Consumption of Low Larkspur (Delphinium nuttallianum) by Grazing Sheep
Low larkspur (Delphinium nuttallianum Pritz.) poisoning causes serious economic loss to livestock producers that graze cattle on foothill and mountain ranges in western North America. In general, all Delphinium spp. are five times less toxic to sheep than to cattle. Because low larkspurs are less to...
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| Veröffentlicht in: | Rangeland ecology & management 2010-03, Vol.63 (2), p.263-266 |
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| creator | Pfister, J. A. Gardner, D. R. Panter, K. E. |
| description | Low larkspur (Delphinium nuttallianum Pritz.) poisoning causes serious economic loss to livestock producers that graze cattle on foothill and mountain ranges in western North America. In general, all Delphinium spp. are five times less toxic to sheep than to cattle. Because low larkspurs are less toxic to sheep than cattle, grazing sheep before cattle on rangelands with dense populations of low larkspur can reduce larkspur density and risk of poisoning to grazing cattle. All previous published work on sheep and larkspur interactions has involved tall larkspurs. This series of studies was conducted to determine if sheep would consume sufficient low larkspur to reduce subsequent risk to cattle. Four summer trials were conducted in Collbran, Colorado, and Soda Springs, Idaho on pastures with dense (> 9 plants · m−2) low larkspur populations. In all trials, sheep ate very little low larkspur ( |
| doi_str_mv | 10.2111/REM-D-09-00084.1 |
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A. ; Gardner, D. R. ; Panter, K. E.</creator><creatorcontrib>Pfister, J. A. ; Gardner, D. R. ; Panter, K. E.</creatorcontrib><description>Low larkspur (Delphinium nuttallianum Pritz.) poisoning causes serious economic loss to livestock producers that graze cattle on foothill and mountain ranges in western North America. In general, all Delphinium spp. are five times less toxic to sheep than to cattle. Because low larkspurs are less toxic to sheep than cattle, grazing sheep before cattle on rangelands with dense populations of low larkspur can reduce larkspur density and risk of poisoning to grazing cattle. All previous published work on sheep and larkspur interactions has involved tall larkspurs. This series of studies was conducted to determine if sheep would consume sufficient low larkspur to reduce subsequent risk to cattle. Four summer trials were conducted in Collbran, Colorado, and Soda Springs, Idaho on pastures with dense (> 9 plants · m−2) low larkspur populations. In all trials, sheep ate very little low larkspur (< 0.5% of bites). During one final trial using high sheep density (two sheep · 0.015 ha−1 for 9 d), sheep consumed little low larkspur, but animals appeared to trample much of the low larkspur. Toxic alkaloid concentrations in low larkspur ranged from 1.1 mg · g−1 to 1.6 mg · g−1 in all trials. The use of sheep to graze low larkspurs to reduce subsequent consumption by grazing cattle does not appear to be a viable option.</description><identifier>ISSN: 1550-7424</identifier><identifier>ISSN: 1551-5028</identifier><identifier>EISSN: 1551-5028</identifier><identifier>DOI: 10.2111/REM-D-09-00084.1</identifier><language>eng</language><publisher>Rangeland Ecology & Management, P.O. Box 7065, Lawrence, KS 66044: Society for Range Management</publisher><subject>Alkaloids ; Animals ; Cattle ; Consumption ; Delphinium ; Delphinium nuttallianum ; diet selection ; Experimentation ; feed intake ; feeding preferences ; Flowers & plants ; food animals ; Grazing ; Influence ; larkspur ; Pastures ; plant density ; Plants ; Poisoning ; poisonous plants ; Research Notes ; risk reduction ; Sheep ; stocking rate ; Studies ; Toxicity</subject><ispartof>Rangeland ecology & management, 2010-03, Vol.63 (2), p.263-266</ispartof><rights>Society for Range