Genetic (co)variance components for ratio of lamb weight to ewe metabolic weight as an indicator of ewe efficiency
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.livsci.2011.09.014 http://hdl.handle.net/11449/73174 |
Resumo: | Data from a multibreed commercial flock located at Mid-West of Brazil, supported by Programa de Melhoramento Genético de Caprinos e Ovinos de Corte (GENECOC), were used to estimate genetic parameters of traits related to ewe productivity by Average Information Restricted Maximum Likelihood method applied to an animal model. The analyzed traits were litter weight at birth (LWB) and at weaning (LWW), ewe weight at weaning (EW) and ewe production efficiency, estimated by WEE=LWW/EW 0.75. The heritabilities were 0.26±0.05, 0.32±0.06, 0.37±0.03 and 0.10±0.02 for LWB, LWW, EW and WEE, respectively. Significant effects for direct heterosis were observed for LWW and EW. Recombination losses were important for EW and WEE. Genetic correlations of LWB with LWW, EW and WEE were 0.68, 0.37 and 0.15, respectively; of LWW with EW and WEE were 0.30 and 0.34, respectively; and between EW and WEE was -0.25. Even though it is a low heritability trait, WEE can be indicated as a selection criteria for improving the ewe productivity without increasing the mature weight of animals due to its genetic correlations with LWW and other traits. © 2011 Elsevier B.V. |
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Genetic (co)variance components for ratio of lamb weight to ewe metabolic weight as an indicator of ewe efficiencyGenetic correlationHeritabilityMultibreed flockNon-additive effectsSheepAnimaliaOvis ariesData from a multibreed commercial flock located at Mid-West of Brazil, supported by Programa de Melhoramento Genético de Caprinos e Ovinos de Corte (GENECOC), were used to estimate genetic parameters of traits related to ewe productivity by Average Information Restricted Maximum Likelihood method applied to an animal model. The analyzed traits were litter weight at birth (LWB) and at weaning (LWW), ewe weight at weaning (EW) and ewe production efficiency, estimated by WEE=LWW/EW 0.75. The heritabilities were 0.26±0.05, 0.32±0.06, 0.37±0.03 and 0.10±0.02 for LWB, LWW, EW and WEE, respectively. Significant effects for direct heterosis were observed for LWW and EW. Recombination losses were important for EW and WEE. Genetic correlations of LWB with LWW, EW and WEE were 0.68, 0.37 and 0.15, respectively; of LWW with EW and WEE were 0.30 and 0.34, respectively; and between EW and WEE was -0.25. Even though it is a low heritability trait, WEE can be indicated as a selection criteria for improving the ewe productivity without increasing the mature weight of animals due to its genetic correlations with LWW and other traits. © 2011 Elsevier B.V.Brazilian Agricultural Research Corporation EMBRAPA/National Goats and Sheep Research Center CNPCOFCAV UNESP, Campus de JaboticabalFCAV UNESP, Campus de JaboticabalEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Estadual Paulista (Unesp)Lôbo, Raimundo Nonato BragaJúnior, Gerardo Alves Fernandes [UNESP]Lôbo, Ana Maria Bezerra OliveiraFacó, Olivardo2014-05-27T11:26:22Z2014-05-27T11:26:22Z2012-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article214-219application/pdfhttp://dx.doi.org/10.1016/j.livsci.2011.09.014Livestock Science, v. 143, n. 2-3, p. 214-219, 2012.1871-1413http://hdl.handle.net/11449/7317410.1016/j.livsci.2011.09.0142-s2.0-848557825412-s2.0-84855782541.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengLivestock Science1.2040,730info:eu-repo/semantics/openAccess2023-10-04T06:08:11Zoai:repositorio.unesp.br:11449/73174Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:01:21.675900Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Genetic (co)variance components for ratio of lamb weight to ewe metabolic weight as an indicator of ewe efficiency |
