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To identify Tritrichomonas foetus in feces under a microscope, look for pear-shaped, motile organisms with an undulating membrane and three anterior flagella, exhibiting a jerky, rolling movement.
Here's a more detailed explanation:
Appearance:
Tritrichomonas foetus appears as small, pear-shaped (pyriform) protozoa, roughly 5-25 μm in size.
Motility:
They are motile and exhibit a characteristic jerky, rolling, or "jitterbug" movement.
Structure:
Look for three anterior flagella and an undulating membrane along the body.
Microscopy:
Wet Mount: A fresh saline fecal smear can reveal trophozoites.
Phase-Contrast Microscopy: This technique can help visualize the flagella and undulating membrane more clearly.
Dark-Field Microscopy: Trichomonads appear as small rolling luminescent footballs.
Differentiation:
T. foetus can be mistaken for Giardia, so pay attention to the motility and undulating membrane.
The nonpathogenic Pentatrichomonas hominis can also be confused with T. foetus, so consider the clinical context.
Other Diagnostic Methods:
Fecal Culture: A culture system is available for cattle and can be used to detect T. foetus.
PCR: PCR testing is a more sensitive method for detecting T. foetus in fecal samples.
Trichomonas intestinalis in stool
Trichomonas in stool microscopy
Trichomonas hominis in stool treatment
Intestinal trichomoniasis symptoms
Trichomonas hominis in stool reporting
Trichomonas vaginalis
Motility of Trichomonas vaginalis is described as
Trophozoite of Trichomonas vaginalis