The Hattiesburg news. (Hattiesburg, Miss.) 1908-1917, 1912-01-15

healthy, growing condition. Healthy
nogs possess slight degree of re-
sistance against disease and this fac
tor plays no small part in the control
Of hog cholera. Filthy crowded quar-
ters, lack Of exercise and wrong meth
DDS of feeding overcome natural i'm
munity. There is no place on the
farm where disinfectants are SO nee
essary as in the hog houses and lots.
Pastures and lots may be cleaned up
by moving the hogs for few months
each year and cleaning away all lit
ter. The unused lots can be put to
good use If plowed and sowed in
some forage crop. Necessary precau-
ton against the food and drinking
water becoming contaminated must be
observed. The importance of clean
1000 and water and clean troughs and
feeding floors should be emphasized.
Muddy yards when used a few years
become filthy and endanger the health
OF the herd. Yards should be well
drained and all wallow holes filed
pens and pastures from which the
drainage from swine enclosures high
er up, should not be used. Hogs COM
ing from other herds or stock shows
should be excluded from the home
herd until they are positively known
to be free from disease.
They should also be dipped in a re-
liable disinfectant. The quarantine
period should be longer than the pc
Rod of incubation; 3 weeks is long
enough. The possible introduction of
disease by people, dogs, birds, ETC.,
should be guarded against, Whenever
1t is necessary for a person to enter
the lots where the swine are kept
he should clean and thoroughly dis
infect his shoes on leaving, the
premises. When an outbreak of chol-
era occurs on farm the herd should
be quarantined and all possible pre-
caution taken against the spread of
the infection in the neighborhood.
The separation of the herd into small
punches of about a dozen animals is
sometimes practiced. This is not adj
visable, as it spreads the disease over
a larger area The sick should be
separated from the well ones and a
good disinfectant sprinkled around
and in the quarters daily. The dead
hogs should be burned, or buried I'M
der layer of lime. At the end of an
outbreak the quarters should be
thoroughly cleaned of all litter and
sprayed with a disinfectant. The lots
should be plowed and sown in some
forage crops.
Hog Cholera Serum and Vaccines:
The economic Importance OF hog
cholera from a very early period in
its history has stimulated investiga-
ton work along the lines of proven
tive and curative treatment. In the
latter part of the COS the Bureau of
Animal Industry, U. S. department of
agriculture, carried on an extensive
field experiment with a serum pre-
pared from cultures of bacillus chol-
era suic and B. septicus. This led
to a line of investigation work that
resulted in our present methods and
knowledge of the disease.
The credit of developing the first
and at present only successful hog
cholera serum and method of vaccina-
ton belongs to Drs. Dorset and Niles
of the Bureau of Animal Industry. Al
ter several years of careful expert
mental work, this serum was used in
the field and its efficiency demonstrate
ed. At conference of state and fed
eral officers, held at Ames, Iowa, in
June. 1908, the methods of serum in
incubation and production and its use
as a preventive and curative agent
discussed. This resulted In a number
of the experimental stations and state
officials taking UP the work of serum
production on a small scale. and in
several states special appropriations
for the work have been made.
Hogs that are to be vaccinated
should be dieted and given clean
quarters with plenty of bedding for
at least ~ hours before they are
vaccinated. The skin over the region
where the serum is injected should
be cleaned with good disinfectant.
The injection is usually made deep in
the muscle of the inside of the thigh
of the hind leg. The parts must be
scrubbetd thoroughly before injection
is made. In recently infected herds
the temperature Of each hog should
be taken before injection. Depending
on the weight and extent OF exposure,