الفهرس 
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Abstract
Sarcocystis fusiformis , Hydatid cysts and Cysticercus bovis are considered to be serious problems for both public health and the livestock economy. The current study aimed to determine their prevalence in slaughtered animals at Menofia governorate. Physical examination of 1916 slaughtered animals at different abattoirs of Menofia governorate was carried out from September 2016 to August 2017 to determine the prevalence of recovered parasites. Histopathological examination and molecular analysis were performed on the infected tissues. The results reported that 20.5% of the examined animals were infected with S. fusiformis. The infection rate of S. fusiformis was 85.96% and 0.1% in buffaloes and cattle respectively without any infections recorded in camels, sheep and goats. Sarcocystis infections increased with increasing the age of animals. The highest infection was recorded in winter and spring at 33.3% and 27.13% respectively. The total infection rate of Hydatid cyst was 3.6% with (29.18% in camels and 1.75% in buffaloes). C. bovis was only recorded in single case in a buffalo heart older than 5 years during autumn. Molecular analysis of Sarcocystis and meat products revealed that meat products contained the same Sarcocystis species. In conclusion S. fusiformis, Hydatid cysts and C. bovis prevailed at Menofia governorate with considerable percentages that require more molecular studies to determine their genes and putting strategies to control stray dogs and cats near the abattoirs and efficient condemnation of affected organs.