The Owosso times. (Owosso, Mich.) 1897-1926, 1908-08-21
Preventative for Hog Cholera.

"Epidemics Of hog cholera can now
be effectively and instantly checked"
declared DR.. Charles W. Marshall
| head of the meteorological depart
ment of the Agricultural college.
Until a short time ago this disease
was considered as fatal to hogs as
is the bubonic plague to humanity.
| The announcement of a discovery
| for it's prevention will be a Godsend
| to farmers, who live in constant fear
of their herds being wiped out with
the dreaded disease. DR.. Marshall
describes his remedy as follows:
"An epidemic is prevented by
vaccinating hogs with the hyper-im-
munized blood of an animal that has
weathered an attack of cholera. In
| the first place it Is assumed that ev-
| cry hog is naturally susceptible to
| hog cholera. Once in a while an
animal weathers an attack and is
| then considered to be naturally i'm
mune. However, the serum from the
blood of naturally immune hog,
when innoculated in the system of a
hog that is susceptible to the disease
will not protect that hog from chol-
era. In order to make the blood of
| naturally immune hogs, efficacious in
preventing the disease, when intro
duced into susceptible animals, it is
necessary to put the immune hogs
through a process of hyper-immuni-
zation. To accomplish this, guam
titles of virulent blood from a hog
sick with cholera are introduced
into the naturally immune hog. To
an average animal, two grams of the
virulent blood would cause death
within fifteen days. The pig that has
weathered an attack is given doses
of 80, 225 and $50 grams of the
poisoned blood at intervals of a
week. A dose of $50 grams is about
equal to a pint 1t is introduced
either through the skin or directly
into a blood vessel, usually opened
at the ear BY this process, the
blood of a naturally immune hog ac-
quires the power to counteract the
development of hog cholera when in
troduced into hogs that are suscepti-
BILE to an attack of the disease
Twenty grams of the blood of an
immune hog that has been hyper
immunized, together with two grams
of virulent blood, may be used as a
preventative for cholera when in
troduced into the circulatory sys-
tenn of susceptible hog of a hun
dred pounds in weight. For larg-
er. animal a greater quantity would
be required. If twenty grams Of
the hyper-immunized blood were in
troduced without the two grams of
poisoned blood, the animal would be
only temporarily protected from an
attack. The injections of the two
kinds of blood are usually made un-
der the thighs of the pig. When a
quantity Of blood is desired of a pig,
part of the blood flows freely there,
and it does little injury to the ami |
NAL"
DR.. Marshall has been working on
the Experimentation of blood |
from naturally immune hogs during
the last month. The work is being
carried on in conjunction with the
bureau of animal husbandry, at |
Washington to determine what can
be done with the serum. E A number |
of pigs are kept in the bacteriologi- |
cal laboratory constantly and the |
serum is experimental with there.
I'VE don't know whether all the
epidemics that have killed off hogs
in Michigan are hog cholera or not"
said DR.. Marshall. 1--WE will manu-
facture the serum and will select
typical epidemics throughout the
state and see If the. serum will act
as a preventative for all epidemics."