Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça Gir
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/231716 |
Resumo: | Data from 32,779 monthly milk production, from 3,605 lactations until 305 days (PL305), from 2,082 Gir cows, sired by 281 bulls, calving from 1987 to 1999, in 11 herds, were used to verify the viability of using daily milk production control (PLDC) to perform genetic evaluations within Gir breed. Bivariate analysis on PLDC1 to PLDC10 and PL305 were performed utilizing the restricted maximum likelihood method within an animal model, which included the three first lactations as replicate measures of the same dams unit. Animals were grouped according to the criterion of contemporaneous group of herd-year-season, and according to calving-age and to the interval calving-first control in PLDC1. The observed averages (kg) and the respective standard deviations for PLDC1 at PLDC10 and PL305 were: 11.97±4.64; 11.93±4.68; 10.98±4.40; 10.18±4.12; 9.66±3.88; 9.20±3.69; 8.63±3.51; 8.08±3.33; 7.59±3.27; 7.22±3.15 and 2746.17±1299.90. The average lactation length was 273.72±48.95 days. Heritability estimates for PLDC based on bivariate analysis ranged from 0.24 to 0.14, decreasing from the first to the tenth control; the heritability estimate for PL305 was 0.19. Estimates of the genetic correlations between PLDC and PL305 varied from 0.85 to 1.00. The estimates of the genetic correlations between PLDC1 to PLDC9 with PLDC6 to PLDC10 were greater than 0.80, except the correlations between PLDC9 with PLDC1, PLDC10 with PLDC1, PLDC2, PLDC3 and PLDC6. The estimates of the phenotypic correlations resulting in intermediate value between genetic and environmental correlations (smaller). The results of genetic trend indicate that indirect selection for PLDC2 to PLDC4 was more efficient than direct selection for PL305. |
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Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça GirGenetic, phenotypic and environmental parameters for milk production at the control day and 305 days of lactation of Gir breed cowsAnimal breedingDairy cattleMilking controlTest dayData from 32,779 monthly milk production, from 3,605 lactations until 305 days (PL305), from 2,082 Gir cows, sired by 281 bulls, calving from 1987 to 1999, in 11 herds, were used to verify the viability of using daily milk production control (PLDC) to perform genetic evaluations within Gir breed. Bivariate analysis on PLDC1 to PLDC10 and PL305 were performed utilizing the restricted maximum likelihood method within an animal model, which included the three first lactations as replicate measures of the same dams unit. Animals were grouped according to the criterion of contemporaneous group of herd-year-season, and according to calving-age and to the interval calving-first control in PLDC1. The observed averages (kg) and the respective standard deviations for PLDC1 at PLDC10 and PL305 were: 11.97±4.64; 11.93±4.68; 10.98±4.40; 10.18±4.12; 9.66±3.88; 9.20±3.69; 8.63±3.51; 8.08±3.33; 7.59±3.27; 7.22±3.15 and 2746.17±1299.90. The average lactation length was 273.72±48.95 days. Heritability estimates for PLDC based on bivariate analysis ranged from 0.24 to 0.14, decreasing from the first to the tenth control; the heritability estimate for PL305 was 0.19. Estimates of the genetic correlations between PLDC and PL305 varied from 0.85 to 1.00. The estimates of the genetic correlations between PLDC1 to PLDC9 with PLDC6 to PLDC10 were greater than 0.80, except the correlations between PLDC9 with PLDC1, PLDC10 with PLDC1, PLDC2, PLDC3 and PLDC6. The estimates of the phenotypic correlations resulting in intermediate value between genetic and environmental correlations (smaller). The results of genetic trend indicate that indirect selection for PLDC2 to PLDC4 was more efficient than direct selection for PL305.Pesquisador da EMBRAPA Gado de Leite, Caixa Postal 351, 38001-970, Uberaba, MGFCAV/UNESP, Via Prof. Paulo Castellane s/n, 14884-900, Jaboticabal, SPPesquisadores EMBRAPA Gado de Leite, R. Eugênio do Nascimento 610, 36038-330, Juiz de Fora, MGPesquisadora do IZ, Av. Bandeirantes 2419, 14001-970, Ribeirãa Preto, SPEV/UFMG, Av. Antônio Carlos 6627, 30123-970, Belo Horizonte, MGPesquisador da EPAMIG, Caixa Postal 351, 38001-970, Uberaba, MGFCAV/UNESP, Via Prof. Paulo Castellane s/n, 14884-900, Jaboticabal, SPEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Estadual Paulista (UNESP)Pesquisadora do IZUniversidade Federal de Minas Gerais (UFMG)Pesquisador da EPAMIGLedic, Ivan LuzTonhati, Humberto [UNESP]Verneque, Rui Da SilvaEl Faro, LeniraMartinez, Mário LuizCosta, Cláudio NápolisCampos Pereira, Jonas CarlosFernandes, Leonardo De OliveiraGalvão De Albuquerque, Lúcia [UNESP]2022-04-29T08:47:12Z2022-04-29T08:47:12Z2002-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1953-1963Revista Brasileira de Zootecnia, v. 31, n. 5, p. 1953-1963, 2002.0100-4859http://hdl.handle.net/11449/2317162-s2.0-0041385718Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira de Zootecniainfo:eu-repo/semantics/openAccess2024-06-07T18:38:50Zoai:repositorio.unesp.br:11449/231716Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-06-07T18:38:50Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça Gir Genetic, phenotypic and environmental parameters for milk production at the control day and 305 days of lactation of Gir breed cows |
