Audubon Republican. [volume] (Audubon, Iowa) 1894-1925, 1904-12-01
InoeuIatina for Texas Fever.

Bulletin 80 OF the South Carolina
Experiment Station says:
incubation is a process by which
northern cattle are rendered immune
to Texas fever by injecting hypo-
dermically into each about one cubic
centimeter (15 drops) of fresh blood
drawn from immune southern cattle.
The death rate among northern cat.
tie exposed to ticks In the South with.
out incubation is from co to 80 per
cent. TAis rate has been reduced to
10 per cent in 4.750 head by inocula
tion, and 1t is highly probable that
hereafter the death rate among inoc.
ulated cattle will not exceed per
cent.
The. term northern cattle" as used
IN TINS bulletin refers to cattle raised
north OF the government quarantine
line, and always free from ticks. The
term might be applied to southern cat
tie raised south of this line If they
nave never carried ticks, as they are
just as susceptible to Texas fever as
II they had been raised in the North
II either northern or southern cat
Tie raised free from ticks are to be
exposed to them they should be inoc.
ulated before exposure. II suscep
uole cattle are never going to be ex.
posed to ticks incubation is not neces.
sary.
only young cattle for breeding pur.
poses should be inoculated, generally
AFTER calves are weaned and up to
about eighteen months old. The best
time OF year is in the fall and winter
from October to March.
incubation has slight dwarfiing
ehect by depicting the system and
hlndering growth for two to six
months, but does not produce such
bad results as Texas fever. 1t some.
umes causes abortion and prevents
COWS from breeding for a limited time
but does not permanently injure the
bfee ling powers of cattle.
II Is not practicable to inoculate
ca'tie in the North, and after being
shipped South they should be pro
'ected from ticks before incubation
ana for at least sixty days afterwards
During the reactions the principal
symptoms to be overcome are con
stpation and high fever. Do not feed
cotton seed meal and bulls as an ex.
elusive diet, keep bowels open with
green feeds, roots or occasional dose
OF salts. and redree the fever with
quinine.
They should be exposed to gradual
tick infestation within six months az
ter incubation, and it is best to nut
'hem out to pasture In early spring
and keep them with native immune
catt.e. They should never be kept
free from ticks until midsummer and
then put into badly infested pastures.
incubation gradually loses its power
to protect cattle against Texas fever,
and If the animals are not exposed
the first year after incubation they
should be reinOculated before being
put on infested pastures the second
.ear.
This bulletin contains the records
OF 1893 head of cattle inoculated by the
veterinary division of the South Caro-
lima Experiment station. OF these Z5G
were nnrthern and 1872 southern
raised. One died from inoc Ilation
and TWO from subsequent exposure to
ticks, making the total loss three, or a
little ever thSee-fourths of one per
cent.
At the tine this work was begun
there were only two or three herds of
pure bred beef cattle in the state.
They can be found now in almost ev.
cry county. In FIVE years more South
Carolina will have a good supply of
steers for her feed pens, and can pos
sibly spare few TO feeders in neigh.
boring states.