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Understanding Poultry Worm Count Results
Here is a guide to interpreting your poultry worm egg count result. For coccidia results see further down this page.
EPG = Eggs Per Gram
OPG = Oocysts Per Gram (coccidia)
< 50 EPG No eggs seen in sample including no cocci
No worm eggs or coccidia oocysts were seen within the sample. Retest quarterly to keep monitoring parasite burdens within your flock.
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Clear results should be treated with slight caution as many factors can affect sample quality. If you suspect a worm burden contact us (with photos if you have seen anything come out) so that we can help advise further.
LOW (under 200 EPG)
A low level of eggs were detected, below the usual threshold for treatment based on this type of worm. You can in some cases delay treating the animal/herd and retest approx 12 weeks time.
*Heterakis (caecal worm) in poultry may benefit from treating even at low levels due to its association with the disease histomoniasis.
MEDIUM (200- 1100 EPG)
MEDIUM: The sample has a burden of parasite eggs that is above the threshold for worming for this type of worm.
Worm the individual/flock and test each quarter (12 weeks) routinely.
HIGH (1150 + EPG)
HIGH: The sample shows a significant burden of parasites and treatment is recommended.
Ideally retest 14 days post worming to check if further treatment is needed. Coop/run hygiene should be reviewed to avoid future high burdens.
Coccidia Results
Coccidia (a protozoa) is reported separately from worm eggs. If no eggs are seen in the sample then your report won't mention them, but if we find coccidia oocysts they will be listed as below:
LOW (Less than (<) 5000 OPG)
LOW: Healthy birds can carry quite high numbers of coccidia oocysts without the need to treat. Monitor for symptoms such as blood in the stool or a hunched posture and improve coop hygiene to try and bring the numbers down. If in doubt consult an avian vet.
MEDIUM (5000 - 50,000 OPG)
Treatment possibly required, monitor for symptoms and consult with an avian vet. Practice good coop hygiene to help reduce infection.
HIGH (50,000 + OPG)
Treatment will be required, consult with an avian vet. Improve coop hygiene where possible to help reduce infection.