Genetic and environmental effects on age at first farrowing in sows in southeastern Brazil
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.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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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 0,439 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2860-2866 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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Repositório Institucional da UNESP |
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Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808129593301794816 |