| Case #: Not
Assigned
Name: Wilbur
Wilbur is a
barrow, approximately 10 years
old. He was rescued after having
been raised as a "house
pig" for the first 4 years
of his life and then abandoned by
his owners. He has always been an
outgoing and friendly little pig
with a mild disposition and not
disposed to fighting with his
herd mates. He enjoyed human
companionship and displayed all
of the typical potbellied pig
weaknesses for belly rubs and
snacks.
Wilbur made
the transition from "house
pig" to outdoor pig easily.
On arrival at the sanctuary, he
was wormed with Dectomax, and
vaccinated for Erysipelas,
Brucellosis, Pseudorabies,
Tetanus and Mycoplasma. Worming
has been accomplished routinely
every spring and fall and his
vaccinations have been maintained
annually since his arrival at the
sanctuary. He has not been ill
since his arrival at the
sanctuary over 6 years ago.
Wilbur is an
average sized potbellied pig.
Estimated weight before his
illness was 140-160 pounds. He
tended to be one of the
"heavier" pigs in the
herd and, like several of the
older barrows in his herd, was
fairly sedentary. However, he
stayed active enough that routine
hoof trimming was not necessary.
His tusks were due to be trimmed
in June.
Wilbur lives
in a one-acre pasture with 21
other rescued pigs....a mixture
of barrows, gilts and sows. The
pasture is maintained in pasture
grass: a mixture of alfalfa,
fescue, timothy, clover, orchard
grass, etc. As with all the pigs
in his herd, he receives a
twice-daily ration of the alfalfa
based pig pellets that are fed to
all the pigs at the sanctuary.
All the pigs in his herd are
rescues, all vaccinated and
wormed regularly and all are
relatively small pigs. No new
pigs had been added to his herd
in the past 6 months. His herd is
physically separated from all the
other herds at the sanctuary. No
other animals in his herd (or any
other herd) are, or have been,
sick. Wilbur was last seen by the
vet approximately three weeks
prior to the onset of his illness
as a matter of routine and was
apparently healthy and fit.
Over the
winter (1999 and 2000), Wilbur
began showing some signs of
discomfort with his rear legs
when walking. The problem
appeared transitory and related
to cold, damp weather. The
assumption was made that he may
be coming down with the early
signs of arthritis. As the
weather improved, Wilbur's
difficulty walking improved
somewhat and, at the vet's
recommendation, we had agreed to
simply observe him over the
summer and attempt to reduce his
weight by about 20 pounds.
On 5/5/00 we
noted that Wilbur was having
extreme difficulty walking at
evening feedings. His rear legs
appeared to be giving him a great
deal of trouble and he was
unsteady on his feet. He fell
several times while trying to eat
and finally gave up and returned
to his barn. He did not feel
feverish, but he protested loudly
when he was made to get up. He
drank water and appeared to be
urinating and defecating
normally. A decision was made to
observe him for 24 hours before
calling the vet.
On 5/6
Wilbur was unable to get up for
the AM feeding. Walking was
extremely difficult for him and
his rear legs appeared to be
extremely weak. We noted some
pedal edema in all four legs, but
more pronounced in the hocks of
his rear legs. A routine call was
placed to the vet. Wilbur moved
to the large mud hole where he
drank and submerged himself in
the mud and water at around 9:00
AM. Temperatures that day quickly
elevated to the mid 90's...
uncharacteristically hot for that
time of year. The animals
were checked regularly since most
had not yet blown their winter
coats. At 11:00 AM Wilbur was
still resting comfortably in his
mud hole and was reluctant to
move out of it.
At noon on
5/6 we heard Wilbur begin
screaming. We ran to his pasture
to find him midway between the
mud hole and the barn, in the
direct sunlight. He was lying on
his side with several pigs
attacking him. He was breathing
approximately 60 times a minute
in short, ragged breaths and was
unable to rise on his own. He was
extremely hot to the touch. We
immediately began cooling him
with a garden hose and as soon as
his breathing returned to a more
normal rate and he had adequate
respiratory depth we moved him by
tractor to a shaded pen under the
house. He was placed on clean
straw with a fine water mist and
fan on him. We noted no seizure
activity; however, both pupils
were fixed and dilated. He was
lethargic but conscious and would
respond appropriately to painful
stimuli. His temperature rectally
was approximately 108 degrees F.
Heart rate was approximately
160-180. Lungs were clear
bilaterally by auscultation but
breathing remained rapid and
shallow at a rate of about 40-50.
An emergency
call was placed to the vet who
was tied up on another emergency.
He prescribed IM Banamine,
Excenel IM and oral Bute (1/4G
daily) until he could arrive and
check him out.
By 8:00 PM
Wilbur's fever had broken and was
down to 102 rectally. One pupil
was now equal and reactive while
the other was still fixed and
dilated. He was lethargic and
unable to stand. We began
syringing water and Pedialyte as
he would take it. We were able to
syringe over 1000 cc of fluids
that evening.
For the next
5 days Wilbur's fever would spike
to 107-108 as soon as the end of
the effective dose of the
Banamine was reached. As long as
he was on the Banamine, his fever
remained about 102. He refused to
eat, but willingly accepted
syringed water and Pedialyte.