title |
Genetic (co)variance components for ratio of lamb weight to ewe metabolic weight as an indicator of ewe efficiency |
spellingShingle |
Genetic (co)variance components for ratio of lamb weight to ewe metabolic weight as an indicator of ewe efficiency Lôbo, Raimundo Nonato Braga Genetic correlation Heritability Multibreed flock Non-additive effects Sheep Animalia Ovis aries |
title_short |
Genetic (co)variance components for ratio of lamb weight to ewe metabolic weight as an indicator of ewe efficiency |
title_full |
Genetic (co)variance components for ratio of lamb weight to ewe metabolic weight as an indicator of ewe efficiency |
title_fullStr |
Genetic (co)variance components for ratio of lamb weight to ewe metabolic weight as an indicator of ewe efficiency |
title_full_unstemmed |
Genetic (co)variance components for ratio of lamb weight to ewe metabolic weight as an indicator of ewe efficiency |
title_sort |
Genetic (co)variance components for ratio of lamb weight to ewe metabolic weight as an indicator of ewe efficiency |
author |
Lôbo, Raimundo Nonato Braga |
author_facet |
Lôbo, Raimundo Nonato Braga Júnior, Gerardo Alves Fernandes [UNESP] Lôbo, Ana Maria Bezerra Oliveira Facó, Olivardo |
author_role |
author |
author2 |
Júnior, Gerardo Alves Fernandes [UNESP] Lôbo, Ana Maria Bezerra Oliveira Facó, Olivardo |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Lôbo, Raimundo Nonato Braga Júnior, Gerardo Alves Fernandes [UNESP] Lôbo, Ana Maria Bezerra Oliveira Facó, Olivardo |
dc.subject.por.fl_str_mv |
Genetic correlation Heritability Multibreed flock Non-additive effects Sheep Animalia Ovis aries |
topic |
Genetic correlation Heritability Multibreed flock Non-additive effects Sheep Animalia Ovis aries |
description |
Data from a multibreed commercial flock located at Mid-West of Brazil, supported by Programa de Melhoramento Genético de Caprinos e Ovinos de Corte (GENECOC), were used to estimate genetic parameters of traits related to ewe productivity by Average Information Restricted Maximum Likelihood method applied to an animal model. The analyzed traits were litter weight at birth (LWB) and at weaning (LWW), ewe weight at weaning (EW) and ewe production efficiency, estimated by WEE=LWW/EW 0.75. The heritabilities were 0.26±0.05, 0.32±0.06, 0.37±0.03 and 0.10±0.02 for LWB, LWW, EW and WEE, respectively. Significant effects for direct heterosis were observed for LWW and EW. Recombination losses were important for EW and WEE. Genetic correlations of LWB with LWW, EW and WEE were 0.68, 0.37 and 0.15, respectively; of LWW with EW and WEE were 0.30 and 0.34, respectively; and between EW and WEE was -0.25. Even though it is a low heritability trait, WEE can be indicated as a selection criteria for improving the ewe productivity without increasing the mature weight of animals due to its genetic correlations with LWW and other traits. © 2011 Elsevier B.V. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-02-01 2014-05-27T11:26:22Z 2014-05-27T11:26:22Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.livsci.2011.09.014 Livestock Science, v. 143, n. 2-3, p. 214-219, 2012. 1871-1413 http://hdl.handle.net/11449/73174 10.1016/j.livsci.2011.09.014 2-s2.0-84855782541 2-s2.0-84855782541.pdf |
url |
http://dx.doi.org/10.1016/j.livsci.2011.09.014 http://hdl.handle.net/11449/73174 |
identifier_str_mv |
Livestock Science, v. 143, n. 2-3, p. 214-219, 2012. 1871-1413 10.1016/j.livsci.2011.09.014 2-s2.0-84855782541 2-s2.0-84855782541.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Livestock Science 1.204 0,730 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
214-219 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128304905977856 |