Genetic trends in the expected progeny difference of the asymptotic weight of Nelore females
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1415-47572006000400012 http://hdl.handle.net/11449/30488 |
Resumo: | There are few studies on weight covering the full life cycle of Zebu cattle, and there is no entire growth description or mean growth pattern for animals belonging to this breed. In order to provide such data, 1,158 Nelore females born between 1985 and 1995 were weighed 14,563 times from birth to full growth maturity, in ten herds spread over seven Brazilian states. The Von Bertalanffy, Brody, logistic and Gompertz non-linear models were used to obtain the asymptotic weights (A) and the maturation rates (K). The (co)variance and breeding value components for A and K were obtained by using the multiple trait derivative free restricted maximum likelihood method under the animal model. Genetic trends were calculated in function of the mean expected progeny differences (EPD) for the trait (A or K) divided by the number of animals according to their year of birth. The genetic trends of the expected progeny difference with reference to the date of birth of the cows were, on average, -6.5g y-1 for A and 2.0g y-1 for K, close to zero as confirmed by the low (0.0023 to 0.003) coefficient of regression values. The curve parameters are recommended as a selection criterion to reach precocity and avoid adult weight increase in the female herd. |
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Genetic trends in the expected progeny difference of the asymptotic weight of Nelore femalesadult weightBovinesGenetic trendsmaturation ratesimulation with growth curvesThere are few studies on weight covering the full life cycle of Zebu cattle, and there is no entire growth description or mean growth pattern for animals belonging to this breed. In order to provide such data, 1,158 Nelore females born between 1985 and 1995 were weighed 14,563 times from birth to full growth maturity, in ten herds spread over seven Brazilian states. The Von Bertalanffy, Brody, logistic and Gompertz non-linear models were used to obtain the asymptotic weights (A) and the maturation rates (K). The (co)variance and breeding value components for A and K were obtained by using the multiple trait derivative free restricted maximum likelihood method under the animal model. Genetic trends were calculated in function of the mean expected progeny differences (EPD) for the trait (A or K) divided by the number of animals according to their year of birth. The genetic trends of the expected progeny difference with reference to the date of birth of the cows were, on average, -6.5g y-1 for A and 2.0g y-1 for K, close to zero as confirmed by the low (0.0023 to 0.003) coefficient of regression values. The curve parameters are recommended as a selection criterion to reach precocity and avoid adult weight increase in the female herd.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Federal de Tocantins Laboratório de Genética, Ciências BiológicasUniversidade Estadual Paulista Departamento de Melhoramento e Nutrição AnimalUniversidade de São Paulo Faculdade de Medicina de Ribeirão Preto Departamento de GenéticaUniversidade Estadual Paulista Departamento de Melhoramento e Nutrição AnimalSociedade Brasileira de GenéticaUniversidade Federal de Tocantins Laboratório de Genética, Ciências BiológicasUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Garnero, Analía del ValleMarcondes, Cintia RighettiGunski, Ricardo JoséOliveira, Henrique Nunes de [UNESP]Lôbo, Raysildo Barbosa2014-05-20T15:17:29Z2014-05-20T15:17:29Z2006-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article648-652application/pdfhttp://dx.doi.org/10.1590/S1415-47572006000400012Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 29, n. 4, p. 648-652, 2006.1415-4757http://hdl.handle.net/11449/3048810.1590/S1415-47572006000400012S1415-47572006000400012S1415-47572006000400012.pdf5593441035110683SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGenetics and Molecular Biology1.4930,638info:eu-repo/semantics/openAccess2023-11-21T06:14:59Zoai:repositorio.unesp.br:11449/30488Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-21T06:14:59Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Genetic trends in the expected progeny difference of the asymptotic weight of Nelore females |
title |
Genetic trends in the expected progeny difference of the asymptotic weight of Nelore females |
spellingShingle |
Genetic trends in the expected progeny difference of the asymptotic weight of Nelore females Garnero, Analía del Valle adult weight Bovines Genetic trends maturation rate simulation with growth curves |
title_short |
Genetic trends in the expected progeny difference of the asymptotic weight of Nelore females |
title_full |
Genetic trends in the expected progeny difference of the asymptotic weight of Nelore females |
title_fullStr |
Genetic trends in the expected progeny difference of the asymptotic weight of Nelore females |
title_full_unstemmed |
Genetic trends in the expected progeny difference of the asymptotic weight of Nelore females |
title_sort |
Genetic trends in the expected progeny difference of the asymptotic weight of Nelore females |
author |
Garnero, Analía del Valle |
author_facet |
Garnero, Analía del Valle Marcondes, Cintia Righetti Gunski, Ricardo José Oliveira, Henrique Nunes de [UNESP] Lôbo, Raysildo Barbosa |
author_role |
author |
author2 |
Marcondes, Cintia Righetti Gunski, Ricardo José Oliveira, Henrique Nunes de [UNESP] Lôbo, Raysildo Barbosa |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Tocantins Laboratório de Genética, Ciências Biológicas Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Garnero, Analía del Valle Marcondes, Cintia Righetti Gunski, Ricardo José Oliveira, Henrique Nunes de [UNESP] Lôbo, Raysildo Barbosa |
dc.subject.por.fl_str_mv |
adult weight Bovines Genetic trends maturation rate simulation with growth curves |
topic |
adult weight Bovines Genetic trends maturation rate simulation with growth curves |
description |
There are few studies on weight covering the full life cycle of Zebu cattle, and there is no entire growth description or mean growth pattern for animals belonging to this breed. In order to provide such data, 1,158 Nelore females born between 1985 and 1995 were weighed 14,563 times from birth to full growth maturity, in ten herds spread over seven Brazilian states. The Von Bertalanffy, Brody, logistic and Gompertz non-linear models were used to obtain the asymptotic weights (A) and the maturation rates (K). The (co)variance and breeding value components for A and K were obtained by using the multiple trait derivative free restricted maximum likelihood method under the animal model. Genetic trends were calculated in function of the mean expected progeny differences (EPD) for the trait (A or K) divided by the number of animals according to their year of birth. The genetic trends of the expected progeny difference with reference to the date of birth of the cows were, on average, -6.5g y-1 for A and 2.0g y-1 for K, close to zero as confirmed by the low (0.0023 to 0.003) coefficient of regression values. The curve parameters are recommended as a selection criterion to reach precocity and avoid adult weight increase in the female herd. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-01-01 2014-05-20T15:17:29Z 2014-05-20T15:17:29Z |
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/10.1590/S1415-47572006000400012 Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 29, n. 4, p. 648-652, 2006. 1415-4757 http://hdl.handle.net/11449/30488 10.1590/S1415-47572006000400012 S1415-47572006000400012 S1415-47572006000400012.pdf 5593441035110683 |
url |
http://dx.doi.org/10.1590/S1415-47572006000400012 http://hdl.handle.net/11449/30488 |
identifier_str_mv |
Genetics and Molecular Biology. Sociedade Brasileira de Genética, v. 29, n. 4, p. 648-652, 2006. 1415-4757 10.1590/S1415-47572006000400012 S1415-47572006000400012 S1415-47572006000400012.pdf 5593441035110683 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Genetics and Molecular Biology 1.493 0,638 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
648-652 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
publisher.none.fl_str_mv |
Sociedade Brasileira de Genética |
dc.source.none.fl_str_mv |
SciELO 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_ |
1799965022238015488 |