineage containing other previously described bull preputial isolates. We identified close sequence similarity between published urogenital and gastrointestinal Tetratrichomonas spp., and this is reviewed alongside further evidence regarding the gastrointestinal origin of non-Tritrichomonas foetus isolates. Routine screening for Tritrichomonas foetus is based on culture and identification by microscopy, and so considering other trichomonad parasites of the bovine urogenital tract is important to avoid misdiagnosis.

Publication metadata

Author(s): Bailey NP, Velo-Rego E, Hirt RP

Publication type: Article

Publication status: Published

Journal: Parasitology

Year: 2021

Volume: 148

Issue: 11

Pages: 1339-1344

Print publication date: 01/09/2021

Online publication date: 03/06/2021

Acceptance date: 24/05/2021

Date deposited: 31/08/2021

ISSN (print): 0031-1820

ISSN (electronic): 1469-8161

Publisher: Cambridge University Press


DOI: 10.1017/S003118202100086X

PubMed id: 34078489


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