Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/401
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dc.contributor.authorKahn, Lewisen
dc.contributor.authorKnox, MRen
dc.contributor.authorWalkden-Brown, Steve Wen
dc.contributor.authorLea, JMen
dc.date.accessioned2008-06-13T14:19:00Z-
dc.date.issued2003-
dc.identifier.citationVeterinary Parasitology, 114(1), p. 15-31en
dc.identifier.issn1873-2550en
dc.identifier.issn0304-4017en
dc.identifier.urihttps://hdl.handle.net/1959.11/401-
dc.description.abstractPeriparturient Merino ewes obtained from lines of sheep that had been selected either for increased resistance to Haemonchus contortus (R) or at random (C) were supplemented, while grazing at pasture, with either nil or 250 g/day cottonseed meal (CSM) for the 6 weeks prior to or the 6 weeks after the start of parturition. Ewes from both supplement groups had lower (mean 66% reduction) faecal egg counts (FECs) during the postpartum period and this coincided with a period of maternal body weight loss. Factors which increased the rate of maternal body weight loss, such as pregnancy and lactation status, also increased FEC. Evidence is presented that the magnitude of the periparturient rise (PPR) in FEC in grazing ewes will be greatest during periods of maternal weight loss and at these times supplementation to increase metabolisable protein (MP) supply will be most effective in increasing resistance to nematode parasites. The resistance of R ewes to nematode parasites was greater than that of ewes throughout the experiment and was sufficiently low such that anthelmintic treatment in a commercial environment may not have been required. Irrespective of actual FEC, ewes from all treatment combinations exhibited a PPR in FEC. Reduced FEC of R ewes resultedin reduced apparent pasture larval contamination after 18 weeks of continuous grazing but supplementation was ineffective in this regard. It is suggested that integrated parasite management (IPM)programs for periparturient ewes should make use of both protein supplementation and genetic selection to increase worm resistance and reduce dependency on anthelmintics for worm control.en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofVeterinary Parasitologyen
dc.titleRegulation of the resistance to nematode parasites of single-and twin-bearing Merino ewes through nutrition and genetic selectionen
dc.typeJournal Articleen
dc.identifier.doi10.1016/S0304-4017(03)00099-2en
dcterms.accessRightsUNE Greenen
dc.subject.keywordsVeterinary Parasitologyen
local.contributor.firstnameLewisen
local.contributor.firstnameMRen
local.contributor.firstnameSteve Wen
local.contributor.firstnameJMen
local.subject.for2008070708 Veterinary Parasitologyen
local.subject.seo630102 Sheep - woolen
local.profile.schoolOffice of Faculty of Science, Ag, Business and Lawen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emaillkahn3@une.edu.auen
local.profile.emailswalkden@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordpes:927en
local.publisher.placeNetherlandsen
local.format.startpage15en
local.format.endpage31en
local.identifier.scopusid0038742774en
local.peerreviewedYesen
local.identifier.volume114en
local.identifier.issue1en
local.access.fulltextYesen
local.contributor.lastnameKahnen
local.contributor.lastnameKnoxen
local.contributor.lastnameWalkden-Brownen
local.contributor.lastnameLeaen
dc.identifier.staffune-id:lkahn3en
dc.identifier.staffune-id:swalkdenen
dc.identifier.staffune-id:jlea3en
local.profile.orcid0000-0002-3679-4530en
local.profile.orcid0000-0002-0638-5533en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:405en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleRegulation of the resistance to nematode parasites of single-and twin-bearing Merino ewes through nutrition and genetic selectionen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.relation.urlhttp://www.wormboss.com.au/LivePage.aspx?pageId=371en
local.search.authorKahn, Lewisen
local.search.authorKnox, MRen
local.search.authorWalkden-Brown, Steve Wen
local.search.authorLea, JMen
local.open.fileurlhttps://rune.une.edu.au/web/retrieve/05a3ea1b-8bb7-4df6-8726-a7ea72833126en
local.uneassociationUnknownen
local.year.published2003en
local.fileurl.openhttps://rune.une.edu.au/web/retrieve/05a3ea1b-8bb7-4df6-8726-a7ea72833126en
Appears in Collections:Journal Article
School of Environmental and Rural Science
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