Genetic and environmental effects on age at first farrowing in sows in southeastern Brazil

Detalhes bibliográficos
Autor(a) principal: Cavalcante-Neto, A.
Data de Publicação: 2011
Outros Autores: Lui, J. F. [UNESP], Sarmento, J. L. R., Ribeiro, M. N., Fonseca, C., Tonhati, Humberto [UNESP], Monteiro, J. M. C., Lara, M. A. C., Queiroz, S. A. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.4238/2011.October.31.9
http://hdl.handle.net/11449/4965
Resumo: We evaluated genetic and environmental factors affecting age at first farrowing of sows in the Brazilian southeast. For this purpose, 466 observations regarding the age at first farrowing were made for Dalland-C40 (c) animals belonging to two herds. The effects of the environmental factors on this trait were assessed by means of a model that included, as random effects, the influence of the sow's father and mother and, as fixed effects, the influence the year of birth, the herd and the birth season, along with the covariable litter size at birth. The variance components were estimated using the derivative-free restricted maximum likelihood method. The estimated mean was 354.8 +/- 25.87 days, with a coefficient of variation of 7.29%. Significant effects on the trait were observed for the herd, the year and the season of birth; but a linear effect of litter size at birth on the age at first farrowing was not observed. The boar did not significantly contribute to the variation occurring among the sows, whereas the sow's mother caused significant variation. The heritability estimate for the age at first farrowing was 0.44 +/- 0.15, which is considered high. We concluded that herd effect and year and season of birth should be taken into consideration for an accurate genetic comparison; consequently, the animals should be joined into contemporary groups.
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spelling Genetic and environmental effects on age at first farrowing in sows in southeastern BrazilPubertyReproductionNon-genetic factorsWe evaluated genetic and environmental factors affecting age at first farrowing of sows in the Brazilian southeast. For this purpose, 466 observations regarding the age at first farrowing were made for Dalland-C40 (c) animals belonging to two herds. The effects of the environmental factors on this trait were assessed by means of a model that included, as random effects, the influence of the sow's father and mother and, as fixed effects, the influence the year of birth, the herd and the birth season, along with the covariable litter size at birth. The variance components were estimated using the derivative-free restricted maximum likelihood method. The estimated mean was 354.8 +/- 25.87 days, with a coefficient of variation of 7.29%. Significant effects on the trait were observed for the herd, the year and the season of birth; but a linear effect of litter size at birth on the age at first farrowing was not observed. The boar did not significantly contribute to the variation occurring among the sows, whereas the sow's mother caused significant variation. The heritability estimate for the age at first farrowing was 0.44 +/- 0.15, which is considered high. We concluded that herd effect and year and season of birth should be taken into consideration for an accurate genetic comparison; consequently, the animals should be joined into contemporary groups.Fundação para a Ciência e a Tecnologia (FCT)ALBANEuropean UnionUniv Aveiro, Dept Biol, P-3800 Aveiro, PortugalUniv Aveiro, CESAM, P-3800 Aveiro, PortugalUniv Estadual Paulista, Dept Zootecnia, Jaboticabal, SP, BrazilUniv Fed Piaui, Bom Jesus, PI, BrazilUniversidade Federal de Pernambuco (UFPE), Recife, PE, BrazilEscola Tecn Fed Muzambinho, Muzambinho, MG, BrazilInst Zootecnia, Nova Odessa, SP, BrazilUniv Estadual Paulista, Dept Zootecnia, Jaboticabal, SP, BrazilFCT: SFRH/BD/47821/2008European Union: E07D402597BRFunpec-editoraUniversidade de AveiroUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Universidade Federal de Pernambuco (UFPE)Escola Técnica Federal de Muzambinho (ETF-Muz)Cavalcante-Neto, A.Lui, J. F. [UNESP]Sarmento, J. L. R.Ribeiro, M. N.Fonseca, C.Tonhati, Humberto [UNESP]Monteiro, J. M. C.Lara, M. A. C.Queiroz, S. A. [UNESP]2014-05-20T13:19:12Z2014-05-20T13:19:12Z2011-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2860-2866application/pdfhttp://dx.doi.org/10.4238/2011.October.31.9Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 10, n. 4, p. 2860-2866, 2011.1676-5680http://hdl.handle.net/11449/496510.4238/2011.October.31.9WOS:000300617600058WOS000300617600058.pdf202435946549286374452549608581599096087557977610Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGenetics and Molecular Research0,439info:eu-repo/semantics/openAccess2024-06-07T18:45:09Zoai:repositorio.unesp.br:11449/4965Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:11:28.263019Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Genetic and environmental effects on age at first farrowing in sows in southeastern Brazil
title Genetic and environmental effects on age at first farrowing in sows in southeastern Brazil
spellingShingle Genetic and environmental effects on age at first farrowing in sows in southeastern Brazil
Cavalcante-Neto, A.
