PlantFunRapeseed Toxic?
Toxic compounds include SMCO (inactivated by drying/ensiling) and glucosinolates (stable when dried, converted to harmful derivatives in the gut)
Poisoning most often occurs after unbalanced feeding of raw green plant material or seed byproducts to livestock
Low-glucosinolate, zero-erucic acid (00) varieties have significantly reduced toxicity risk for feed use
FAQ
Is Rapeseed toxic to Humans?
No confirmed acute human toxicity cases reported; excessive consumption may cause mild gastrointestinal irritation (Low)
Is Rapeseed toxic to Cats?
No specific cat toxicity data available; monitor for salivation or diarrhea if large amounts are ingested (Low)
Is Rapeseed toxic to Dogs?
No specific dog toxicity data available; monitor for abdominal pain or loose stools after accidental ingestion (Low)
Is Rapeseed toxic to Horses?
Large or prolonged consumption may cause gastrointestinal distress, red/brown urine, or respiratory issues (Moderate)
Toxicity Details
No confirmed acute human toxicity cases reported; excessive consumption may cause mild gastrointestinal irritation
No specific cat toxicity data available; monitor for salivation or diarrhea if large amounts are ingested
No specific dog toxicity data available; monitor for abdominal pain or loose stools after accidental ingestion
Large or prolonged consumption may cause gastrointestinal distress, red/brown urine, or respiratory issues
Toxicity Snapshot
First Aid & Prevention
First 30 Minutes
- • Remove any remaining rapeseed/rapeseed byproducts from access to the affected person or animal
- • For human ingestion of large quantities, contact poison control immediately for decontamination guidance
- • For animals, withhold all Brassica-containing feed and monitor breathing, pulse and stool output closely
Contact Vet Immediately
- • Presence of bloody diarrhea, colic, or difficulty breathing after ingestion
- • Observation of red or brown urine (hemoglobinuria) in grazing or feed animals
- • Development of neurological symptoms including disorientation, staggering, or vision loss
Prevention
- • Graze or feed green rapeseed only prior to its flowering stage
- • Administer rapeseed cake only in dry form, and avoid combining with other Brassica feed ingredients
- • Prioritize use of low-glucosinolate, zero-erucic acid (00) rapeseed varieties for animal feed applications
Treatment & Prognosis
- • Gastrointestinal decontamination (e.g. activated charcoal administration) as clinically indicated
- • Symptomatic supportive care including fluid replacement for diarrhea, and respiratory support for dyspnea as needed
Professional Toxicology
• SMCO (anemia-causing factor) is inactivated by drying or ensiling of the plant material
• Glucosinolates are converted to toxic derivatives (isothiocyanates, nitriles, thiocyanates) by damaged plant tissue or gut flora, and remain stable even after drying
• Nitrates accumulated in green plant parts contribute to toxicity in grazing livestock
Information from CliniTox veterinary text.
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Data Sources
This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.