Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in Brazil
Autor(a) principal: | |
---|---|
Data de Publicação: | 2007 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4081%2Fijas.2007.s2.368 http://www.aspajournal.it/index.php/ijas/article/view/ijas.2007.s2.368 http://hdl.handle.net/11449/39256 |
Resumo: | The objectives of this study were to estimate genetic parameters for test-day 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. |
id |
UNSP_ffb4b0a7ffa7e79fe1d8802a3140a16d |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/39256 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Genetic parameters estimates for milk, fat and protein yield analyzed by test day models for Murrah buffaloes in BrazilPhenotypic correlation estimatesGenetic correlation estimatesHeritability estimatesThe objectives of this study were to estimate genetic parameters for test-day 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.UNESP, FCAV, Univ São Paulo State, Dept Anim Sci, BR-14884900 Jaboticabal, SP, BrazilUNESP, FCAV, Univ São Paulo State, Dept Anim Sci, BR-14884900 Jaboticabal, SP, BrazilPagepress PublUniversidade Estadual Paulista (Unesp)Aspilcueta-Borquis, R. [UNESP]Tanaka, A. [UNESP]Albuquerque, L. [UNESP]Sesana, R. [UNESP]Seno, L. [UNESP]Bignardi, A. [UNESP]Tonhati, Humberto [UNESP]2014-05-20T15:29:45Z2014-05-20T15:29:45Z2007-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article368-371application/pdfhttp://dx.doi.org/10.4081%2Fijas.2007.s2.368http://www.aspajournal.it/index.php/ijas/article/view/ijas.2007.s2.368Italian Journal of Animal Science. Pavia: Pagepress Publ, v. 6, p. 368-371, 2007.1594-4077http://hdl.handle.net/11449/3925610.4081%2Fijas.2007.s2.368WOS:000207598400058WOS000207598400058.pdf7445254960858159Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengItalian Journal of Animal Science0.9900,434info:eu-repo/semantics/openAccess2023-12-29T06:18:13Zoai:repositorio.unesp.br:11449/39256Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-29T06:18:13Repositório 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] Phenotypic correlation estimates Genetic correlation estimates Heritability 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, Humberto [UNESP] |
author_role |
author |
author2 |
Tanaka, A. [UNESP] Albuquerque, L. [UNESP] Sesana, R. [UNESP] Seno, L. [UNESP] Bignardi, A. [UNESP] Tonhati, Humberto [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
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, Humberto [UNESP] |
dc.subject.por.fl_str_mv |
Phenotypic correlation estimates Genetic correlation estimates Heritability estimates |
topic |
Phenotypic correlation estimates Genetic correlation estimates Heritability estimates |
description |
The objectives of this study were to estimate genetic parameters for test-day 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 |
2007-01-01 2014-05-20T15:29:45Z 2014-05-20T15:29:45Z |
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%2Fijas.2007.s2.368 http://www.aspajournal.it/index.php/ijas/article/view/ijas.2007.s2.368 Italian Journal of Animal Science. Pavia: Pagepress Publ, v. 6, p. 368-371, 2007. 1594-4077 http://hdl.handle.net/11449/39256 10.4081%2Fijas.2007.s2.368 WOS:000207598400058 WOS000207598400058.pdf 7445254960858159 |
url |
http://dx.doi.org/10.4081%2Fijas.2007.s2.368 http://www.aspajournal.it/index.php/ijas/article/view/ijas.2007.s2.368 http://hdl.handle.net/11449/39256 |
identifier_str_mv |
Italian Journal of Animal Science. Pavia: Pagepress Publ, v. 6, p. 368-371, 2007. 1594-4077 10.4081%2Fijas.2007.s2.368 WOS:000207598400058 WOS000207598400058.pdf 7445254960858159 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Italian Journal of Animal Science 0.990 0,434 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
368-371 application/pdf |
dc.publisher.none.fl_str_mv |
Pagepress Publ |
publisher.none.fl_str_mv |
Pagepress Publ |
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 |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965445553389568 |