Puberty
Reproduction
Non-genetic factors
title_short Genetic and environmental effects on age at first farrowing in sows in southeastern Brazil
title_full Genetic and environmental effects on age at first farrowing in sows in southeastern Brazil
title_fullStr Genetic and environmental effects on age at first farrowing in sows in southeastern Brazil
title_full_unstemmed Genetic and environmental effects on age at first farrowing in sows in southeastern Brazil
title_sort Genetic and environmental effects on age at first farrowing in sows in southeastern Brazil
author Cavalcante-Neto, A.
author_facet Cavalcante-Neto, A.
Lui, J. F. [UNESP]
Sarmento, J. L. R.
Ribeiro, M. N.
Fonseca, C.
Tonhati, Humberto [UNESP]
Monteiro, J. M. C.
Lara, M. A. C.
Queiroz, S. A. [UNESP]
author_role author
author2 Lui, J. F. [UNESP]
Sarmento, J. L. R.
Ribeiro, M. N.
Fonseca, C.
Tonhati, Humberto [UNESP]
Monteiro, J. M. C.
Lara, M. A. C.
Queiroz, S. A. [UNESP]
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de Aveiro
Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
Universidade Federal de Pernambuco (UFPE)
Escola Técnica Federal de Muzambinho (ETF-Muz)
dc.contributor.author.fl_str_mv Cavalcante-Neto, A.
Lui, J. F. [UNESP]
Sarmento, J. L. R.
Ribeiro, M. N.
Fonseca, C.
Tonhati, Humberto [UNESP]
Monteiro, J. M. C.
Lara, M. A. C.
Queiroz, S. A. [UNESP]
dc.subject.por.fl_str_mv Puberty
Reproduction
Non-genetic factors
topic Puberty
Reproduction
Non-genetic factors
description We evaluated genetic and environmental factors affecting age at first farrowing of sows in the Brazilian southeast. For this purpose, 466 observations regarding the age at first farrowing were made for Dalland-C40 (c) animals belonging to two herds. The effects of the environmental factors on this trait were assessed by means of a model that included, as random effects, the influence of the sow's father and mother and, as fixed effects, the influence the year of birth, the herd and the birth season, along with the covariable litter size at birth. The variance components were estimated using the derivative-free restricted maximum likelihood method. The estimated mean was 354.8 +/- 25.87 days, with a coefficient of variation of 7.29%. Significant effects on the trait were observed for the herd, the year and the season of birth; but a linear effect of litter size at birth on the age at first farrowing was not observed. The boar did not significantly contribute to the variation occurring among the sows, whereas the sow's mother caused significant variation. The heritability estimate for the age at first farrowing was 0.44 +/- 0.15, which is considered high. We concluded that herd effect and year and season of birth should be taken into consideration for an accurate genetic comparison; consequently, the animals should be joined into contemporary groups.
publishDate 2011
dc.date.none.fl_str_mv 2011-01-01
2014-05-20T13:19:12Z
2014-05-20T13:19:12Z
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.October.31.9
Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 10, n. 4, p. 2860-2866, 2011.
1676-5680
http://hdl.handle.net/11449/4965
10.4238/2011.October.31.9
WOS:000300617600058
WOS000300617600058.pdf
2024359465492863
7445254960858159
9096087557977610
url http://dx.doi.org/10.4238/2011.October.31.9
http://hdl.handle.net/11449/4965
identifier_str_mv Genetics and Molecular Research. Ribeirao Preto: Funpec-editora, v. 10, n. 4, p. 2860-2866, 2011.
1676-5680
10.4238/2011.October.31.9
WOS:000300617600058
WOS000300617600058.pdf
2024359465492863
7445254960858159
9096087557977610
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Genetics and Molecular Research
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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
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repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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