Genetic principal components for reproductive and productive traits in Holstein cows reared under tropical conditions

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorFdn Univ Agr Colombia-
Autor(es): dc.contributorInst Zootecnia-
Autor(es): dc.creatorDominguez-Castano, Pablo [UNESP]-
Autor(es): dc.creatorToro Ospina, Alejandra Maria-
Autor(es): dc.creatorEl Faro, Lenira-
Autor(es): dc.creatorVasconcelos Silva, Josineudson Augusto de [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:58:33Z-
Data de disponibilização: dc.date.available2022-02-22T00:58:33Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s11250-021-02639-w-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/210103-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/210103-
Descrição: dc.descriptionThe objective of this study was to compare the standard multi-trait model and five reduced-rank models fitted to the first principal components and genetic parameter estimates in order to determine the most appropriate method to model the covariance structure of reproductive and productive traits in Brazilian Holstein cows. Individual records of the following traits from 5217 cows were analyzed: 305-day milk yield (MY305), peak yield, milk yield per day of calving interval, days from calving to first estrus, days from calving to last service (CLS), calving interval (CI), and gestation length. Schwarz's Bayesian information criterion was used to compare the different models. The results indicated that four principal components were necessary to model the genetic (co)variance structure, reducing the number of parameters to be estimated. Analysis of genetic and phenotypic correlations showed that milk production-related traits were strongly correlated with each other (ranging from 0.74 to 0.99), while the correlation of these traits with the reproductive traits was weak (ranging from - 0.14 to 0.27). Heritability estimates for the traits ranged from 0.03 to 0.18. The reproductive traits CLS and CI and the production trait MY305 should be included as selection criteria in dairy cattle breeding programs because they are correlated with the first two principal components, retaining 91% of the genetic variability of the data.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionUniv Estadual Paulista, Dept Zootecnia, Fac Ciencias Agr & Vet, BR-14884900 Jaboticabal, SP, Brazil-
Descrição: dc.descriptionFdn Univ Agr Colombia, Fac Med Vet, Bogota 111166, Colombia-
Descrição: dc.descriptionInst Zootecnia, BR-14160900 Sertaozinho, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Dept Melhoramento & Nutr Anim, Fac Med Vet & Zootecnia, BR-18618000 Botucatu, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Dept Zootecnia, Fac Ciencias Agr & Vet, BR-14884900 Jaboticabal, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Dept Melhoramento & Nutr Anim, Fac Med Vet & Zootecnia, BR-18618000 Botucatu, SP, Brazil-
Descrição: dc.descriptionCAPES: 001-
Formato: dc.format8-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Relação: dc.relationTropical Animal Health And Production-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectDairy cattle-
Palavras-chave: dc.subjectProduction-
Palavras-chave: dc.subjectReduced-rank model-
Palavras-chave: dc.subjectReproduction-
Palavras-chave: dc.subjectVariance components-
Título: dc.titleGenetic principal components for reproductive and productive traits in Holstein cows reared under tropical conditions-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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