Breed, heterosis, and recombination effects for lactation curves in Brazilian cattle.

Detalhes bibliográficos
Autor(a) principal: DALTRO, D. dos S.
Data de Publicação: 2021
Outros Autores: PADILHA, A. H., GAMA, L. T. da, SILVA, M. V. G. B., COBUCI, J. A.
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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spelling 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
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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)
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instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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