Pyrrolizidine Alkaloid Liver Damage (Ragwort, Senecio etc.)

Veterinary care required

This condition belongs in veterinary diagnosis and treatment. Compounds are at most supportive.

Priority · vet & management

Immediate removal of the poison source (pasture, hay batch) and veterinary clarification (liver values, possibly biopsy/histology) come first. By the time symptoms appear, the liver damage is often already far advanced and partly irreversible — a cure cannot be promised; the vet steers the supportive treatment.

Possible causes

• · ragwort/groundsel (Senecio jacobaea/vulgaris) in the pasture or in the hay
• · hemp agrimony, comfrey, other PA-containing plants
• · overgrown/patchy pastures
• · contaminated conserved feed — PAs remain stable on drying

Supportive compounds · supplementary feed, not medication

Prevention

Consistently keep pastures free of ragwort/Senecio (remove including the root) and check hay/silage for PA-containing plants, since PAs remain stable on drying.

Equiterna's take

Equiterna classifies PA exposure as a cumulative, often unnoticed process: the liver stores no warning pain, which is why pasture and hay hygiene is the decisive lever — compounds can at most accompany a vet-treated liver damage, never replace the source of the poison.