title |
Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça Gir |
spellingShingle |
Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça Gir Ledic, Ivan Luz Animal breeding Dairy cattle Milking control Test day |
title_short |
Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça Gir |
title_full |
Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça Gir |
title_fullStr |
Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça Gir |
title_full_unstemmed |
Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça Gir |
title_sort |
Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça Gir |
author |
Ledic, Ivan Luz |
author_facet |
Ledic, Ivan Luz Tonhati, Humberto [UNESP] Verneque, Rui Da Silva El Faro, Lenira Martinez, Mário Luiz Costa, Cláudio Nápolis Campos Pereira, Jonas Carlos Fernandes, Leonardo De Oliveira Galvão De Albuquerque, Lúcia [UNESP] |
author_role |
author |
author2 |
Tonhati, Humberto [UNESP] Verneque, Rui Da Silva El Faro, Lenira Martinez, Mário Luiz Costa, Cláudio Nápolis Campos Pereira, Jonas Carlos Fernandes, Leonardo De Oliveira Galvão De Albuquerque, Lúcia [UNESP] |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Universidade Estadual Paulista (UNESP) Pesquisadora do IZ Universidade Federal de Minas Gerais (UFMG) Pesquisador da EPAMIG |
dc.contributor.author.fl_str_mv |
Ledic, Ivan Luz Tonhati, Humberto [UNESP] Verneque, Rui Da Silva El Faro, Lenira Martinez, Mário Luiz Costa, Cláudio Nápolis Campos Pereira, Jonas Carlos Fernandes, Leonardo De Oliveira Galvão De Albuquerque, Lúcia [UNESP] |
dc.subject.por.fl_str_mv |
Animal breeding Dairy cattle Milking control Test day |
topic |
Animal breeding Dairy cattle Milking control Test day |
description |
Data from 32,779 monthly milk production, from 3,605 lactations until 305 days (PL305), from 2,082 Gir cows, sired by 281 bulls, calving from 1987 to 1999, in 11 herds, were used to verify the viability of using daily milk production control (PLDC) to perform genetic evaluations within Gir breed. Bivariate analysis on PLDC1 to PLDC10 and PL305 were performed utilizing the restricted maximum likelihood method within an animal model, which included the three first lactations as replicate measures of the same dams unit. Animals were grouped according to the criterion of contemporaneous group of herd-year-season, and according to calving-age and to the interval calving-first control in PLDC1. The observed averages (kg) and the respective standard deviations for PLDC1 at PLDC10 and PL305 were: 11.97±4.64; 11.93±4.68; 10.98±4.40; 10.18±4.12; 9.66±3.88; 9.20±3.69; 8.63±3.51; 8.08±3.33; 7.59±3.27; 7.22±3.15 and 2746.17±1299.90. The average lactation length was 273.72±48.95 days. Heritability estimates for PLDC based on bivariate analysis ranged from 0.24 to 0.14, decreasing from the first to the tenth control; the heritability estimate for PL305 was 0.19. Estimates of the genetic correlations between PLDC and PL305 varied from 0.85 to 1.00. The estimates of the genetic correlations between PLDC1 to PLDC9 with PLDC6 to PLDC10 were greater than 0.80, except the correlations between PLDC9 with PLDC1, PLDC10 with PLDC1, PLDC2, PLDC3 and PLDC6. The estimates of the phenotypic correlations resulting in intermediate value between genetic and environmental correlations (smaller). The results of genetic trend indicate that indirect selection for PLDC2 to PLDC4 was more efficient than direct selection for PL305. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-09-01 2022-04-29T08:47:12Z 2022-04-29T08:47:12Z |
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 |
Revista Brasileira de Zootecnia, v. 31, n. 5, p. 1953-1963, 2002. 0100-4859 http://hdl.handle.net/11449/231716 2-s2.0-0041385718 |
identifier_str_mv |
Revista Brasileira de Zootecnia, v. 31, n. 5, p. 1953-1963, 2002. 0100-4859 2-s2.0-0041385718 |
url |
http://hdl.handle.net/11449/231716 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Brasileira de Zootecnia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1953-1963 |
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_ |
1803045184798195712 |