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https://hdl.handle.net/1959.11/8900
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DC Field | Value | Language |
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dc.contributor.author | Kelly, Gareth Andrew | en |
dc.contributor.author | Kahn, Lewis | en |
dc.contributor.author | Walkden-Brown, Steve W | en |
local.source.editor | Editor(s): Monduzzi Editore International Proceedings Division | en |
dc.date.accessioned | 2011-11-24T15:05:00Z | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | Proceedings of the XII International Congress of Parasitology (ICOPA) | en |
dc.identifier.isbn | 9788875875985 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/8900 | - |
dc.description.abstract | A two-year cross-over experiment investigated phenotypic resistance and resilience to gastrointestinal nematodes (worms) on production characteristics in grazing sheep. On six farms, two mobs (yearling or mixed age) of 300 or more Merino ewes were chosen at shearing in 2007. Within each mob, animals were randomly allocated to receive either normal management (challenged, n=60) or worm-free treatment (n=60) involving suppressive control using combination long acting anthelmintics. Faecal worm egg count (WEC) was measured individually every two months and greasy fleece weight (GFW) at each shearing. Treatments were swapped at shearing in 2008 and continued until shearing 2009. Sheep were placed into quartiles based on either WEC(1/3) (resistance) or GFW (resilience) distributions within their treatment groups when challenged. The effect of resistance (WEC quartile) on challenged and worm-free GFW was analysed using an appropriate general linear model followed by Tukey's HSD test while the effect of resilience (GFW quartile) was analysed by intra-quartile comparison of GFW under worm-free and normal management. More resistant sheep will have a lower requirement for anthelmintic treatment but do not exhibit higher GFW in a challenged environment (Table 1). When worm-free, the most resistant quartile had lower GFW compared to the most susceptible quartile. Increased resilience was not associated with higher WEC. Phenotypic selection for high fleece weight will not increase the need for anthelmintic treatment and improve resilience without adverse effects on worm control. | en |
dc.language | en | en |
dc.publisher | Medimond | en |
dc.relation.ispartof | Proceedings of the XII International Congress of Parasitology (ICOPA) | en |
dc.title | Worm egg count is not associated with greasy fleece weight in sheep phenotypically different for resistance or resilience to gastrointestinal nematodes | en |
dc.type | Conference Publication | en |
dc.relation.conference | ICOPA XII: 12th International Congress of Parasitology | en |
dc.subject.keywords | Veterinary Parasitology | en |
dc.subject.keywords | Animal Management | en |
local.contributor.firstname | Gareth Andrew | en |
local.contributor.firstname | Lewis | en |
local.contributor.firstname | Steve W | en |
local.subject.for2008 | 070708 Veterinary Parasitology | en |
local.subject.for2008 | 070203 Animal Management | en |
local.subject.seo2008 | 830310 Sheep - Meat | en |
local.subject.seo2008 | 830311 Sheep - Wool | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.school | Office of Faculty of Science, Ag, Business and Law | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.email | gkelly4@une.edu.au | en |
local.profile.email | lkahn3@une.edu.au | en |
local.profile.email | swalkden@une.edu.au | en |
local.output.category | E3 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | une-20110221-171224 | en |
local.date.conference | 15th - 20th August, 2010 | en |
local.conference.place | Melbourne, Australia | en |
local.publisher.place | Bologna, Italy | en |
local.identifier.runningnumber | Abstract Number: 1299 | en |
local.contributor.lastname | Kelly | en |
local.contributor.lastname | Kahn | en |
local.contributor.lastname | Walkden-Brown | en |
dc.identifier.staff | une-id:gkelly4 | en |
dc.identifier.staff | une-id:lkahn3 | en |
dc.identifier.staff | une-id:swalkden | en |
local.profile.orcid | 0000-0002-3679-4530 | en |
local.profile.orcid | 0000-0002-0638-5533 | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:9090 | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Worm egg count is not associated with greasy fleece weight in sheep phenotypically different for resistance or resilience to gastrointestinal nematodes | en |
local.output.categorydescription | E3 Extract of Scholarly Conference Publication | en |
local.relation.url | http://www.medimond.com/proceedings/moreinfo/20100815.htm | en |
local.conference.details | ICOPA XII: 12th International Congress of Parasitology, Melbourne, Australia, 15th - 20th August, 2010 | en |
local.search.author | Kelly, Gareth Andrew | en |
local.search.author | Kahn, Lewis | en |
local.search.author | Walkden-Brown, Steve W | en |
local.uneassociation | Unknown | en |
local.year.published | 2011 | en |
local.date.start | 2010-08-15 | - |
local.date.end | 2010-08-20 | - |
Appears in Collections: | Conference Publication |
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