Time to get the vet
involved and so I called him out to
examine her properly.
First of all, my vet
found "whistling" in one bronchial tract
which meant she was having difficulty
breathing and that explained the
"heaves". He suggested two things. The
first was that she had a shot of
cortisone which suppresses the immune
system and stops the horse from having
the allergic reaction to whatever it
was that was causing the allergy. Now,
cortisone is not without it's problems
and shouldn't be given to overweight
horses or ponies by injection. The
reason for this is that it can trigger
an attack of laminitis so it's not the
answer in all cases. However, my mare
was not overweight and it was worth the
risk. There are two doses that can be
given. The first has a shorter effect
than the second but is less likely to
cause laminitis so we opted for the
short dose. MGB was terrified (she hates
needles) and wouldn't relax her neck so
it took some doing on the vet's part.
MGB reacted badly to the
cortisone - she sweated up in minutes
and had to be turned out to cool off
quickly. This can be a totally normal
response even in humans although not all
humans or horses experience this. The
horse isn't dying , just get it cool as
quickly as possible. I went up again
later in the evening and she was fine.
The vet suggested that we
move her to a different box. Her old
home ( for 19 years) was in a "box of
four" where the boxes looked at each
other rather than the more usual
arrangement of a line of loose boxes. We
moved her into the "line" into a larger
box , across from her old box , with
more air flow (a great big hole in the
ceiling) and also this box was sealed
off physically from the box next door.
This also meant that the pollen
generated by the trees could flow over
her box rather than into it .
He also wanted her on
shavings but I thought that if I did too
many things at once then I wouldn't have
a clue which of them had worked so she
stayed on straw.
MGB moved house the next
day and seemed happy in her new upgraded
bedroom.
I talked at length to my
husband, a life long asthmatic who has a
vast knowledge of the kinds of drugs
available and the effects that these
drugs have on the body - he also told me
that the very last thing he wanted to do
when his breathing is compromised is any
kind of physical exercise so I stopped
riding immediately. I also talked to my
vet again who was going to a trade show
in Scotland and he offered to track me
down an equine "spacer" which is a
similar device to the one used by human
asthmatics to take their sprays. The
difference is that humans take their
medication through their mouths and
horses take it through their nostrils.
Now just a word about
sprays here.
Sprays administer
cortisone and bronchio-dilators using
actuated particles which are the most
effective way of getting the drug into
the horses bronchial passages where it
can have an effect. Even using a
nebuliser either electric or a foot
pumped one does not get the particles
fine enough to line the tubes properly
and so the effect is reduced.
On average, a horse of
around 15.2 requires 10 times the daily
dose that a human requires as a
maintenance dosage.
The only way of giving
these sprays is to use a proper equine
"spacer" with a one way valve system
which is clamped over one nostril whilst
the other nostril is closed using your
hand. The spray is then inserted into
the end of the spacer and depressed into
it . The horse breathes in, taking the
drugs through the spacer and the one way
valve through the nostril and up into
the nasal passages and finally into the
bronchial passages and lungs. The fine
particles line the tubes and lungs where
they can begin their job.
The first spray is a
corticosteriod and the brand name is
"Becloforte" or "Becotide" . The spray
is usually in a brown "puffer".
This spray suppresses the
immune system to allow the other drugs
to work. It can be reduced after a
period of ten days , halving the dose
each day after the tenth day until the
horse cortisone free. The good news
about this way of administration is that
it has not been known to cause laminitis
like injected or oral steroids so it's
safer . I used 20 puffs daily (10 twice
a day)
The second spray is a
fast acting bronchio dilator , brand
name "Ventolin" or "Salbutamol" and is
blue in colour. This immediately opens
up the airways and makes breathing
easier and the horse more comfortable.
This is used in a consistent amount and
I used 20 puffs daily (10 twice a day)
The final spray is a long
acting bronchio dilator brand name "
Serevent" in a green puffer and this is
the one my husband says he could not
live without. Serevent keeps the airways
open for twelve hours at a time . Again,
the dosage is the same.
And so MGB lived on this
regime all last summer with no breathing
problems until the coughing began again
in November of 2001. The vet duly came
and gave her another cortisone injection
and shook his head sadly saying he
thought we had really cracked it. I
still believed there must be a rational
explanation for her relapse and so we
made sure that her hay was thoroughly
soaked before feeding it to her. She
stayed "cough free" on wet hay and her
drugs until Christmas when it was cold
and someone gave her dry hay instead and
the coughing began again.
We took her off hay
totally and gave her haylage which at
another £20 a week isn't cheap but she
coughs only if someone accidentally
mixes hay in with her bedding and she
then tries to eat it. She is also off
all medication and I would only use it
now if she began to relapse but I
believe that we have found the source of
her allergy -HAY !!
A lot of horses on our
yard are coughing now and I think it's
because we are now feeding last years
hay and it's dusty. It might be OK for
younger horses with stronger immune
systems but my horse needs a bit more
coddling at her age .
In the past, vets
labelled this condition COPD (Chronic
Obstructive Pulmonary Disease) but I
thinks it's a misnomer.
Almost all the humans
who are diagnosed with COPD are smokers
- horses don't smoke and so I believe
it's an allergy to hay spores, nothing
more than that. It gets worse in winter
when hay cannot be soaked because it's
too cold and the hay freezes and also
because the hay is old and dusty. It
gets better for some horses if they are
turned out because they are away from
the source of the problem - ie .HAY.
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