Listeriosis is a disease caused by the bacterium Listeria monocytogenes, which is found in silage Read the content of the note 1 , vegetation and soil.
This is a zoonotic disease, which means that animals can transmit it to humans.
For more details on the risk of infection in humans, visit the Listeriosis page in the Health section.
The disease affects cattle, goats and sheep. It also affects poultry, rabbits and rodents.
Cattle, sheep and goats display the following symptoms:
In poultry, listeriosis causes heart and liver problems as well as nervous signs. Widespread blood poisoning and death is possible in young animals.
Abortion sheet: Listeriosis in sheep and goats, Centre d’expertise en production ovine du Québec
Last update: July 15, 2025
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