Management</rights><rights>2010 Society for Range Management</rights><rights>Copyright 2010 Society for Range Management</rights><rights>Copyright Allen Press Publishing Services Mar 2010</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b512t-11571af9f2ee85d8cc80d0f2ff6771d6a1f0cda83c534f19b6efd7ed67ee75ab3</citedby><cites>FETCH-LOGICAL-b512t-11571af9f2ee85d8cc80d0f2ff6771d6a1f0cda83c534f19b6efd7ed67ee75ab3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://bioone.org/doi/pdf/10.2111/REM-D-09-00084.1$$EPDF$$P50$$Gbioone$$H</linktopdf><link.rule.ids>314,776,780,26955,27901,27902,52338</link.rule.ids></links><search><creatorcontrib>Pfister, J. A.</creatorcontrib><creatorcontrib>Gardner, D. R.</creatorcontrib><creatorcontrib>Panter, K. E.</creatorcontrib><title>Consumption of Low Larkspur (Delphinium nuttallianum) by Grazing Sheep</title><title>Rangeland ecology & management</title><description>Low larkspur (Delphinium nuttallianum Pritz.) poisoning causes serious economic loss to livestock producers that graze cattle on foothill and mountain ranges in western North America. In general, all Delphinium spp. are five times less toxic to sheep than to cattle. Because low larkspurs are less toxic to sheep than cattle, grazing sheep before cattle on rangelands with dense populations of low larkspur can reduce larkspur density and risk of poisoning to grazing cattle. All previous published work on sheep and larkspur interactions has involved tall larkspurs. This series of studies was conducted to determine if sheep would consume sufficient low larkspur to reduce subsequent risk to cattle. Four summer trials were conducted in Collbran, Colorado, and Soda Springs, Idaho on pastures with dense (> 9 plants · m−2) low larkspur populations. In all trials, sheep ate very little low larkspur (< 0.5% of bites). During one final trial using high sheep density (two sheep · 0.015 ha−1 for 9 d), sheep consumed little low larkspur, but animals appeared to trample much of the low larkspur. Toxic alkaloid concentrations in low larkspur ranged from 1.1 mg · g−1 to 1.6 mg · g−1 in all trials. The use of sheep to graze low larkspurs to reduce subsequent consumption by grazing cattle does not appear to be a viable option.</description><subject>Alkaloids</subject><subject>Animals</subject><subject>Cattle</subject><subject>Consumption</subject><subject>Delphinium</subject><subject>Delphinium nuttallianum</subject><subject>diet selection</subject><subject>Experimentation</subject><subject>feed intake</subject><subject>feeding preferences</subject><subject>Flowers & plants</subject><subject>food animals</subject><subject>Grazing</subject><subject>Influence</subject><subject>larkspur</subject><subject>Pastures</subject><subject>plant density</subject><subject>Plants</subject><subject>Poisoning</subject><subject>poisonous plants</subject><subject>Research Notes</subject><subject>risk reduction</subject><subject>Sheep</subject><subject>stocking rate</subject><subject>Studies</subject><subject>Toxicity</subject><issn>1550-7424</issn><issn>1551-5028</issn><issn>1551-5028</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNqFkU1v1DAQhiMEEqVw54KIuFAOWWac-GO5od22IC1CovRsOcm49ZLYqZ1QlV9PtkEcONDTjDTPO19vlr1EWDFEfP_t9EuxLWBdAICqVvgoO0LOseDA1OP7HApZsepp9iylPUApEOVRdrYJPk39MLrg82DzXbjNdyb-SMMU85MtdcO1827qcz-No-k6Z_zUv8vru_w8ml_OX-UX10TD8-yJNV2iF3_icXZ5dvp986nYfT3_vPm4K2qObCwQuURj15YRKd6qplHQgmXWCimxFQYtNK1RZcPLyuK6FmRbSa2QRJKbujzO3i59hxhuJkqj7l1qqOuMpzAlrWSFcq1U-TDJhRRKCTWTb_4h92GKfj5DM2RQclUdIFigJoaUIlk9RNebeKcR9MEAPRugtxrW-t4AjbPk1SLZpzHEv3wFAvg8ea6_XurWBG2uokv68oIBloCKVVwcOnxYCJpf-tNR1Klx5BtqXaRm1G1w_xu_WsS1C8HTw_v-Bv5vrOY</recordid><startdate>20100301</startdate><enddate>20100301</enddate><creator>Pfister, J. A.</creator><creator>Gardner, D. R.</creator><creator>Panter, K. E.