Correlações genéticas de características de tamanho corporal e condição corporal com características de eficiência produtiva de fêmeas da raça Canchim
Autor(a) principal: | |
---|---|
Data de Publicação: | 2008 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1516-35982008000300006 http://hdl.handle.net/11449/70334 |
Resumo: | The objectives of this study were to obtain heritability estimates for number (NBZ10 and NBZT) and kilograms (QBD10 and QBDT) of calves weaned up to ten years of age and during herd life, kilograms of calves weaned per year in herd (QTPR) and their genetic correlations with culling age, ages at first, at second and at third calving, adjusted and unadjusted weights for condition score, body size indexes and condition score at first mating, at first calving and at mature age. Variance and covariance components were estimated by REML using univariate and bivariate models including the fixed effect of contemporary group and additive direct genetic and residual as random effects. Heritability estimates obtained from univariate analyses were 0.10 ± 0.05 (NBZT), 0.10 ± 0.03 (QBDT), 0.12 ± 0.05 (NBZ10), 0.13 ± 0.05 (QBD10) and 0.15 ± 0.05 (QTPR) and indicate low response by selection on these traits. Genetic correlation estimate suggest that selection for reducing age at first calving will not improve cow productivity. Selection for increasing mature weight will reduce kilograms of calves weaned per year in herd and the number of calves weaned up to ten years of age and during herd life. Selection on body size indexes and on cow weights adjusted for condition score may result in similar correlated responses in productive traits of cows, which would be higher than those from selection on unadjusted cow weights. © 2008 Sociedade Brasileira de Zootecnia. |
id |
UNSP_90e45a2cc6315b90df68783322b476e7 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/70334 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Correlações genéticas de características de tamanho corporal e condição corporal com características de eficiência produtiva de fêmeas da raça CanchimGenetic correlations among cow body size, condition score and productive traits in Canchim cowsBeef cattleCow body sizeGenetic parametersKilograms of weaned calvesNumber of weaned calvesBosThe objectives of this study were to obtain heritability estimates for number (NBZ10 and NBZT) and kilograms (QBD10 and QBDT) of calves weaned up to ten years of age and during herd life, kilograms of calves weaned per year in herd (QTPR) and their genetic correlations with culling age, ages at first, at second and at third calving, adjusted and unadjusted weights for condition score, body size indexes and condition score at first mating, at first calving and at mature age. Variance and covariance components were estimated by REML using univariate and bivariate models including the fixed effect of contemporary group and additive direct genetic and residual as random effects. Heritability estimates obtained from univariate analyses were 0.10 ± 0.05 (NBZT), 0.10 ± 0.03 (QBDT), 0.12 ± 0.05 (NBZ10), 0.13 ± 0.05 (QBD10) and 0.15 ± 0.05 (QTPR) and indicate low response by selection on these traits. Genetic correlation estimate suggest that selection for reducing age at first calving will not improve cow productivity. Selection for increasing mature weight will reduce kilograms of calves weaned per year in herd and the number of calves weaned up to ten years of age and during herd life. Selection on body size indexes and on cow weights adjusted for condition score may result in similar correlated responses in productive traits of cows, which would be higher than those from selection on unadjusted cow weights. © 2008 Sociedade Brasileira de Zootecnia.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Programa de Pós-graduação em Zootecnia UNESP Campus de Jaboticabal, SP, CEP: 14884-900Embrapa Pecuária Sudeste CNPq, CEP: 13560-970, São PauloPrograma de Pós-graduação em Zootecnia UNESP Campus de Jaboticabal, SP, CEP: 14884-900Universidade Estadual Paulista (Unesp)Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Baldi, Fernando [UNESP]De Alencar, Mauricio MelloDe Freitas, Alfredo Ribeiro2014-05-27T11:22:49Z2014-05-27T11:22:49Z2008-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article420-426application/pdfhttp://dx.doi.org/10.1590/S1516-35982008000300006Revista Brasileira de Zootecnia, v. 37, n. 3, p. 420-426, 2008.1516-35981806-9290http://hdl.handle.net/11449/7033410.1590/S1516-35982008000300006S1516-35982008000300006WOS:0002543873000062-s2.0-416491191512-s2.0-41649119151.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira de Zootecnia0.7350,337info:eu-repo/semantics/openAccess2024-06-07T18:42:33Zoai:repositorio.unesp.br:11449/70334Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:12:54.257180Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Correlações genéticas de características de tamanho corporal e condição corporal com características de eficiência produtiva de fêmeas da raça Canchim Genetic correlations among cow body size, condition score and productive traits in Canchim cows |
