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Fecal egg counting


Fecal egg counting is a method to determine the number of worm eggs excreted per gram of feces (EPG). Fecal egg counts (FECs) have many uses in parasite control programs. They can be used to estimate the parasite load in an animal, show changes in the seasonal levels of pasture infection, determine effectiveness of dewormers, and evaluate genetic differences in animals.


Where can I send samples to for fecal egg counting?  

Members of the American Consortium for Small Ruminant Parasite Control who have laboratories are offering affordable ($5-$6 per sample) fecal egg counting for the purpose of genetic improvement through the National Sheep Improvement Program (NSIP) or to determine fecal egg count reductions (to determine dewormer resistance). The results will be provided as numbers only with no interpretation or consultation.    Learn more

Go to list of laboratories that do fecal analysis =>


Conference proceedings

External links




Last updated 11.02.23. Links verified 11.02.23.

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