Sarcosporidiosis is a zoonotic disease in domestic animals caused by sarcocystis sp., a cyst forming
coccidian parasite with obligatory two host life cycle involving carnivorous as a definitive host and
herbivorous or omnivorous as an intermediate host. This work was carried out to study the occurrence of
sarcocystis sp., in different abattoirs of Cairo and Giza governorates, Egypt. A total of 103 slaughtered cattle
and buffaloes were examined for the presence of either macroscopic or microscopic sarcocysts using naked eye
examination and peptic digestion and histological examination for detecting bradyzoites. Of 61 cattle examined
in abattoirs, 37 were found to be infected, with an overall prevalence 60%, while of 42 buffaloes examined in
abattoirs, 29 were found to be infected, with an overall 69%. The results proved higher occurrence rate of
Sarcocyst in both cattle and buffaloes.