Rock Island Argus. (Rock Island, Ill.) 1893-1920, 1909-01-16
HAS FOUND SERUM
Discovery by Missouri Agricultural
College Will do Away With
Hog Cholera.
GREAT SAVING TO FARMERS
improved Method immunizes Swine
Against Dread Disease and Pre-
vents Outbreak.

AS result VI ptIieCtluS SERUM t0dC
is an antitoxin against hog cholera the
Missouri Agricultural college at Co.
lumbia guarantees the state legislature
that with an appropriation of $4,000
a year it will save the farmers of Mis-
souri, from $1.OO0,OOO to 100000 an
nually from the ravages of this dis
ease.
The serum was discovered by DIR. NJ.
Dorset of the United States depart
ment of agriculture, but it was perfect
ed and made practical by DR.. j. w.
Connoway of the Missouri Agricultural
college He has been working for
months on the problem and now has
the proportion exactly.
The Agricultural college announces
unequivocally that 1t is prepared to
vanquish that bane of the farmer, hog
cholera The discovery. which has been
tested and proved, will mean to the
animal world what antitoxin means to
humans and will reduce the price Of
pork to a minimum.
The Agricultural college here is re-
ceiving letters from agricultural insti-
tutions and experiment stations all
over the country inquiring tie results
obtained and asking for samples of the
serum and instructions in it's applica-
ton.
BY the improved method hogs are
immuued against cholera and out
breaks of the disease are stopped with
only the loss Of those animals that
died or became seriously affected be-
| fore the identity of the disease was
| discovered. and thus the spread of the
disease from one herd to whole
neighborhood and from a neighbor-
hood to other sections is stopped, and
| the immense amount of money that
is lost annually by the farmers is
changed into profits.
The serum. or blood. is drawn from
what is known as a hyperimmuniZed
| hog, the fibrin being removed so rs
| to prevent clottiHg. The serum is
| treated with small quantities Of car
| bolic acid and when kept in a cool
| place can be preserved from six to
| twelve months. When hogs are to be
inoculated an assistant from the Agri
cultural college injects from tea
| spoonful to tablespoonful into the
ham of the animal.
| Healthy Hog as Subject.
A hyperimmunized hog is produced
by first giving the cholera to a wei
hog and at the time injecting into hin
small amount of the serum. Ii
about ten days after he has recovered
| from the effects Of the treatment &
larger quantity of the blood from
hogs suffering with cholera is inject
ed, and this is repeated at intervals
Of ten days or two weeks, each TIM
increasing the dose of, infected bloot
until as much as quart or quar-
and half Is injected without affect
Ing the health of the animal.
This amount of infection injecte,
into the hog at one time Is sufficien
to kill five or more unimmuniZed AMI
mails. BY this means the immunit
Of the subject IS raised to a very hig
degree. and the animal is known as
hyperimmunized hog. The blood
| then drawn rs already described. L
the absence Of serum hyperimmunize
hogs may be made by beginning Wit
| hogs that have recovered in the nat
: ural way from attacks Of choler;
. The blood being injected into no
that is normally healthy, the sam
I process IS followed.
The blood or serum. is drawn froI
the tail of hog. The hair is shave
off the posterior part of the anima
and the surface is thoroughly dish
fected after. giving the subject batl
Great care is taken against germs {
blood poisoning.
An ordinary hog will produce frol
e a quart to quart and half of serul
at bleeding The bleeding can /
e repeated at intervals of ten days
: two weeks. depending upon the thri
| Of the hog. The operation can be r
peated until the tail of the animal
entirely gone. each bleeding taking
!. thin portion of the tail. When the tn
by repeated bleedings is removed
the hams the hog is killed and all Il
| corury, In b{c hody Ia dra Uu off