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https://hdl.handle.net/1959.11/53577
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DC Field | Value | Language |
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dc.contributor.author | Vargas Jurado, Napoleon | en |
dc.contributor.author | Taylor, Bret | en |
dc.contributor.author | Notter, David R | en |
dc.contributor.author | Brown, Daniel | en |
dc.contributor.author | Lewis, Ronald M | en |
dc.date.accessioned | 2022-11-02T04:38:32Z | - |
dc.date.available | 2022-11-02T04:38:32Z | - |
dc.date.issued | 2021-07 | - |
dc.identifier.citation | 2021 ASAS-CSAS-SSASAS Annual Meeting and Trade Show: Posters, p. 1-2 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/53577 | - |
dc.description.abstract | <p>Given its benefits on animal performance, crossbreeding is common commercially. Genetic evaluation of sheep in the U.S. is performed within breed type (terminal, maternal wool, range, hair). While incorporating crossbred records may improve assessment of purebreds, it requires accounting for heterotic and breed effects in the evaluation. The objectives were to i) determine the generalized effects of direct and maternal heterosis on growth traits of crossbred lambs, and ii) estimate covariance components for direct and maternal additive, and uncorrelated maternal environmental, effects among those traits. Data included body weights (BW) at birth (BN; n = 14395), pre-weaning (WN; n = 9298), weaning (WW; n = 9230), and post-weaning (PW; n = 1593). Mean (SD) BW were 5.3 (1.1), 22.2 (8.7), 39.1 (7.2), and 54.2 (8.7) kg for BN, WN, WW, and PW, respectively. Estimates of heterotic effects and covariance components were obtained using a multiple trait animal model. Genetic effects based on founders’ breeds were included, being significant. Estimates of direct heterosis were 3.04 ± 0.61, 2.62 ± 0.64, 3.99 ± 0.54, and 5.97 ± 0.86%, and estimates of maternal heterosis were 1.86 ± 0.87, 4.42 ± 0.79, 3.69 ± 0.66, and 3.77 ± 0.90%, for BN, WN, WW, and PW, respectively. Direct heritability estimates were 0.17 ± 0.02, 0.13 ± 0.02, 0.18 ± 0.02, and 0.47 ± 0.04 for BN, WN, WW, and PW, respectively. Additive maternal effects defined trivial variation in PW. For BN, WN, and WW, respectively, maternal heritability estimates were 0.17 ± 0.02, 0.10 ± 0.02, and 0.07 ± 0.02. Uncorrelated maternal effects defined little variation in any trait. Direct and maternal heterosis had considerable impact on growth traits, emphasizing the value of crossbreeding and the need to account for heterosis, in addition to breed effects, if crossbred lamb information is included in genetic evaluation.</p> | en |
dc.language | en | en |
dc.publisher | American Society of Animal Science | en |
dc.relation.ispartof | 2021 ASAS-CSAS-SSASAS Annual Meeting and Trade Show: Posters | en |
dc.title | Heterotic and breed effects in crossbred lambs | en |
dc.type | Conference Publication | en |
dc.relation.conference | ASAS-CSAS-SSASAS 2021: 2021 ASAS-CSAS-SSASAS Annual Meeting and Trade Show | en |
dcterms.accessRights | Bronze | en |
local.contributor.firstname | Napoleon | en |
local.contributor.firstname | Bret | en |
local.contributor.firstname | David R | en |
local.contributor.firstname | Daniel | en |
local.contributor.firstname | Ronald M | en |
local.profile.school | Animal Genetics and Breeding Unit | en |
local.profile.email | dbrown2@une.edu.au | en |
local.output.category | E3 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.date.conference | 14th - 17th July, 2021 | en |
local.conference.place | Louisville, United States of America | en |
local.publisher.place | Louisville, United States of America | en |
local.format.startpage | 1 | en |
local.format.endpage | 2 | en |
local.url.open | https://cdmcd.co/xvQgxq | en |
local.access.fulltext | Yes | en |
local.contributor.lastname | Vargas Jurado | en |
local.contributor.lastname | Taylor | en |
local.contributor.lastname | Notter | en |
local.contributor.lastname | Brown | en |
local.contributor.lastname | Lewis | en |
dc.identifier.staff | une-id:dbrown2 | en |
local.profile.orcid | 0000-0002-4786-7563 | 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:1959.11/53577 | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Heterotic and breed effects in crossbred lambs | en |
local.output.categorydescription | E3 Extract of Scholarly Conference Publication | en |
local.conference.details | ASAS-CSAS-SSASAS 2021: 2021 ASAS-CSAS-SSASAS Annual Meeting and Trade Show, Louisville, United States of America, 14th - 17th July, 2021 | en |
local.search.author | Vargas Jurado, Napoleon | en |
local.search.author | Taylor, Bret | en |
local.search.author | Notter, David R | en |
local.search.author | Brown, Daniel | en |
local.search.author | Lewis, Ronald M | en |
local.uneassociation | Yes | en |
dc.date.presented | 2021-07-16 | - |
local.atsiresearch | No | en |
local.conference.venue | Louisville Convention Center | en |
local.sensitive.cultural | No | en |
local.year.published | 2021 | en |
local.year.presented | 2021 | en |
local.fileurl.closedpublished | https://rune.une.edu.au/web/retrieve/008c6c32-4737-4861-be66-24682ba4689e | en |
local.subject.for2020 | 300301 Animal growth and development | en |
local.subject.seo2020 | 100413 Sheep for wool | en |
local.date.start | 2021-07-14 | - |
local.date.end | 2021-07-17 | - |
Appears in Collections: | Animal Genetics and Breeding Unit (AGBU) Conference Publication |
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