(Suitably Qualified Persons) are on hand to help you with your
animal health plan using worm egg counts.
Remember that there are certain times of year and certain
circumstances when you should treat for a specific parasite
burden that is not tested for nor reported in the egg count so
you may need to select certain products to address these
circumstances as well as those reported by the laboratory. We
are more than happy to help in these situations so please do not
hesitate to contact us with any queries you may have.
We will send you a kit for collection of a faecal sample along
with the instructions and paperwork. The test will be done at
the laboratory and we will analyse the results for each horse
make recommendations for an effective animal health plan.
The results are
measured in EPG or
eggs per gram which indicates the actual level of worm
When we use the symbol <
followed by a number such as
<200 EPG this means that the level of worm
eggs found is less than 200
If the count is less than 200
EPG then it is a Low count and would suggest
that your worming measures are working which would then
suggest delaying the next treatment.
If the count is between 200 EPG
and 1200 EPG it is a
Medium count which would mean that that particular horse
needs treatment and perhaps the overall strategy needs
If the count is more than 1200
EPG it is a High count that horse should be
treated without haste and the management and worming
strategy and planning will need considerable attention.
Please note the following:
Results cannot show encysted stages of redworm
potentially the most harmful stage of the redworm
parasite. Horses can have burdens in the order of
several million encysted larvae yet show a negative or
low count (<100
EPG) FWEC (Dowdall et al. 2002, Veterinary Parasitology,
Pinworms are not
reliably detected in standard egg counts because they
don't consistently lay eggs as part of their life-cycle.
and bots are not
identified in FECs either. --- It is not a definitive
test for tapeworm
--- Bots will rarely
appear in a dung sample. Eggs are not shed at a constant
rate and immature parasites don't lay eggs, so a FEC
will only ever provide a snapshot of a horse's adult
worm burden at that particular time.
FECs are useful to identify which horses are shedding
high numbers of worms but are not the whole answer.
Usually results will say Stronglye eggs. This is
redworm, the most common parasite that affects horses.
When you interpret your results a full risk assessment
needs to be undertaken and we could never specifically
say that NO treatment is necessary as there are many
factors to be considered. There are occasions when the
results are less than accurate due to variations with
regard to sample taking, seasonal timing and the actual
larvicidal cycle. The age of the animals can also affect
the result. Older animals tend to have greater
resistance to internal parasites, so the correlation
between number of parasites and worm egg count is not
always as clear as with younger animals
We can supply your next testing kit and help you to
interpret the results and act accordingly.