By:
Roger Bourdon
I
have been around horses for quite some years but I have never heard
this allergic reaction described as hay fever (as in the same problem
that humans suffer with). I don't get it myself, for which I am
very grateful, but I do have friends that do, and can see the misery
it causes, so I can assume that it is equally uncomfortable for
a horse. Although the season is closing, I thought I'd still take
a look at what it's all about so you can be on the lookout for it
next year.
Apparently it's a fairly common condition seen in young and old
horses alike, and it's an allergic Respiratory Disease. Unlike humans,
horses that have allergies tend to show more flu like symptoms and
less sinus and nasal effects. Their lungs become inflamed and are
more likely to get viral and bacterial infections. The horse owner
sees this as frequent (recurrent) 'chest colds' that the horse never
quite gets over, as I did, before I heard that it was in fact a
form of hay fever. Other symptoms include coughing, a lot of eye
discharge and they get tired easily.
There are many causes of allergic Respiratory Disease but some
are more common. Several types of mould spores and weeds found in
otherwise high quality hay or straw seem to bother many horses.
This is a seasonal thing, so for the horse at pasture the problem
may only be seen in spring and summer. However, hay that is taken
from local fields can be a year round problem. Each year, the horse
usually shows more symptoms as its reaction to the problem gets
stronger and stronger.
Treatment
of this problem can be as simple as keeping your horse outside where
air circulation is available (fresh air versus stagnant dust filled
air). If your horse must stay in the stall most or all of the time,
try to store your hay in a separate place and ensure good airflow
in the barn. If it is cold, put a blanket on the horse and soak
the hay fed to the horse in water first.
If the problem is not taken care of by the above steps, then
you need to speak to your Vet. To find out the cause, the vet can
do a simple procedure that looks at the fluid and cells in the horse's
lungs to see how bad the allergy is. Secondly, there is a relatively
new blood test that can specifically determine what 'things' the
horse is allergic to and allows them to find a 'customized' treatment
for that individual horse. Other general treatments include corticosteroids
(cortisone) and bronchodilators (like those taken by human asthma
patients). The important thing to realize is that recognizing your
horse has this problem is more than half the battle. Once that is
done, proper treatment can dramatically improve the usefulness of
your horse.
I was very grateful when it was pointed out to me, although I
will admit to feeling a bit stupid at the time. However now I know
what it is, I can deal with it, so a little stupidity has bought
me some knowledge that I can now use to keep my beautiful horses
in better health, so that's a price I will gladly pay any time.
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