Etiology:
Listeria
monocytogenes. Gram positive, motile, non-spore-forming coccobacillus
General:
Occurs sporadically as an epizootic in rabbits.
Clinical signs
Pathogenesis:
This organism has tropism for the uterus
and placenta.
-Characterized
by depression, anorexia and fever, abortions in pregnant and sudden death in
does in late gestation.
- Infected
newborn kits may develop systemic disease, may have stunted growth and/or
develop
meningoencephalitis.
-Nervous
disorder as torticollis, opisthotonous and convulsion
P.M: Macro
Stillbirths,
dead fetus in uterus, Multiple necrotic foci in the liver and spleen;
lymphadenopathy;
ecchymoses; acute metritis; hydrothorax; ascites; and anasarca straw colored
fluid in peritoneal cavity, visceral congestion.
Micro:
Coagulative necrosis with polymorphonuclear cell infiltration.
Transmission:
Ingestion
(contaminated feed and water are possible sources) and transplacental
infection.
Diagnosis: Bacterial culture.
D.D: Pasterullosis, Salmonella
Treatment: 1-Vet.Biosecurity 2-Tetracycline.