Ferula communis (common ferula, feshook, giant fennel). Related species: F. ferulago, F. glaucosa F. foetida (Asa fetida), F. galbaniflua (Galbanum). A member of the plant family UMBELLIFERAE. A very tall plant, with a solid stem bearing greyish leaves with a soft felt-like covering of hairs. Large inflorescences of pale yellow flowers and thin, flat, oval fruits (Mediterranean region).


[affected.gif] Animals most affected
Sheep, (cattle, pigs).


[etiology.gif]
Etiology
Ingestion of contaminated fodder (rarely fresh plant material).



[toxic.gif]
Toxicity
Contains an irritant, rubefacient sap (a latex) and a toxic principle which reduces blood prothrombin levels and precipitates a hypothrombinaemia.
The whole plant is toxic during its growing phase (the roots are the most poisonous part).
Oral doses are not known.
TD sheep 2.5-5 g/kg per day over a period of 5 weeks (experimental data)

     


[clinical.gif] Clinical features

In sheep


[lesions.gif] Lesions


[treatm~1.gif] Treatment
No antidote. Symptomatic care only: