Environmental and genetic factors affecting the weaning-estrus interval in sows
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4238/2011.November.4.2 http://hdl.handle.net/11449/4964 |
Resumo: | We examined the effects of environmental and genetic factors on the weaning-to-estrus interval (WEI) in sows. In order to perform the analyses of the environmental factors, 8104 observations of the 1st to the 6th WEI were carried out, while 6548 observations of the 1st to the 3rd WEI were carried out for the analyses of genetic factors. The environmental model included as fixed effects, herd, genetic line, year and season of birth, as well as the covariates, age of sow at farrowing, litter size at birth and lactation length. Genetic analysis was performed by repeatability and multitrait models. The mean and coefficient of variation for WEI were 7.02 days and 100.6%, respectively. The linear effect of lactation length and the quadratic effect of the age of sow at farrowing affected the WEI. Herd, year and season of farrowing were significant sources of variation for WEI, and there was no influence of genetic line or of litter size at birth. Heritability estimated by the repeatability model was 0.04, while heritabilities obtained by the multitrait model were 0.07, 0.02 and 0.07 for the first three WEI, respectively. Estimates of genetic correlations among the different WEI were of moderate to low magnitude. It was concluded that environmental factors, such as year and season of farrowing, lactation length, age of sow at farrowing and herd, should be considered in the model for best estimation of genetic parameters for this trait. Although with only a small possible genetic gain, selection can be made based on the first WEI. |
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Environmental and genetic factors affecting the weaning-estrus interval in sowsrepeatabilityMultitrait modelNon-genetic factorsHeritabilityWe examined the effects of environmental and genetic factors on the weaning-to-estrus interval (WEI) in sows. In order to perform the analyses of the environmental factors, 8104 observations of the 1st to the 6th WEI were carried out, while 6548 observations of the 1st to the 3rd WEI were carried out for the analyses of genetic factors. The environmental model included as fixed effects, herd, genetic line, year and season of birth, as well as the covariates, age of sow at farrowing, litter size at birth and lactation length. Genetic analysis was performed by repeatability and multitrait models. The mean and coefficient of variation for WEI were 7.02 days and 100.6%, respectively. The linear effect of lactation length and the quadratic effect of the age of sow at farrowing affected the WEI. Herd, year and season of farrowing were significant sources of variation for WEI, and there was no influence of genetic line or of litter size at birth. Heritability estimated by the repeatability model was 0.04, while heritabilities obtained by the multitrait model were 0.07, 0.02 and 0.07 for the first three WEI, respectively. Estimates of genetic correlations among the different WEI were of moderate to low magnitude. It was concluded that environmental factors, such as year and season of farrowing, lactation length, age of sow at farrowing and herd, should be considered in the model for best estimation of genetic parameters for this trait. Although with only a small possible genetic gain, selection can be made based on the first WEI.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Federal de Viçosa (UFV), Dept Zootecnia, Vicosa, MG, BrazilUniv Estadual Paulista, Dept Zootecnia, Jaboticabal, SP, BrazilUniv Fed Rural Amazonas, Parauapebas, PA, BrazilUniv Estadual Paulista, Dept Zootecnia, Jaboticabal, SP, BrazilFunpec-editoraUniversidade Federal de Viçosa (UFV)Universidade Estadual Paulista (Unesp)Univ Fed Rural AmazonasLeite, C. D. S.Lui, J. F. [UNESP]Albuquerque, Lucia Galvão de [UNESP]Alves, D. N. M.2014-05-20T13:19:11Z2014-05-20T13:19:11Z2011-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2692-2701application/pdfhttp://dx.doi.org/10.4238/2011.November.4.2Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 10, n. 4, p. 2692-2701, 2011.1676-5680http://hdl.handle.net/11449/496410.4238/2011.November.4.2WOS:000300617600041WOS000300617600041.pdf20243594654928635866981114947883Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGenetics and Molecular Research0,439info:eu-repo/semantics/openAccess2024-06-07T18:43:47Zoai:repositorio.unesp.br:11449/4964Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-06-07T18:43:47Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Environmental and genetic factors affecting the weaning-estrus interval in sows |
title |
Environmental and genetic factors affecting the weaning-estrus interval in sows |
spellingShingle |
Environmental and genetic factors affecting the weaning-estrus interval in sows Leite, C. D. S. repeatability Multitrait model Non-genetic factors Heritability |
title_short |
Environmental and genetic factors affecting the weaning-estrus interval in sows |
title_full |
Environmental and genetic factors affecting the weaning-estrus interval in sows |
title_fullStr |
Environmental and genetic factors affecting the weaning-estrus interval in sows |
title_full_unstemmed |
Environmental and genetic factors affecting the weaning-estrus interval in sows |
title_sort |
Environmental and genetic factors affecting the weaning-estrus interval in sows |
author |
Leite, C. D. S. |
author_facet |
Leite, C. D. S. Lui, J. F. [UNESP] Albuquerque, Lucia Galvão de [UNESP] Alves, D. N. M. |
author_role |
author |
author2 |
Lui, J. F. [UNESP] Albuquerque, Lucia Galvão de [UNESP] Alves, D. N. M. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Viçosa (UFV) Universidade Estadual Paulista (Unesp) Univ Fed Rural Amazonas |
dc.contributor.author.fl_str_mv |
Leite, C. D. S. Lui, J. F. [UNESP] Albuquerque, Lucia Galvão de [UNESP] Alves, D. N. M. |
dc.subject.por.fl_str_mv |
repeatability Multitrait model Non-genetic factors Heritability |
topic |
repeatability Multitrait model Non-genetic factors Heritability |
description |
We examined the effects of environmental and genetic factors on the weaning-to-estrus interval (WEI) in sows. In order to perform the analyses of the environmental factors, 8104 observations of the 1st to the 6th WEI were carried out, while 6548 observations of the 1st to the 3rd WEI were carried out for the analyses of genetic factors. The environmental model included as fixed effects, herd, genetic line, year and season of birth, as well as the covariates, age of sow at farrowing, litter size at birth and lactation length. Genetic analysis was performed by repeatability and multitrait models. The mean and coefficient of variation for WEI were 7.02 days and 100.6%, respectively. The linear effect of lactation length and the quadratic effect of the age of sow at farrowing affected the WEI. Herd, year and season of farrowing were significant sources of variation for WEI, and there was no influence of genetic line or of litter size at birth. Heritability estimated by the repeatability model was 0.04, while heritabilities obtained by the multitrait model were 0.07, 0.02 and 0.07 for the first three WEI, respectively. Estimates of genetic correlations among the different WEI were of moderate to low magnitude. It was concluded that environmental factors, such as year and season of farrowing, lactation length, age of sow at farrowing and herd, should be considered in the model for best estimation of genetic parameters for this trait. Although with only a small possible genetic gain, selection can be made based on the first WEI. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-01-01 2014-05-20T13:19:11Z 2014-05-20T13:19:11Z |
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/10.4238/2011.November.4.2 Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 10, n. 4, p. 2692-2701, 2011. 1676-5680 http://hdl.handle.net/11449/4964 10.4238/2011.November.4.2 WOS:000300617600041 WOS000300617600041.pdf 2024359465492863 5866981114947883 |
url |
http://dx.doi.org/10.4238/2011.November.4.2 http://hdl.handle.net/11449/4964 |
identifier_str_mv |
Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 10, n. 4, p. 2692-2701, 2011. 1676-5680 10.4238/2011.November.4.2 WOS:000300617600041 WOS000300617600041.pdf 2024359465492863 5866981114947883 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Genetics and Molecular Research 0,439 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2692-2701 application/pdf |
dc.publisher.none.fl_str_mv |
Funpec-editora |
publisher.none.fl_str_mv |
Funpec-editora |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1803045478586122240 |