Late Season Toxic Alkaloid Concentrations in Tall Larkspur (Delphinium spp.)
نویسندگان
چکیده
منابع مشابه
Toxic Alkaloid Concentrations in Delphinium nuttallianum, Delphinium andersonii, and Delphinium geyeri in the Intermountain Region
Low larkspurs (Delphinium nuttalliunum Pritz., Delphinium andersonii Gray) and plains larkspur (Delphinium geyeri Greene) often poison cattle grazing on western North American rangelands. The dominant toxic alkaloid in larkspur is methyllycaconitine (MLA); other very toxic alkaloids in low and plains larkspurs are nudicauline and geyerline. Toxic alkaloid concentrations in larkspur near or abov...
متن کاملInfluence of 7,8-methylenedioxylycoctonine-type alkaloids on the toxic effects associated with ingestion of tall larkspur (Delphinium spp) in cattle.
OBJECTIVE To determine the contribution of 7,8-methylenedioxylycoctonine (MDL)-type alkaloids to the toxic effects of tall larkspur (Delphinium spp) consumption in cattle. ANIMALS Sixteen 2-year-old Angus steers. PROCEDURES Plant material from 3 populations of tall larkspur that contained different concentration ratios of MDL-type-to-N-(methylsuccinimido) anthranoyllycoctonine (MSAL)-type a...
متن کاملAdverse Effects of Larkspur (Delphinium spp.) on Cattle
There are numerous species of larkspur (Delphinium spp.) in North America. Larkspurs are a major cause of cattle losses on western ranges in the USA, especially on foothill and mountain rangelands. The toxicity of larkspur species is due to various norditerpenoid alkaloids. In this article, we review the current knowledge regarding larkspur ecology and distribution, analytical technologies to s...
متن کاملAlkaloid levels in Duncecap (Delphinium occidentale) and Tall larkspur (D. barbeyi) grown in reciprocal gardens: separating genetic from environmental influences.
The objective of this study was to determine whether differences in toxicity between Tall larkspur (Delphinium barbeyi) and Duncecap larkspur (D. occidentale) were genetically inherent within the species, or due to environmental influences unique to the different regions where they grow. There was no difference in the concentration of the toxic alkaloids between the two species when grown in co...
متن کاملThe effect of administering multiple doses of tall larkspur (Delphinium barbeyi) to cattle.
Larkspurs ( spp.) are one of the most serious toxic plant problems on foothill and mountain rangelands in the western United States. A considerable amount of research has been conducted over the years in both field and pen settings. The results of these research efforts have significantly increased our understanding of the poisoning of cattle by larkspurs. However, most of the pen studies condu...
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 2000
ISSN: 0022-409X
DOI: 10.2307/4003441