الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
The most destructive diseases of our ani. Oil l>lea1th and the
bi ggest hinderness for successf\d production are the bl ood
parasites a d their vectors.
Piroplasmosis is a oroup of hi9hly foltal and economJ.cally
lmport~n diseases of livestock. These diseases are caused by
protozoan parasites belonqlng to Family Babesiidae and Fa i1y
Theileriidaeo,f suborder piro - pla.smidae (Levine” 1961l.
Theilerial parasit”!s affect wide ange of mammals
mainly, ruminants and are particul rly important as pathogens
of dornesti~ ettIe, sheep and goats in the tropical nd
sub ropical re9ion~.
TropicCll Theileriosis or !4edi terranean Coast Fever caused
by the tick borne protozoan parasi~~ ID~11~~igaDn~l~!~ i~ an
economic 11y import,mt disease of cattle [Dscl’1lJnko>1skr and
Luhs, 1904). The diseaSe is endemic acroas the nor hern
subtropJ.c~l and Mediter;-ranean regions fr-olil ~lorocco throu9h the
~io:ldle East and Southern USSR to the India,n subcontinent and
Chi.na {Purnell, 1978). Its distribution broadly cor.esponds to
that of it$ ixodid tick vectors of the ••enus l’lyalOll11Tla. (Koch,
1844 and 18471.
2
E9ypt is con;gidered as a heavy inf’=!c ed country l:iith
bo in h~Hedosi.5 I-lhich constitutes a c r i eical economic:
setback, because it attacks food - producim;l cattle. All
anvt ronmental cond it Iens offer the chance for th., causa t i Ii’!!
parasi e of th is infect ion to breed and flour ish (HI -Refai i alld
Micha.el, 1976}. Also, there is no c ear control system for
facin~ the infection and there is no cheap and ~ffectlve drug
fo the treatment of theileria annulata infectio” Although the
parvaquone and oxytet.racycl ioe are reported to give fair
r eeu l t.s ,
mmunization ~ith issue cu ture vaccine usin9 fresh or
cryoprServed material have been ~idely and effe~ ively used in
many ccun ~i£s where Ib~il~~iQ~nnYlata ~nreGtion is endemic
(Hal<a,1974. Pi pann, 1977 and 1981. Dashemi-Fesllarki, 1978 and
1988, Sayin, 19861. The schizont issue culture vaccine have
been prov~d to be saee rQ~all breed and ages of ca tie and the
best mea.ns to reduce te mortal i ty rate in cat Ie due to
eileriosis {Hashemi-Feslna kL 1988 and Singh si 1., 19931.
Therefore, the aim of this study is a field application
of hi9hly efficient scheme of immuni~ation by vaccination of
l”’reisian calv’es in EI-Khar9’ll. Oasis, ew Valley Governora ee as
infected ield condition with Ib~~leri~ Qnn~l~t~ schizont
cu ture vaccine (Egyptian 15 rain).