Urinary output was minimal but
consistent. No stools were noted
over the 5-day period, but since
he was not eating, this was not a
source of major concern. On the
second day, both pupils were
equal and reactive to light, but
he remained very lethargic and
with a resting pulse of around
110. Respiratory effort was good
and lungs continued to be clear
bilaterally, but breathing
remained relatively shallow. On
the fifth day the fever broke and
has remained at or around 100
degrees F. ever since. Excenel
and Bute were continued, but the
Banamine was discontinued when
the fever broke.
The vet's
first diagnosis was a viral
vasculitis and blood was drawn
and sent off. It was noted a
severe echymosis particularly
between the forelimbs and down to
the feet of the forelimbs as well
as on the hind limbs. Pedal edema
was pronounced and there was a
marked discoloration of all
non-pigmented skin. There also
appeared multiple ulcerated areas
on the coronary bands of the hind
feet...less severe on the front
feet. At this point the vet was
unsure if this was related to
this primary problem or secondary
to the fever.
According to
the vet, the only abnormalities
in the blood results were a
slightly elevated white cell
count and an extremely high
protein level.
On 5/13,
Wilbur began sloughing skin.
Virtually all of the skin on his
body has, or is currently,
sloughing. There have been a
number of large, necrotic holes.
Some have become approximately
two to three inches in diameter,
although most are smaller. All
are approximately 1" thick
and deep enough to penetrate the
entire layer of subcutaneous fat.
No muscle tissue has been visible
through the holes. The original
sloughing left weeping reddish
wounds under the skin, but
subsequent sloughing took place
with new, non-pigmented skin
under the old skin.
Wilbur was
maintained on Tucoprim powder as
a guard against infection while
his skin was sloughing and early
on we had him on two week regimen
of Azium 10 mg. Orally. He began
eating a mixture of pelletized
feed, yogurt and Pedialyte. He
was able to drink and eat on his
own. For three weeks he had to be
syringed and spoon-fed primarily
because the skin sloughing around
his face, mouth and nose made it
difficult for him to eat or drink
normally. Plus, it is still
difficult for him to stand long
enough to eat and drink normally.
He is now
able to get up unassisted
although he remains very unsteady
on his feet. His rear legs are
neither as strong nor as steady
as his front feet and seem to be
still swollen. However, the skin
is just now sloughing off his
rear legs and feet and the new
skin over his rear feet appears
tight and cracks easily when he
bends his rear hooves. This may
account for his reluctance to use
his rear legs and feet. On good
days he is let out to walk, graze
and exercise. He is now drinking
several gallons of water daily
and eating well on his own,
although he must be assisted
since he cannot stand for long
periods of time without falling
down. He is alert and complains
loudly when bothered or made to
get up and move.
It is
difficult to tell at this point
whether there is any circulatory
compromise to the rear legs
and/or hooves. One rear hoof
appears to be compromised, but
with the skin sloughing in this
area, it is impossible to tell.
Wilbur is
stronger and appears to be on the
mend, although it is obvious that
he has a long and difficult
recovery period ahead of him. At
this point we are simply
providing maintenance therapy,
hydrating him well and forcing
exercise to the maximum he will
tolerate. We will maintain him on
Tucoprim prophylactically as a
guard against infection while his
skin is still open in numerous
places. Keeping flies and, of
course, maggots out of his
various open lesions has been a
difficult task, but a large dose
of IM Dectomax seems to have
helped with maggot population
control. An occasional spraying
of Wilbur and his bedding with
Permectrin II seems to have aided
in fly and maggot control.
The vet
contends that Wilbur contracted
some sort of unspecified viral
vasculitis. Serology neither
confirmed nor denied this
diagnosis. We have also
considered the possibility of
snakebite but were unable to find
any fang marks, puncture wounds
or evidence of evenomation. No
other pigs in Wilbur's herd (or
elsewhere on the sanctuary) are
ill. We have not done a titer for
Erysipelas as we are not sure
what a good benchmark would be
for a potbellied pig anyway.
The pictures
included show the skin sloughing
and attendant necrosis when they
were at their worst (6/1/00 to
6/5/00). While he is still
sloughing in some areas, the
majority of his skin has now
sloughed and has been replaced
with mottled and non-pigmented
healthy skin.
Update:
7/2000. Wilbur continues to
improve steadily. All skin has
been sloughed and replaced with
new skin. He lost 75% of his tail
in early July. Both rear feet
have good circulation and he is
walking with almost no difficulty
although he remains a bit
unsteady in the rear end. He is
eating normal food ration with
only some water added since he
lost most of his "lips"
and the replacement skin is still
very tender. He gets up in the
morning and grazes in the yard
until breakfast and then goes to
sleep under
his favorite bush. He gets up
several times during the day and
grazes, drinks, etc....and in the
evening after dinner he goes back
in the quarantine pen and goes to
bed. He is no longer on any meds
and we are just watching and
encouraging him to exercise as
much as he is able. The vet
looked at him today and was
amazed at his progress. He still
has a few open spots, mostly from
where he has rubbed his new skin
because it itches him. Plus some
of his huge necrotic holes are
healing slowly and are still
scabbing, but other than that he
looks and acts good.
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