الفهرس 
Introduction and aim of the workOnly 14 pages are availabe for public view
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Abstract
For parasitological evaluation of the parasites infesting rabbits and for evaluation of the damages which resulted as a sequence of this infestation, a total of 300 rabbits (250 of foreign bree7ds and 50 of native breed) were examined for the external parasites; 150 faecal samples; 270 slaughtered rabbits; 150 gall bladers; 150 organs (liver; spleen and kidney) as well as 150 gastrointestinal tracts, were collected and examined by different methods for detection of internal parasites.
1-The external examination revealed that (30.4%) of the foreigh rabbit breeds as well as (36%) of the native rabbit breed, were infested with the ear mite, Psoroptes cuniculi. which tended to infest the adult rabbits in the foreign breeds (53.7%) than the younger rabbits (4.2%) of the same breeds, this difference was not observed between adults and youngs of the native rabbits breed. The most characterestic lesions accompanied the infestation, were the presence of brownish crusts full of the ears accompanied by itching; loss of appetite and emaciation.
2-About (16.8%) of the foreign rabbit breeds and (38%) of the native breed examined, were infested with body mites and the incidence was higher in the adults of the foreign breeds (24.2%) than the youngs (8.4) without distinct difference between adults and youngs of the native rabbits. Itching; anorexia and emaciation were the symptomes, observed during the infestation.
3-Only four rabbits of the foreign breeds (1.6%) and (24%) of the native breed showed the infestation with fleas, without severe characteristic lesions or manifestations, except itching and emaciation.
4-(35%) of the foreign breeds and (46%) of the native breeds, proved to be harbouring different species of coccidia, with observable variations between adults and youngs, (50%) to (20%) in the foreign breeds and (53.3%) to (42.8%) in native breed, respectively. The observable manifestations were only in the youngs as contineous diarrhoea; anorexia; growth retardation with high incidence of mortality. Haemorhagic enteritis and watery contents of the intestine were the most observable lesions during PM of the dead rabbits, as well as hepatomegally with greyish spots on the liver surface and distinct gall bladder in case of infestation with hepatic coccidiosis which was detected in (37%) and (40%) in the foreign and native rabbits, respectively.
5-The research proved the presence of cysts, each in the size of pea, grouped to form a grap like, in the abdominal cavity of (9%) of the foreign rabbit breeds and (10%) of the native rabbit breed. These cysts were examined microscopically and proved to be Cysticercus pisiformis, the larval stage of Taenia pisiforrnis which lives in the intestine of dogs. Slight difference was observed between the incidence of the infestation in adults and that in the youngs in both native and foreigh breeds. No observable symptomes were seen on the life animals, except sudden adeaths between the youngs and the cysts were discovered only during PM of the dead or slaughtered rabbits with the presence of Zigzage lines on the hepatic which surface, believed to be the result of the larval migration through the hepatic tissue.
6-The presence of Passilorus ambiguus nematode was recorded in (72%) of the foreign breeds and in (20%) of the native breed.
7-Various examinations failled to detect Cryptosporidium: blood parasites; Toxoplasma gondi and Encephalitozoon cuniculi. in all of the examined rabbits. 8-The economic and public health importance of the recorded parasites as well as some proposed recommendations were also discussed.