Cynanchum Spp (Bobbejaantou)
By Dr Mackie Hobson BSc(Agric),BVSc

Friday, 2nd October 2020

‘Bobbejaantou’ causes hypersensitivity, ataxia, seizures and paralysis. Also called ‘Krampsiekte’

Cynanchum is a climbing plant that is palatable.

The lethal dose of plant material is 4g/Kg


Clinical signs:

Early signs include a wide stance, legs sometimes crossed.  They tremble and stagger about and fall, becoming recumbent with seizures. Cattle often appear to walk on tip-toes with an arched back.


May be in lateral recumbency for 1-7 days and may have seizures. Head pulled back or between legs, lips drawn back and nystagmus occurs



No effective treatment

The poisoning can be confused with ‘krimpsiekte’ which is more paretic, Tetanus, Heartwater and sarcostemma viminale (‘Melktou’)



Plant Poisonings and Mycotoxicoses of livestock in Southern Africa (Kellerman, Coetzer, Naude)

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