Fecal flotation from a miniature heifer
A fecal flotation was performed on a fecal sample collected from a miniature heifer. In addition to strongyle eggs, which other parasite egg is present (indicated with arrows)?
Case and photo provided by veterinarian and NCVP resident Dr. Yoko Nagamori, Oklahoma State University.
These eggs are Strongyloides eggs. Strongyloides eggs are shed in the feces, releasing the first-stage larvae. After a period of free-living development in the environment, they develop into the infective third-stage larvae. Modes of transmission include ingestion of the third-stage larvae, penetration of the skin, and transmammary. Strongyloides eggs may be confused with stongylid eggs, which are more common to see in horse fecal flotations. However, the two types of eggs are easily distinguished because Strongyloides eggs are smaller and contain larvae when passed in feces.
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