Brassica olearaceae (cole,
chou moellier). A member of the plant family CRUCIFERAE.
Animals most affected
Cattle, (sheep, goats).
Ingestion as fodder, especially if consumed in large quantities and
for prolonged periods of time.
sulphur-based heterosides: sinigroside, glucobrassicine, progoitrine,
which when hydrolysed yield thiocyanates, goitrine (antithyroid agent) and oxazolidone
(anti-growth agent in poultry) at levels of 0.6-3mg/kg DM;
an anaemia-inducing agent: S-methylcysteine-sulfoxide, 5-13
g/kg DM (principally in the flowers).
Toxicity is greatest in winter (i.e. when cabbages may be frozen) and
nitrates, totalling 1-2% DM.
Large quantities need to be ingested for
toxicity to become apparent.
Oral toxic doses not well established:
2-50 kg/day for 10-20 days
Clinical features Acute poisoning (ingestion of the flowers)