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dc.contributor.authorSutherland, R. D.
dc.contributor.authorBetteridge, K.
dc.contributor.authorFordham, R. A.
dc.contributor.authorStafford, K. J.
dc.contributor.authorCostall, D. A.
dc.date.accessioned2020-09-18T14:58:36Z
dc.date.available2020-09-18T14:58:36Z
dc.date.issued2000-07-01
dc.identifier.citationSutherland, R. D., Betteridge, K., Fordham, R. A., Stafford, K. J., & Costall, D. A. (2000). Rearing conditions for lambs may increase tansy ragwort grazing. Journal of Range Management, 53(4), 432-436.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4003756
dc.identifier.doi10.2458/azu_jrm_v53i4_sutherland
dc.identifier.urihttp://hdl.handle.net/10150/643786
dc.description.abstractGrazing by sheep is an accepted method of controlling tansy ragwort (Senecio jacobaea L.), but some flock members seldom eat it. Our objectives were to determine if pre-weaning exposure to tansy ragwort increases later consumption of the plant by lambs, and if confinement with ragwort-eating ewes after weaning facilitates ragwort eating. The sampling periods were Weeks 1, 3, and 12 following weaning. During each period grazing behavior was observed for 1-hour each day and the 24-hour reduction in ragwort volume measured on each of 4 or 5 consecutive days. Lambs exposed to ragwort before weaning removed more ragwort than ragwort-naive lambs during the first 2 sampling periods (P < 0.05). Lambs that grazed with ewes for 11 weeks following weaning ate ragwort more frequently during direct observation, than lambs without ewes during Weeks 3 and 12 (P < 0.05). The ragwort-eating of all lamb groups increased markedly between Weeks 1 and 12 (P < 0.05). This may indicate an increased ability of lambs to consume ragwort with increasing age or an acclimation period during which most lambs come to accept ragwort. Behavioral interventions aimed at increasing the consumption of weeds by lambs may need to take into account age-related differences in toxin tolerances. Exposing lambs to ragwort before weaning and grazing newly-weaned lambs with older ragwort-eating sheep after weaning may increase later ragwort-eating by lambs.
dc.language.isoen
dc.publisherSociety for Range Management
dc.relation.urlhttps://rangelands.org/
dc.rightsCopyright © Society for Range Management.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectSenecio jacobaea
dc.subjectsocial behavior
dc.subjectsocial facilitation
dc.subjectlambs
dc.subjectewes
dc.subjectweed control
dc.subjectselective grazing
dc.subjectbiomass
dc.subjectfeeding preferences
dc.subjectSenecio jacobaea
dc.subjecttraining
dc.subjectsocial facilitation
dc.titleRearing conditions for lambs may increase tansy ragwort grazing
dc.typetext
dc.typeArticle
dc.identifier.journalJournal of Range Management
dc.description.collectioninformationThe Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform August 2020
dc.source.volume53
dc.source.issue4
dc.source.beginpage432-436
refterms.dateFOA2020-09-18T14:58:39Z


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