Morris tribune., 1911-09-29
HOG CHOLERA.
(Article No. 12.)
BY Dr.. M. n. Reynolds, Mime
sofa University Farm.

j. !. \ !. + + !. i. j. + i. i. i. + !. i. !
It has become altogether unneces
aary for any intelligent farmer to suf
fer severe losses from hog cholera
We have been trying, in the preced
ing articles, to help farmers save hogs
from cholera. Nowadays this is 2
simple thing to do.
Cause.
It has been demonstrated that hog
cholera is due to very small living
germ, so small that it is capable of
passing through the pores of an ordi-
nary laboratory filter which catches
and holds back ordinary bacteria.
Symptoms.
Symptoms of cholera are plain and
simple, as a rule. Hogs are off feed;
some develop diarrhea; their eyes and
skin show Inflammation; there is more
or less coughing; in some cases the
gait becomes irregular and stagger-
ing. A few usually die very suddenly.
Carcasses sually show Redeemed or
purple skin over the flank or belly.
There may be sores, or at least an in.
famed condition of the skin of the
back, neck or ears. Hog cholera
lungs show peculiar type of pneumo-
MIA The diseased portions of lung
resembles liver and are set off by
sharply defined borders from adjacent
healthy lungs, as rule. The intes-
tines show spots of acute infamma.
ton or ulcers on the inside lining
membrane
How Scattered.
Hog cholera manure. blood, and
practically all parts of the carcass of
a dead hog, are capable of spreading
disease. Anything capable of holding
and carrying very fine particles of
dust is capable of holding and carry
ing the germs of cholera.
Prevention. a. .'
We believe that cholera infection is
usually taken in by healthy hogs with
food and drink If, therefore, the
food and drink troughs, feeding floors,
etc, are free from infection, there is
small probability of the disease. Pre-
vention is also to be had by vaccina.
tion, which is now available.
When cholera comes into your town
ship, it is quite time to begin watch.
ing your hogs carefully, and to plan
for vaccination, II necessary. Don't
rush off lot of valuable brood sows
and half finished young stuff Arrange
with your local veterinarian for vac
cination. If you have no competent
veterinarian available, write to the
Veterinary Division, University Farm,
st. Paul, Mimi, anyway, and we will
endeavor to help you. Let US know
how many hogs you wish to vaccinate,
and approximate weights. University
Farm serum is sent out by express.
G. 0. D. or cash in advance.
Legal Features.
Hog cholera is recognized by our
Minnesota law as an infectious dis
ease, and is to be considered as a
menace to the hog stock Of a neigh
borhood. Owners should know that
our state law makes it an offense to
do otherwise than to either burn or
deeply bury carcasses of hogs that
have died of any disease 1t is an Of
Tense for an owner to permit his
sick hogs upon any public highway, or
upon any other land than his own.
The state considers all stock yards as
infected.
Vaccination.
There are two methods of vaccina-
ton available. One is perfectly safe,
and gives immediate but temporary
immunity. 1t is important for owners
to understand that this immunity is
unless hogs are exposed to
plenty of cholera soon after vacci-
nation. The other vaccination, called
double or permanent vaccination, car
ries a slight risk, which is now esti-
mated at 2 per cent or less. This
gives permanent immunity, so far as
he average farm life of a hog is
loses of serum. During the present |
season the University Station ex-
,ects to produce $4,000 to 1900 |
loses, and we hope to double the num-
Der again next year.
There have been a few disappeint- |
nents, and We expect a few disappoint- |
nents. AS rule, disappointments have
'een due to an unwise use of serum.
n some cases, farmers were disappoint- :
ID because they expected permanent |
from serum-only vaccina-
ion.
Division of the University Experiment