Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle.
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133418 https://doi.org/10.37496/rbz5020200085 |
Resumo: | The objective of this study was to estimate the breed, heterosis, and recombination effects on different components of the lactation curve of Girolando cattle. The dataset used consisted of 12,121 purebred cows of Holstein (H) and Gyr (G) breeds, and six H×G crossbred cows (Girolando). The model used presents random effects of herd and cow, regression coefficient associated with linear effect of proportion of H breed, regression coefficient associated with the linear effect of heterosis between H and G breeds, regression coefficient associated with the linear effect of recombination between H and G breeds, and random effect of residual. Dijkstra?s (DJ), Nelder's (ND), Wilmink's (WL), and Wood's (WD) models were tested to fit production records of these different genetic groups. These models were then tested according to evaluation criteria of quality of fit (AIC, BIC, and RMSE), and the two best models (WD and WL) were chosen for estimation of 305-day milk yield (MY305), peak yield, time to peak, and persistency of milk yield. The breed effect was significant for all traits and components of the lactation curve. The heterosis effect was significant for all traits, and was more significant for MY305 (945.62±79.17 kg). Peak yield was the component of lactation curve that presented the most significant heterosis effect, partially explaining the heterosis effect (12 to 21%) found for MY305. The recombination effect was positive only for lactation period and time to peak of lactation in Girolando cows. |
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Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle.Rendimento máximoPersistênciaHeteroseGado LeiteiroCruzamento AnimalRaçaCurva de LactaçãoGirolandoThe objective of this study was to estimate the breed, heterosis, and recombination effects on different components of the lactation curve of Girolando cattle. The dataset used consisted of 12,121 purebred cows of Holstein (H) and Gyr (G) breeds, and six H×G crossbred cows (Girolando). The model used presents random effects of herd and cow, regression coefficient associated with linear effect of proportion of H breed, regression coefficient associated with the linear effect of heterosis between H and G breeds, regression coefficient associated with the linear effect of recombination between H and G breeds, and random effect of residual. Dijkstra?s (DJ), Nelder's (ND), Wilmink's (WL), and Wood's (WD) models were tested to fit production records of these different genetic groups. These models were then tested according to evaluation criteria of quality of fit (AIC, BIC, and RMSE), and the two best models (WD and WL) were chosen for estimation of 305-day milk yield (MY305), peak yield, time to peak, and persistency of milk yield. The breed effect was significant for all traits and components of the lactation curve. The heterosis effect was significant for all traits, and was more significant for MY305 (945.62±79.17 kg). Peak yield was the component of lactation curve that presented the most significant heterosis effect, partially explaining the heterosis effect (12 to 21%) found for MY305. The recombination effect was positive only for lactation period and time to peak of lactation in Girolando cows.DARLENE DOS SANTOS DALTRO, Universidade Federal do Rio Grande do Sul; ALESSANDRO HAIDUCK PADILHA, Universidade Federal do Rio Grande do Sul; LUÍS TELO DA GAMA, Universidade de Lisboa; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; JAIME ARAUJO COBUCI, Universidade Federal do Rio Grande do Sul.DALTRO, D. dos S.PADILHA, A. H.GAMA, L. T. daSILVA, M. V. G. B.COBUCI, J. A.2021-08-10T19:02:05Z2021-08-10T19:02:05Z2021-08-102021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRevista Brasileira de Zootecnia, v. 50, e20200085, 2021.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133418https://doi.org/10.37496/rbz5020200085enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2021-08-10T19:02:13Zoai:www.alice.cnptia.embrapa.br:doc/1133418Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542021-08-10T19:02:13Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle. |
title |
Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle. |
spellingShingle |
Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle. DALTRO, D. dos S. Rendimento máximo Persistência Heterose Gado Leiteiro Cruzamento Animal Raça Curva de Lactação Girolando |
title_short |
Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle. |
title_full |
Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle. |
title_fullStr |
Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle. |
title_full_unstemmed |
Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle. |
title_sort |
Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle. |
author |
DALTRO, D. dos S. |
author_facet |
DALTRO, D. dos S. PADILHA, A. H. GAMA, L. T. da SILVA, M. V. G. B. COBUCI, J. A. |
author_role |
author |
author2 |
PADILHA, A. H. GAMA, L. T. da SILVA, M. V. G. B. COBUCI, J. A. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
DARLENE DOS SANTOS DALTRO, Universidade Federal do Rio Grande do Sul; ALESSANDRO HAIDUCK PADILHA, Universidade Federal do Rio Grande do Sul; LUÍS TELO DA GAMA, Universidade de Lisboa; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; JAIME ARAUJO COBUCI, Universidade Federal do Rio Grande do Sul. |
dc.contributor.author.fl_str_mv |
DALTRO, D. dos S. PADILHA, A. H. GAMA, L. T. da SILVA, M. V. G. B. COBUCI, J. A. |
dc.subject.por.fl_str_mv |
Rendimento máximo Persistência Heterose Gado Leiteiro Cruzamento Animal Raça Curva de Lactação Girolando |
topic |
Rendimento máximo Persistência Heterose Gado Leiteiro Cruzamento Animal Raça Curva de Lactação Girolando |
description |
The objective of this study was to estimate the breed, heterosis, and recombination effects on different components of the lactation curve of Girolando cattle. The dataset used consisted of 12,121 purebred cows of Holstein (H) and Gyr (G) breeds, and six H×G crossbred cows (Girolando). The model used presents random effects of herd and cow, regression coefficient associated with linear effect of proportion of H breed, regression coefficient associated with the linear effect of heterosis between H and G breeds, regression coefficient associated with the linear effect of recombination between H and G breeds, and random effect of residual. Dijkstra?s (DJ), Nelder's (ND), Wilmink's (WL), and Wood's (WD) models were tested to fit production records of these different genetic groups. These models were then tested according to evaluation criteria of quality of fit (AIC, BIC, and RMSE), and the two best models (WD and WL) were chosen for estimation of 305-day milk yield (MY305), peak yield, time to peak, and persistency of milk yield. The breed effect was significant for all traits and components of the lactation curve. The heterosis effect was significant for all traits, and was more significant for MY305 (945.62±79.17 kg). Peak yield was the component of lactation curve that presented the most significant heterosis effect, partially explaining the heterosis effect (12 to 21%) found for MY305. The recombination effect was positive only for lactation period and time to peak of lactation in Girolando cows. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-08-10T19:02:05Z 2021-08-10T19:02:05Z 2021-08-10 2021 |
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. 50, e20200085, 2021. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133418 https://doi.org/10.37496/rbz5020200085 |
identifier_str_mv |
Revista Brasileira de Zootecnia, v. 50, e20200085, 2021. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133418 https://doi.org/10.37496/rbz5020200085 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1817695614734958592 |