Group Title: Press bulletin
Title: Lumpy jaw
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 Material Information
Title: Lumpy jaw
Series Title: Press bulletin
Physical Description: 4 p. : ; 21 cm.
Language: English
Creator: Dawson, Charles F ( Charles Francis ), 1860-1928
University of Florida -- Agricultural Experiment Station
Publisher: Florida Agricultural Experiment Station
Place of Publication: Gainesville
Publication Date: 1902
Subject: Actinomycosis -- Control -- Florida   ( lcsh )
Cattle -- Diseases and pests -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
Statement of Responsibility: by Chas. F. Dawson.
General Note: Caption title.
General Note: "June 15th, 1902."
General Note: At head of title: Department of Veterinary Science.
 Record Information
Bibliographic ID: UF00090452
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 77824498

Full Text

Press Bulletin No. 26.


Experiment Station.



Lumpy Jaw.
Lumpy jaw is known scientifically as actinomycosis,
and is caused by the'entrance into the tissues of a fun-
gus. The disease may affect any part of the body, and
man, horses, battle, sheep and swine are susceptible. It
occurs more often in cattle, and in these animals the
jaws are the parts most frequently affected. It is char-
acterized by the development of tumors, thickening
and hardening of the skin of the parts affected. The tu-
mors vary in size from'a pea to a cocoa nut, and are
called by some wenss." This disease is much more com-
mon in some of the European countries than in America.

June 15th, 1902.

In England it is found more often affecting the tongue,
and is called "woody tongue" in that country, because
the tongue becomes swollen and as hard as a board.
Lumpy jaw is not a contagious disease, but is an in-
oculable one. That is to say, an animal suffering with
it does not infect others. The disease is contracted
from infected pastures, or from food upon which the fun-
gus has developed. Those food plants having sharp
barbed parts, such as barley and rye, produce the disease
by penetrating the gums and carrying in the infective
germs of the disease, which in this case are spores, or
minute seed. Although the cause of the disease, the ray
fungus actinomycess) is well known and can be propo-
gated artificially, no one has yet succeeded in producing
an attack of actinomycosis in experimental animals.
This indicates that there is a certain stage in the history
of the fungus in which it has the disease-producing prop-
erty, and that this stage is closely associated with some
developmental stage of the plant upon which the fungus
thrives; that animals eating such plants furuish the
proper requirements for the development of the disease;
or that failure'to produce the disease by the inoculation
of actinomycotic tissue is due to the. fungus undergoing
some change during its residence -in the animal's body
which robs it of its infective property.
As before stated, lumpy jaw generally affects cattle
in the jaws, producing tumors of varying size, iot only
in the soft parts, but also in the bones. The disease
starts as ulcers on the gums near the teeth and thence
spreads to the bone causing it to swell. From the bone
the disease may spread to the skin or to the mouth, caus-
ing displacement of the jaw teeth. If the disease attack

the tongue or throat, difficulty in chewing and swallow-
ing is experienced, and a cough would occur if the larnyx
became involved. In the skin the disease tumors are
firm, round, oval, or flat and elongated, and vary greatly
in size. With age these tumors may become softer, and
when cut open, or when they burst, discharge a yellowish,
semi-liquid mass containing granules about the size of
grains of sand. These little granules are seen under the
microscope to consist of concentrically and radically ar-
ranged, club-shaped cells, forming a rosette. They are
colonies of the fungus which cause the disease, and have
developed from the original seed introduced by the barbs
of plants. Sometimes the tumor growth protrudes
through the skin by a stalk and then presents a raw,
angry-looking, granular surface in which the small gran-
ules can be found. A case that came under my notice
recently was of this character. The jaw bone on the left
side was also much enlarged.
The former treatment of lumpy jaw consisted in the
removal of the tumors with the knife. It was only in
cases where the disease had not invaded the internal or-
gans and where all diseased tissue could be completely
excised, that hope for recovery could be held out.
We now know that the iodide of potassium is a speci-
fic for the disease. It was first used by Thomas-
sen in 1885, and extensive trials of the remedy by our
Bureau of Animal Industry, at Chicago, confirmed
Thomassen's results. In addition to the internal ad-
ministration of the iodide of potassium the tumors should
also be painted with the tincture of iodine frequently, or
it may be injected iuto the tumor. The medicine is given
daily in one-and-a-half drachm doses dissolved in half a

pint of water. In a few days the effects are noticeable.
The animal will water at the eyes, and there will be a
discharge of mucus from the nose. In some cases, the
scurf-skin will peel off the neck and shoulders, and a
skin eruption may occur. These are symptoms of iodism,
and the earlier they appear, the sooner will the lumps bo-
gin to shrink. No alarm need be felt, as all it is neces-
sary to do in case the iodism becomes usually severe,
is to stop the medicine for a day or two, and then begin
again. Shouldthe animal become constipated, give a
dose of epsom salts, one pound dissolved in one pint of
water to whichadd one pint of syrup and four
ounces of ginger. In ordinary cases, and particu
larly those cases in which the soft parts only are affected,
a visible improvement may be expected in eight or ten
days. When this has occurred, the dose of medicine
may be reduced, and in some cases stopped altogether.
() State papers please copy or notice.

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