Unknown parent groups and truncated pedigree in single-step genomic evaluations of Murrah buffaloes

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de Sergipe (UFS)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Guelph-
Autor(es): dc.contributorPurdue University-
Autor(es): dc.contributorBrazilian Association of Girolando Breeders-
Autor(es): dc.creatorMelo, T. P.-
Autor(es): dc.creatorZwirtes, A. K.-
Autor(es): dc.creatorSilva, A. A.-
Autor(es): dc.creatorLázaro, S. F.-
Autor(es): dc.creatorOliveira, H. R.-
Autor(es): dc.creatorSilveira, K. R.-
Autor(es): dc.creatorSantos, J. C.G.-
Autor(es): dc.creatorAndrade, W. B.F.-
Autor(es): dc.creatorKluska, S.-
Autor(es): dc.creatorEvangelho, L. A.-
Autor(es): dc.creatorOliveira, H. N.-
Autor(es): dc.creatorTonhati, H.-
Data de aceite: dc.date.accessioned2025-08-21T18:25:20Z-
Data de disponibilização: dc.date.available2025-08-21T18:25:20Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3168/jds.2023-24608-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/306358-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/306358-
Descrição: dc.descriptionMissing pedigrees may produce bias in genomic evaluations. Thus, strategies to deal with this problem have been proposed as using unknown parent groups (UPG) or truncated pedigrees. The aim of this study was to investigate the impact of modeling missing pedigrees under single-step genomic best linear unbiased prediction (ssGBLUP) evaluations for productive and reproductive traits in dairy buffalo using different approaches: (1) traditional BLUP without UPG (BLUP), (2) traditional BLUP including UPG (BLUP/UPG), (3) ssGBLUP without UPG (ssGBLUP), (4) ssGBLUP including UPG in the A and A22 matrices (ssGBLUP/A_UPG), (5) ssGBLUP including UPG in all elements of the H matrix (ssGBLUP/H_UPG), (6) BLUP with pedigree truncation for the last 3 generations (BLUP/truncated), and (7) ssGBLUP with pedigree truncation for the last 3 generations (ssGBLUP/truncated). Unknown parent groups were not used in the scenarios with truncated pedigree. A total of 3,717, 4,126, and 3,823 records of the first lactation for accumulated 305-d milk yield (MY), age at first calving (AFC), and lactation length (LL), respectively, were used. Accuracies ranged from 0.27 for LL (BLUP) to 0.46 for MY (BLUP), bias ranged from −0.62 for MY (ssGBLUP) to 0.0002 for AFC (BLUP/truncated), and dispersion ranged from 0.88 for MY (BLUP/A_UPG) to 1.13 for LL (BLUP). Genetic trend showed genetic gains for all traits across 20 years of selection, and the impact of including genomic information, UPG, or pedigree truncation under GEBV accuracies ranged among the evaluated traits. Overall, methods using UPG, truncation pedigree, and genomic information exhibited potential to improve GEBV accuracies, bias, and dispersion for all traits compared with other methods. Truncated scenarios promoted high genetic gains. In small populations with few genotyped animals, combining truncated pedigree or UPG with genomic information is a feasible approach to deal with missing pedigrees.-
Descrição: dc.descriptionDepartament of Animal Science Federal University of Santa Maria (UFSM), Rio Grande do Sul-
Descrição: dc.descriptionDepartament of Animal Science São Paulo State University (UNESP), São Paulo-
Descrição: dc.descriptionDepartment of Animal Biosciences University of Guelph-
Descrição: dc.descriptionDepartament of Animal Sciences Purdue University-
Descrição: dc.descriptionBrazilian Association of Girolando Breeders, Minas Gerais-
Descrição: dc.descriptionDepartament of Animal Science São Paulo State University (UNESP), São Paulo-
Formato: dc.format8130-8140-
Idioma: dc.languageen-
Relação: dc.relationJournal of Dairy Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectaccuracy-
Palavras-chave: dc.subjectage at first calving-
Palavras-chave: dc.subjectbias-
Palavras-chave: dc.subjectlactation length-
Palavras-chave: dc.subjectmilk yield-
Título: dc.titleUnknown parent groups and truncated pedigree in single-step genomic evaluations of Murrah buffaloes-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.