</creator><general>Society for Range Management</general><general>Elsevier Inc</general><general>Allen Press Publishing Services</general><general>Elsevier Limited</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope></search><sort><creationdate>20100301</creationdate><title>Consumption of Low Larkspur (Delphinium nuttallianum) by Grazing Sheep</title><author>Pfister, J. A. ; Gardner, D. R. ; Panter, K. E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-b512t-11571af9f2ee85d8cc80d0f2ff6771d6a1f0cda83c534f19b6efd7ed67ee75ab3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Alkaloids</topic><topic>Animals</topic><topic>Cattle</topic><topic>Consumption</topic><topic>Delphinium</topic><topic>Delphinium nuttallianum</topic><topic>diet selection</topic><topic>Experimentation</topic><topic>feed intake</topic><topic>feeding preferences</topic><topic>Flowers & plants</topic><topic>food animals</topic><topic>Grazing</topic><topic>Influence</topic><topic>larkspur</topic><topic>Pastures</topic><topic>plant density</topic><topic>Plants</topic><topic>Poisoning</topic><topic>poisonous plants</topic><topic>Research Notes</topic><topic>risk reduction</topic><topic>Sheep</topic><topic>stocking rate</topic><topic>Studies</topic><topic>Toxicity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pfister, J. A.</creatorcontrib><creatorcontrib>Gardner, D. R.</creatorcontrib><creatorcontrib>Panter, K. E.</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><jtitle>Rangeland ecology & management</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pfister, J. A.</au><au>Gardner, D. R.</au><au>Panter, K. E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Consumption of Low Larkspur (Delphinium nuttallianum) by Grazing Sheep</atitle><jtitle>Rangeland ecology & management</jtitle><date>2010-03-01</date><risdate>2010</risdate><volume>63</volume><issue>2</issue><spage>263</spage><epage>266</epage><pages>263-266</pages><issn>1550-7424</issn><issn>1551-5028</issn><eissn>1551-5028</eissn><abstract>Low larkspur (Delphinium nuttallianum Pritz.) poisoning causes serious economic loss to livestock producers that graze cattle on foothill and mountain ranges in western North America. In general, all Delphinium spp. are five times less toxic to sheep than to cattle. Because low larkspurs are less toxic to sheep than cattle, grazing sheep before cattle on rangelands with dense populations of low larkspur can reduce larkspur density and risk of poisoning to grazing cattle. All previous published work on sheep and larkspur interactions has involved tall larkspurs. This series of studies was conducted to determine if sheep would consume sufficient low larkspur to reduce subsequent risk to cattle. Four summer trials were conducted in Collbran, Colorado, and Soda Springs, Idaho on pastures with dense (> 9 plants · m−2) low larkspur populations. In all trials, sheep ate very little low larkspur (< 0.5% of bites). During one final trial using high sheep density (two sheep · 0.015 ha−1 for 9 d), sheep consumed little low larkspur, but animals appeared to trample much of the low larkspur. Toxic alkaloid concentrations in low larkspur ranged from 1.1 mg · g−1 to 1.6 mg · g−1 in all trials. The use of sheep to graze low larkspurs to reduce subsequent consumption by grazing cattle does not appear to be a viable option.</abstract><cop>Rangeland Ecology & Management, P.O. Box 7065, Lawrence, KS 66044</cop><pub>Society for Range Management</pub><doi>10.2111/REM-D-09-00084.1</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| source | Alma/SFX Local Collection; BioOne Complete |
| subjects | Alkaloids Animals Cattle Consumption Delphinium Delphinium nuttallianum diet selection Experimentation feed intake feeding preferences Flowers & plants food animals Grazing Influence larkspur Pastures plant density Plants Poisoning poisonous plants Research Notes risk reduction Sheep stocking rate Studies Toxicity |
| title | Consumption of Low Larkspur (Delphinium nuttallianum) by Grazing Sheep |
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