title |
Correlações genéticas de características de tamanho corporal e condição corporal com características de eficiência produtiva de fêmeas da raça Canchim |
spellingShingle |
Correlações genéticas de características de tamanho corporal e condição corporal com características de eficiência produtiva de fêmeas da raça Canchim Baldi, Fernando [UNESP] Beef cattle Cow body size Genetic parameters Kilograms of weaned calves Number of weaned calves Bos |
title_short |
Correlações genéticas de características de tamanho corporal e condição corporal com características de eficiência produtiva de fêmeas da raça Canchim |
title_full |
Correlações genéticas de características de tamanho corporal e condição corporal com características de eficiência produtiva de fêmeas da raça Canchim |
title_fullStr |
Correlações genéticas de características de tamanho corporal e condição corporal com características de eficiência produtiva de fêmeas da raça Canchim |
title_full_unstemmed |
Correlações genéticas de características de tamanho corporal e condição corporal com características de eficiência produtiva de fêmeas da raça Canchim |
title_sort |
Correlações genéticas de características de tamanho corporal e condição corporal com características de eficiência produtiva de fêmeas da raça Canchim |
author |
Baldi, Fernando [UNESP] |
author_facet |
Baldi, Fernando [UNESP] De Alencar, Mauricio Mello De Freitas, Alfredo Ribeiro |
author_role |
author |
author2 |
De Alencar, Mauricio Mello De Freitas, Alfredo Ribeiro |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) |
dc.contributor.author.fl_str_mv |
Baldi, Fernando [UNESP] De Alencar, Mauricio Mello De Freitas, Alfredo Ribeiro |
dc.subject.por.fl_str_mv |
Beef cattle Cow body size Genetic parameters Kilograms of weaned calves Number of weaned calves Bos |
topic |
Beef cattle Cow body size Genetic parameters Kilograms of weaned calves Number of weaned calves Bos |
description |
The objectives of this study were to obtain heritability estimates for number (NBZ10 and NBZT) and kilograms (QBD10 and QBDT) of calves weaned up to ten years of age and during herd life, kilograms of calves weaned per year in herd (QTPR) and their genetic correlations with culling age, ages at first, at second and at third calving, adjusted and unadjusted weights for condition score, body size indexes and condition score at first mating, at first calving and at mature age. Variance and covariance components were estimated by REML using univariate and bivariate models including the fixed effect of contemporary group and additive direct genetic and residual as random effects. Heritability estimates obtained from univariate analyses were 0.10 ± 0.05 (NBZT), 0.10 ± 0.03 (QBDT), 0.12 ± 0.05 (NBZ10), 0.13 ± 0.05 (QBD10) and 0.15 ± 0.05 (QTPR) and indicate low response by selection on these traits. Genetic correlation estimate suggest that selection for reducing age at first calving will not improve cow productivity. Selection for increasing mature weight will reduce kilograms of calves weaned per year in herd and the number of calves weaned up to ten years of age and during herd life. Selection on body size indexes and on cow weights adjusted for condition score may result in similar correlated responses in productive traits of cows, which would be higher than those from selection on unadjusted cow weights. © 2008 Sociedade Brasileira de Zootecnia. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-03-01 2014-05-27T11:22:49Z 2014-05-27T11:22:49Z |
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/S1516-35982008000300006 Revista Brasileira de Zootecnia, v. 37, n. 3, p. 420-426, 2008. 1516-3598 1806-9290 http://hdl.handle.net/11449/70334 10.1590/S1516-35982008000300006 S1516-35982008000300006 WOS:000254387300006 2-s2.0-41649119151 2-s2.0-41649119151.pdf |
url |
http://dx.doi.org/10.1590/S1516-35982008000300006 http://hdl.handle.net/11449/70334 |
identifier_str_mv |
Revista Brasileira de Zootecnia, v. 37, n. 3, p. 420-426, 2008. 1516-3598 1806-9290 10.1590/S1516-35982008000300006 S1516-35982008000300006 WOS:000254387300006 2-s2.0-41649119151 2-s2.0-41649119151.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Brasileira de Zootecnia 0.735 0,337 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
420-426 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_ |
1808129033978773504 |