Pteridium esculentum, Toxicity, Poisonous plants, Cattle
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THE ingestion of bracken fern causes the death of numbers of young cattle in the South-West of Western Australia every year.
Early experimental work in the United Kingdom demonstrated that bracken contained an anti-Vitamin Bl factor called thiaminase which was thought to be the cause of the poisoning, but later work indicated that a bone marrow poisoning, not yet chemically identified, was responsible.
Lewis, P B.
"Bracken poisoning in cattle,"
Journal of the Department of Agriculture, Western Australia, Series 4: Vol. 1:
7, Article 17.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture4/vol1/iss7/17