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https://hdl.handle.net/1959.11/7298
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DC Field | Value | Language |
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dc.contributor.author | Brien, Forbes Donald | en |
dc.contributor.author | Hebart, M L | en |
dc.contributor.author | Robertson, M W | en |
dc.contributor.author | Hinch, Geoffrey | en |
dc.contributor.author | Geenty, Kennett | en |
dc.contributor.author | Van Der Werf, Julius H | en |
dc.contributor.author | Smith, D H | en |
dc.contributor.author | Hocking Edwards, J E | en |
dc.contributor.author | Greeff, J C | en |
dc.contributor.author | Hart, K W | en |
dc.contributor.author | Refshauge, G | en |
dc.contributor.author | Bird-Gardiner, T L | en |
dc.contributor.author | Gaunt, G | en |
dc.contributor.author | Behrendt, R | en |
dc.date.accessioned | 2011-05-04T13:51:00Z | - |
dc.date.issued | 2010 | - |
dc.identifier.citation | Animal Production Science, 50(12), p. 1017-1025 | en |
dc.identifier.issn | 1836-5787 | en |
dc.identifier.issn | 1836-0939 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/7298 | - |
dc.description.abstract | Data on lamb survival and associated traits involving records from 15 192 lambs, 6308 dams and 284 sires from the Sheep CRC's Information Nucleus were studied. Lamb survival to 3 days of age and to weaning was 85 and 80%, respectively, and heritability (±s.e.) was 0.014 ± 0.010 and 0.010 ± 0.010, respectively. Of the 14 traits recorded at birth, time taken for the lamb to bleat, rectal temperature and crown–rump length had the highest genetic correlations with lamb survival to weaning (–0.43 ± 0.32, 0.56 ± 0.33 and –0.38 ± 0.36, respectively). Under selection for a multi-trait objective including net reproduction rate (but not lamb survival), survival was predicted to decline genetically by 0.25 lambs weaned per 100 lambs born.year, although this was reversed to a gain of 0.20 lambs weaned per 100 lambs born.year by including the trait in the breeding objective and using 50 half-sib and 50 progeny records per selection candidate. Accuracy of selection for lamb survival was improved to 0.735 with a selection index of lamb survival to weaning, lamb ease, birth coat score, time taken to bleat, rectal temperature and crown–rump length, with the addition of 50 half-sibs and 50 progeny records per candidate. Our results suggest that unless actively incorporated into breeding objectives, lamb survival may genetically decline; however, gains are possible with direct selection using half-sib and progeny records. The addition of indirect selection criteria for lamb survival can further improve accuracy, up to 93.4%, but requires further investigation. | en |
dc.language | en | en |
dc.publisher | CSIRO Publishing | en |
dc.relation.ispartof | Animal Production Science | en |
dc.title | Opportunities for genetic improvement of lamb survival | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.1071/AN10121 | en |
dc.subject.keywords | Genetics | en |
dc.subject.keywords | Animal Growth and Development | en |
dc.subject.keywords | Agricultural and Veterinary Sciences | en |
local.contributor.firstname | Forbes Donald | en |
local.contributor.firstname | M L | en |
local.contributor.firstname | M W | en |
local.contributor.firstname | Geoffrey | en |
local.contributor.firstname | Kennett | en |
local.contributor.firstname | Julius H | en |
local.contributor.firstname | D H | en |
local.contributor.firstname | J E | en |
local.contributor.firstname | J C | en |
local.contributor.firstname | K W | en |
local.contributor.firstname | G | en |
local.contributor.firstname | T L | en |
local.contributor.firstname | G | en |
local.contributor.firstname | R | en |
local.subject.for2008 | 060499 Genetics not elsewhere classified | en |
local.subject.for2008 | 070202 Animal Growth and Development | en |
local.subject.for2008 | 079999 Agricultural and Veterinary Sciences not elsewhere classified | en |
local.subject.seo2008 | 830310 Sheep - Meat | en |
local.subject.seo2008 | 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences | en |
local.subject.seo2008 | 830311 Sheep - Wool | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.school | School of Environmental and Rural Science | en |
local.profile.school | Administration | en |
local.profile.email | fbrien@une.edu.au | en |
local.profile.email | ghinch@une.edu.au | en |
local.profile.email | kgeenty@une.edu.au | en |
local.profile.email | jvanderw@une.edu.au | en |
local.profile.email | tbirdgar@myune.edu.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | une-20110326-11442 | en |
local.publisher.place | Australia | en |
local.format.startpage | 1017 | en |
local.format.endpage | 1025 | en |
local.identifier.scopusid | 78649584830 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 50 | en |
local.identifier.issue | 12 | en |
local.contributor.lastname | Brien | en |
local.contributor.lastname | Hebart | en |
local.contributor.lastname | Robertson | en |
local.contributor.lastname | Hinch | en |
local.contributor.lastname | Geenty | en |
local.contributor.lastname | Van Der Werf | en |
local.contributor.lastname | Smith | en |
local.contributor.lastname | Hocking Edwards | en |
local.contributor.lastname | Greeff | en |
local.contributor.lastname | Hart | en |
local.contributor.lastname | Refshauge | en |
local.contributor.lastname | Bird-Gardiner | en |
local.contributor.lastname | Gaunt | en |
local.contributor.lastname | Behrendt | en |
dc.identifier.staff | une-id:fbrien | en |
dc.identifier.staff | une-id:ghinch | en |
dc.identifier.staff | une-id:kgeenty | en |
dc.identifier.staff | une-id:jvanderw | en |
dc.identifier.staff | une-id:tbirdgar | en |
local.profile.orcid | 0000-0003-4731-865X | en |
local.profile.orcid | 0000-0003-2512-1696 | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:7466 | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Opportunities for genetic improvement of lamb survival | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.search.author | Brien, Forbes Donald | en |
local.search.author | Hebart, M L | en |
local.search.author | Robertson, M W | en |
local.search.author | Hinch, Geoffrey | en |
local.search.author | Geenty, Kennett | en |
local.search.author | Van Der Werf, Julius H | en |
local.search.author | Smith, D H | en |
local.search.author | Hocking Edwards, J E | en |
local.search.author | Greeff, J C | en |
local.search.author | Hart, K W | en |
local.search.author | Refshauge, G | en |
local.search.author | Bird-Gardiner, T L | en |
local.search.author | Gaunt, G | en |
local.search.author | Behrendt, R | en |
local.uneassociation | Unknown | en |
local.year.published | 2010 | en |
Appears in Collections: | Journal Article |
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