Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil

Detalhes bibliográficos
Autor(a) principal: Aspilcueta-Borquis, R. [UNESP]
Data de Publicação: 2007
Outros Autores: Tanaka, A. [UNESP], Albuquerque, L. [UNESP], Sesana, R. [UNESP], Seno, L. [UNESP], Bignardi, A. [UNESP], Tonhati, H. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.4081/ijas.2007.s2.368
http://hdl.handle.net/11449/226031
Resumo: The objectives of this study were to estimate genetic parameters for testday milk, fat and protein yields, in Murrah buffaloes. In this study 4,757 complete lactations of Murrah buffaloes were analyzed. The (co) variance components were estimated by restricted maximum likelihood using MTDFREML software. The bi-trait animal test-day models included genetic additive direct and permanent environment effects, as random effects, and the fixed effects of contemporary group (herds-year-month of control) and age of the cow at calving as linear and quadratic covariable. The heritability estimate at first control was 0.19, increased until the third control (0.24), decreasing thereafter, reaching the lowest value at the ninth control (0.09). The highest heritability estimates for fat and protein yield were 0.23 (first control) and 0.33 (third control), respectively. For milk yield, genetic and phenotypic correlation estimates ranged from 0.37 to 0.99 and from 0.52 to 0.94, respectively. Genetic correlations were higher than phenotypic ones. For fat and protein yields, genetic correlation estimates ranged from 0.42 to 0.97.
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spelling Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in BrazilGenetic correlation estimatesHeritability estimatesPhenotypic correlation estimatesThe objectives of this study were to estimate genetic parameters for testday milk, fat and protein yields, in Murrah buffaloes. In this study 4,757 complete lactations of Murrah buffaloes were analyzed. The (co) variance components were estimated by restricted maximum likelihood using MTDFREML software. The bi-trait animal test-day models included genetic additive direct and permanent environment effects, as random effects, and the fixed effects of contemporary group (herds-year-month of control) and age of the cow at calving as linear and quadratic covariable. The heritability estimate at first control was 0.19, increased until the third control (0.24), decreasing thereafter, reaching the lowest value at the ninth control (0.09). The highest heritability estimates for fat and protein yield were 0.23 (first control) and 0.33 (third control), respectively. For milk yield, genetic and phenotypic correlation estimates ranged from 0.37 to 0.99 and from 0.52 to 0.94, respectively. Genetic correlations were higher than phenotypic ones. For fat and protein yields, genetic correlation estimates ranged from 0.42 to 0.97.University of São Paulo State FCAV/UNESP Department of Animal Sciences, Jabotical, São Paulo StateLagoa da Serra Company, SertãozinhoUniversity of São Paulo State FCAV/UNESP Department of Animal Sciences, Jabotical, São Paulo StateUniversidade Estadual Paulista (UNESP)Lagoa da Serra CompanyAspilcueta-Borquis, R. [UNESP]Tanaka, A. [UNESP]Albuquerque, L. [UNESP]Sesana, R. [UNESP]Seno, L. [UNESP]Bignardi, A. [UNESP]Tonhati, H. [UNESP]2022-04-28T21:24:26Z2022-04-28T21:24:26Z2007-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article368-371http://dx.doi.org/10.4081/ijas.2007.s2.368Italian Journal of Animal Science, v. 6, n. SUPPL. 2, p. 368-371, 2007.1594-4077http://hdl.handle.net/11449/22603110.4081/ijas.2007.s2.3682-s2.0-77956549166Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengItalian Journal of Animal Scienceinfo:eu-repo/semantics/openAccess2024-06-07T18:45:08Zoai:repositorio.unesp.br:11449/226031Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:07:23.120127Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
title Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
spellingShingle Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
Aspilcueta-Borquis, R. [UNESP]
Genetic correlation estimates
Heritability estimates
Phenotypic correlation estimates
title_short Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
title_full Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
title_fullStr Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
title_full_unstemmed Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
title_sort Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
author Aspilcueta-Borquis, R. [UNESP]
author_facet Aspilcueta-Borquis, R. [UNESP]
Tanaka, A. [UNESP]
Albuquerque, L. [UNESP]
Sesana, R. [UNESP]
Seno, L. [UNESP]
Bignardi, A. [UNESP]
Tonhati, H. [UNESP]
author_role author
author2 Tanaka, A. [UNESP]
Albuquerque, L. [UNESP]
Sesana, R. [UNESP]
Seno, L. [UNESP]
Bignardi, A. [UNESP]
Tonhati, H. [UNESP]
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Lagoa da Serra Company
dc.contributor.author.fl_str_mv Aspilcueta-Borquis, R. [UNESP]
Tanaka, A. [UNESP]
Albuquerque, L. [UNESP]
Sesana, R. [UNESP]
Seno, L. [UNESP]
Bignardi, A. [UNESP]
Tonhati, H. [UNESP]
dc.subject.por.fl_str_mv Genetic correlation estimates
Heritability estimates
Phenotypic correlation estimates
topic Genetic correlation estimates
Heritability estimates
Phenotypic correlation estimates
description The objectives of this study were to estimate genetic parameters for testday milk, fat and protein yields, in Murrah buffaloes. In this study 4,757 complete lactations of Murrah buffaloes were analyzed. The (co) variance components were estimated by restricted maximum likelihood using MTDFREML software. The bi-trait animal test-day models included genetic additive direct and permanent environment effects, as random effects, and the fixed effects of contemporary group (herds-year-month of control) and age of the cow at calving as linear and quadratic covariable. The heritability estimate at first control was 0.19, increased until the third control (0.24), decreasing thereafter, reaching the lowest value at the ninth control (0.09). The highest heritability estimates for fat and protein yield were 0.23 (first control) and 0.33 (third control), respectively. For milk yield, genetic and phenotypic correlation estimates ranged from 0.37 to 0.99 and from 0.52 to 0.94, respectively. Genetic correlations were higher than phenotypic ones. For fat and protein yields, genetic correlation estimates ranged from 0.42 to 0.97.
publishDate 2007
dc.date.none.fl_str_mv 2007-12-01
2022-04-28T21:24:26Z
2022-04-28T21:24:26Z
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/10.4081/ijas.2007.s2.368
Italian Journal of Animal Science, v. 6, n. SUPPL. 2, p. 368-371, 2007.
1594-4077
http://hdl.handle.net/11449/226031
10.4081/ijas.2007.s2.368
2-s2.0-77956549166
url http://dx.doi.org/10.4081/ijas.2007.s2.368
http://hdl.handle.net/11449/226031
identifier_str_mv Italian Journal of Animal Science, v. 6, n. SUPPL. 2, p. 368-371, 2007.
1594-4077
10.4081/ijas.2007.s2.368
2-s2.0-77956549166
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Italian Journal of Animal Science
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 368-371
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
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