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frontiers in veterinary science
frontiers in veterinary science
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Abstract: |
Cystic echinococcosis has been considered one of the major parasitic zoonoses
which is associated with severe economic losses. The present study was undertaken
to investigate the occurrence, organ distribution, cyst fertility, and viability of cystic
echinococcosis in slaughtered camels and cattle from various abattoirs in Assiut
Governorate, Egypt. The work also involved morphological, morphometric, and
molecular identification of the parasite. The occurrence of hydatid cysts was investigated
in total number of 100 lungs of camels and 574 liver and lungs of cattle admitted to
three slaughterhouses at Assiut Governorate, Egypt. Moreover, several individual variable
factors, including organ involvement, age, sex, and hydatid cyst characteristics, were
studied to identify their possible association with the occurrence of the disease. Genomic
DNA was extracted from the hydatid cysts, followed by molecular identification of the
parasite through amplification of ribosomal DNA internal transcribed spacer (ITS) regions. Hydatid cysts were found in 6 camels (6%) out of 100 inspected camels, while 5 hydatid cysts (0.87%) were detected in a total number of 574 cattle examined. The parasite was detected exclusively in lungs of camels, while lungs were the main organ infected by the parasite in cattle and one hydatid cyst was found in the liver (0.17%). In camel, 66.7, 16.65, and 16.65%of detected cysts were fertile, sterile, and calcified, respectively, while in cattle, these percentages were 60, 20, and 20%, respectively. None of the studied variable factors were significantly associated with the occurrence of the disease in camels, with the exception that all cysts were found in the lung. Conversely, we found a significant association (P < 0.05) between the age and sex of the slaughtered cattle and the occurrence of hydatid cysts. In this respect, the rate of infection was higher in female
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