The Vinita weekly chieftain. [volume] (Vinita, Indian Territory [Okla.]) 1902-1905, 1905-07-13
TEXAS FEVER.
Kt's CAuass aad Treatment Discussed
by v etarinar


There Is little knowlenge concern.
ing the early this disease. with the
development, however, the shipping
aud Interchange of animals gradually
came into prominence, and with t.
this disease which had long been
known ia certain localities vas more
widely scattered snd finally Il came
10 b. au important barrier 20 the cat.
tle taale
GEOGRAPHICAL DESTRUCTION.
Inthe United States the dlstnbu.
tion Of the Texas fever corresponds
with ths tick Roophilus Anuiatis
BOWS
CAUSE
Texas fever Is caused hr a micro
organism pgoplasma blgemimiml
belonging 10 the pfota1oa II is found
ia the blood ia casos u Texas fever
and it also exists iu the blood Of im.
une animals. Tile 3fa history Of this
parasite IS uot determined
h some respects lt resembles Tie
malaual parasite Of man hut rs
stages al development as well known
as those 81 The maaral microwm-
site Yet some things are known ol
IS form and life history ia the red
blood ceils ID sattle and la tbe plasma
OF the bl0ud The changes that o-
cur in tie blood are sery chafacteris.
tie lu a ease Of Texas fever
Red blood cells in great nGmbara are
DESTROYED bs the parasite This
Is determined by actual cognt 90 The
red blood cells lea a definite quantity
OF blood the test being madu before
during and after or following the ie-
yer. tie red blood cells being reduced
about oueiourth
As associated with. or asa rcsalf ot
the great loss of red blood cells anl-
mis- tl4o red cells Will vary In size
and shape
The United States government has
esta0,islisa q quarantine iila which Is
dxed Tor the regulation OF Interstate
trade Ia cattle This quarantine line
and the fact that all northern bred
cattle shipped into tie south have
Texas fever have led many people %
believe that Texas fever occurs 1ulY
lu northern bred cattle, and never 10
the native cattle Of the south But
IL has been proven beyond a doubt
that calves are not born immane 10
Texas fever even though their dams
are Immune In truth it IS very
probable THAT an cattle are born slls-
cepga nle 20 fexas fever and onlF ac-
quifa lmmn nlty by having one or
more attacks u the fever,
The micro parasite ia the blood Of
the dam cannot pass into the fFtus in
the uterus because the blood be- the
circulation af The mother does not
pass directly into the circulation of
the fptas The sefur q The blood OF
the mother passes through mem.
cranes into tie circulation q the fs-
tus sud if IS very propable that tie
mieEo.pausite does not pass through
the membranes Moreover blood Sc
rum contains very few oi the micro
parasites
The calves that are born Of immune
cows and live IN tiek Infested lots or
pastures. acquire Immunity while
young hY having such mild attack
Of the fever that e IS not observed
Possibly complete Immunity is anly
acsnised bg two of more mild attacks
that appear as the succeeding bFouds
of ticks lu0cuate them
Some ii the immane COWS escape
infestatlun and consequently escape
incubation When fall grown 0r
several years I'D. they may be taken
into tlek Infested pasture or thc
ticks mas be hfosght q them bg ln.
Producing new cattle into the herd
then they mas die 81 Texas fever
The southern cattle tick R8opiilus
Anulatus Bowls IS said % be a "a.
tive 81 northern Africa and teaehed
the southern states by way Of spain
south Americf. Central America and
Mexico The lie history oi this tick,
as described BY Cooper Curtitis Isl
given as follows
The large female tick tie one 80
easily observed on cattle drops % The
ground when flled with blood from
is host, hides ia some secluded place
lays or deposits from 1900 70 5000
eggs and then dies
TIE iaeubatiun period. or time 70.
quired for the eggs 70 hatch viii vary
{ rom Il to IS days. the length ot time
depending upon varying conditions uf
temperature and moisture These
young ticks crawl or climb upon
grass, weeds Or any object near The
place Of Matching. Cattle passIng
through the grass o. weeds wiil be
..laHs