Fagopyrum esculenturn (brank, beechwheat, sarrasin, saracen corn, ble'
noir). A member of the plant family POLYGONACEAB. Cultivated herbaceous plant, with
triangular leaves, knotted stems, spreading panicles white or pale pink dimorphic,
perfumed flowers. The fruit is a small, three-sided nut (akene) with a dark brown,
tough rind enclosing a kernel or seed.
Animals most affected
Sheep, cattle, (goats, pigs, horses).
Grazing of the plant, in particular the flower hears; less commonly, straw made from
the harvested plant.
Contains a toxic principle, the structure which has not been fully established, which
causes photosensitization. Toxic doses not known.
There is a latent period of several days before clinical signs present. Effects then
appear within a few minutes of the animal being exposed to sunlight:
congestion, oedema and redness of the face, ears and vulva;
vesicular eruptions with pruritus and scabby crusts;
watering eyes, nasal discharge;
neurological signs may present: ataxia, dizziness, convulsions;
death may occur.
primarily dermal lesions;
degeneration of the liver and kidneys.
place animals in a shady place until the toxin has been excreted (5-7 days);
local, topical treatment of cutaneous lesions: cicatricial creams, antibiotics;
antihistamines, desensitizers, dextrose-saline if indicated.