Astragalus (A. adsurgens)
General poisoning notes:
Astragalus
adsurgens is a native herb found across western Canada. This plant has the
potential to accumulate toxic levels of selenium, which would cause symptoms in
cattle and probably other livestock. Cases of livestock poisoned by this plant
could not be found in the literature.
Nomenclature:
Scientific Name: Astragalus adsurgens Pall.
Vernacular
name(s): Astragalus (A. adsurgens)
Scientific family
name: Leguminosae
Geographic Information
Alberta, British
Columbia, Manitoba, Northwest Territories, Ontario, Saskatchewan
Toxic parts:
Leaves, stems
Notes on Toxic plant chemicals:
Astragalus
adsurgens has been found to accumulate selenium well above the minimum
amount of 5 mg/kg required for the existence of selenium poisoning in sheep and
cattle. Some plants collected in Canada contained 44 mg/kg of selenium (Davis
1986).
Toxic plant chemicals:
Selenium
Animals/Human Poisoning:
Note: When an
animal is listed without additional information, the literature (as of 1993)
contained no detailed explanation.
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