Production Animal Clinical Toxicology

Plants | Epidemiology | Pathogenesis | Clinical Signs | Necropsy | Diagnosis | Treatment

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Plants

Cestrum parqui - green cestrum

Epidemiology

• mainly cattle and poultry affected; sheep, pigs and cattle also
• feed needs to be scarce before plant eaten

Pathogenesis

• toxin not known

Clinical Signs

• sudden death
• intense abdominal pain
• alternating depression and mania; paralysis, coma, death

Necropsy

• centrilobular hepatic necrosis - acute dark swollen liver
• if less acute - liver pale with reddish mottling
• portal hypertension - induces duodenal congestion and haemorrhage - causes oedema of gall bladder
• myocardial haemorrhage and serous haemorrhages
• hepatic encephalopathy - cerebral spongy degeneration

Diagnosis

• history; presence of plants

Treatment

• none