الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Protozoa seemed to exhibit a well defined condition as a major world food
producing animal health problem.
A total of 300 blood samples and 2632 samples of internal organs and muscles
collected from 329 animals (70 buffaloes, 52 cattle, 59 camels, 46 sheep, 52 goats
and 50 calves) slaughtered at Kalubia abattoirs. were examined for presence of
protozoa moreover, a total of 64 faecal samples were collected from stray cats at
abattoirs in question were also examined.
Macroscopic examination revealed that SaI”cocystisfusiformis was only found
in examined oesophageal samples of buffaloe (40%) and cattle (38%).
Microscopic Sarcocystis were not detected by impression smears in all
examined samples of different species.
The use of digestion technique clar’ified that regardless of examined organs,
cattle constitltted the highest animals species infested with Sarcocystis (78.85%) while
buffaloe represented the lowest infested animal species (62.86%). No Sarcocvstis
were detected in all the examined samples collected from calves.
The obtained results revealed that the highest infested samples of the
examined buffaloes, cattle and camels with Sarcocystis were those taken from
oesophagus (51.43% , 65.38% and 42.47% , respectively). Moreover, the examined
heart samples for sheep (69.57%) and muscles of fore quarter for goats (75%) were
the highest infested samples with Sarcocystis. No Sarcocystis were detected in the
examined samples collected from lung of cattle, liver of camels and goats. All the
examined samples of brain were free from Sm-cocyst is .
Histopathological examination showed that all the examined samples of brain,
lung Liver were free from microscopic Sarcocystis. Sarcocystis were detected in all
examined samples of heart, diaphragm, oesophagus and muscles of fore quarter of
slaughtered animals at varying percentages.
Toxoplasma organisms were not detected in all the examined samples of
different animals by impression smears, digestion technique or histopathologically.
Prevalence of Toxoplasma Oocysts among examined cats was 18.75% •
The highest incidence of seroposlt ive against Toxoplasma antibodies by using
dye test was observed in sheep (42%) followed by goats (34%), buffaloes (28%) and
camels (10%), while all the examined sera of cattle and calves were seronegative
against Toxoplasma antibodies. The incidence of titers (’14 , ’/16 and I,..) were given.
Distribution of titers showed that the sum of low and mild titers was greated than
the moderate titers.
Toxoplasma cysts could survive freezing at -20 oC for 2 hr, therefore, cats fed
on that meat could shed Oocysts in their faeces. All infectious stages of Toxoplasma
were rendered non infective by exposure to a temperature of 40 ”C for 1.5 hr, 6O”C
for 5 min or 70 ”C for 2 min.
Importance of protozoa as well as suggested hygienic measures to control
toxoplasmosis were discussed.