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20 February 2019   
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Poisonous Plants A-Z


Bracken - Brake - Any of the large course ferns having large fronds with spore cases on the undersides. Poisoning caused by eating the plant, it contains an enzyme, which inactivates thiamine (vitamin B1) and causes a deficiency - symptoms - progressive loss of condition and slow pulse. Later the animal loses its belly and becomes tucked and hollow in the flanks. The muscles begin to waste.
Eventually the animal reels as it walks and may have difficulty in turning. The pulse becomes rapid and week, there is staggering, unnatural stance and in extreme cases difficulty in getting up after rest. Severe muscular tremors develop, death is preceded. Treatment - Urgent veterinary treatment needed. 50-100ml. Thiamine might be administered.