| Abstract: |
During the period extended from January, 1995 till December, 1995,the mesenteric lymph nodes of 1881 animal (868 camel, 317 cattle, 316sheep and 380 goat) from three localities in Egypt (Cairo abattoir, El-Sayeda Zeinab (Cairo), El-Zagazig abattoir and Bilbeis region (Sharkia) were examined for Linguatula serrata infestation. The present study revealed that 106 (5.6%) out of 1881 examinenymphs. The highest infestation rate was recorded in goats (7.6%) followedby camels (7.4%), cattle (2.5%) and then sheep (1.6%).High infestation rate (9.5%) was recorded in goats examined at Bilbeisregion, (Sharkia), while, 76 examined goat at El-Zagazig abattoir (Sharkia)were free from this parasite. On the other hand, (6.3%) of examined sheep atBilbeis region (Sharkia) harboured L. serrata nymphs, while, only (0.4%) ofexamined sheep at El-Zagazig abattoir (Sharkia) were positive.The seasonal dynamics of infestation with L. serrata nymphs amongexamined animals showed that the highest infestation rate was observedduring summer (6.6%) followed by spring (6%) then winter (5.6%) and autumn (4.3%).Regarding the age of susceptibility of different examined animals forinfestation with L. serrata nymphs, high infestation rate (6.8%) wasobserved in older animals, while, only (2.8%) of young animals harbouredthis parasite.The morphological characteristic features of L serrata nymphs weredescribed in details using both light and scanning electron microscopes.Also, the histopathological effects of this parasite nymphs on the infestedlymph nodes were discussed.
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