'''Ragwort''' (''Senecio jacobea'') is part of the daisy family, a flowering plant with completely yellow flowerheads. It commonly grows on wasteland and grazing pastures.
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It is poisonous to livestock, when ingested over long periods of time it causes hepatotoxicity which is invariably fatal. Horses and cattle are more susceptible than sheep
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==Signalment==
==Signalment==
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===Clinical signs===
===Clinical signs===
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*Weight loss
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===Cytology===
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*Hepatic insufficiency
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*Hepatic encephalopathy
===Biopsy===
===Biopsy===
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==Hepatotoxicity==
==Hepatotoxicity==
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plant toxin ingested over a long period of time
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*livestock
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**cattle and horses are more susceptible than sheep
**livestock will not normally eat the fresh plant
**livestock will not normally eat the fresh plant
**most cases arise in horses and cattle consuming ragwort in hay or silage
**most cases arise in horses and cattle consuming ragwort in hay or silage