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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
24/02/2026 |
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Data da última atualização: |
24/02/2026 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, E. da S.; TEMP, L. B.; GUBIANI, G.; TEODORO, M.; RODRIGUES, G. R. D.; NEGREIROS, M. P. M. de; PEREIRA, L. S.; MAGNABOSCO, C. de U.; BALD, F. |
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Afiliação: |
EDUARDA DA SILVA OLIVEIRA, UNIVERSIDADE DE SÃO PAULO; LARISSA BORDIN TEMP, UNIVERSIDADE DE SÃO PAULO; GABRIEL GUBIANI, UNIVERSIDADE DE SÃO PAULO; MILLER TEODORO, UNIVERSIDADE DE SÃO PAULO; GUSTAVO ROBERTO DIAS RODRIGUES, UNIVERSIDADE DE SÃO PAULO; MARIA PAULA MARINHO DE NEGREIROS, ASSOCIAÇÃO NACIONAL DE CRIADORES E PESQUISADORES; LETÍCIA SILVA PEREIRA, ASSOCIAÇÃO NACIONAL DE CRIADORES E PESQUISADORES; CLAUDIO ULHOA MAGNABOSCO, CPAC; FERNANDO BALD, UNIVERSIDADE DE SÃO PAULO. |
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Título: |
Genetic parameters and genomic prediction for calving ease in primiparous nellore heifers. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
Journal of Animal Breeding and Genetics, v. 142, n. 6, 2025. |
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Páginas: |
p. 643-651 |
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Idioma: |
Inglês |
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Conteúdo: |
The calving ease (CE) trait has recently been introduced in animal breeding programs, and studies on its genetic variability have proven essential for the genetic advancement of animals. An increase in dystocia rates in primiparous heifers has been observed due to the birth of heavier calves. As this is a new trait, no established model exists for its analysis. Thus, this study developed different statistical models to evaluate CE, aiming to estimate genetic parameters and perform genomic predictions for this trait. A total of 39,664 records of CE from primiparous Nellore heifers born between 2010 and 2017 were collected, belonging to the animal breeding program of the Nellore breed in Brazil, managed by the National Association of Breeders and Researchers (ANCP, Ribeirão Preto, Brazil). The results showed that direct heritability estimates ranged from 0.11 to 0.24, while maternal heritability estimates ranged from 0.09 to 0.11. Despite these low to moderate heritability estimates, the trait has potential for direct selection. Models incorporating the heifer category (HC) (early or traditional) and birth weight (BW), as well as the dam age at calving (DAC) and BW, were more suitable for estimating variance components. On the other hand, the model that considered only the HC and the model that included the DAC excelled in predictive ability, making them more appropriate for genomic predictions. |
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Thesaurus Nal: |
Birth weight; Calving; Dystocia; Genomics; Nellore. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02225naa a2200289 a 4500
001 2184607
005 2026-02-24
008 2025 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, E. da S.
245 $aGenetic parameters and genomic prediction for calving ease in primiparous nellore heifers.$h[electronic resource]
260 $c2025
300 $ap. 643-651
520 $aThe calving ease (CE) trait has recently been introduced in animal breeding programs, and studies on its genetic variability have proven essential for the genetic advancement of animals. An increase in dystocia rates in primiparous heifers has been observed due to the birth of heavier calves. As this is a new trait, no established model exists for its analysis. Thus, this study developed different statistical models to evaluate CE, aiming to estimate genetic parameters and perform genomic predictions for this trait. A total of 39,664 records of CE from primiparous Nellore heifers born between 2010 and 2017 were collected, belonging to the animal breeding program of the Nellore breed in Brazil, managed by the National Association of Breeders and Researchers (ANCP, Ribeirão Preto, Brazil). The results showed that direct heritability estimates ranged from 0.11 to 0.24, while maternal heritability estimates ranged from 0.09 to 0.11. Despite these low to moderate heritability estimates, the trait has potential for direct selection. Models incorporating the heifer category (HC) (early or traditional) and birth weight (BW), as well as the dam age at calving (DAC) and BW, were more suitable for estimating variance components. On the other hand, the model that considered only the HC and the model that included the DAC excelled in predictive ability, making them more appropriate for genomic predictions.
650 $aBirth weight
650 $aCalving
650 $aDystocia
650 $aGenomics
650 $aNellore
700 1 $aTEMP, L. B.
700 1 $aGUBIANI, G.
700 1 $aTEODORO, M.
700 1 $aRODRIGUES, G. R. D.
700 1 $aNEGREIROS, M. P. M. de
700 1 $aPEREIRA, L. S.
700 1 $aMAGNABOSCO, C. de U.
700 1 $aBALD, F.
773 $tJournal of Animal Breeding and Genetics$gv. 142, n. 6, 2025.
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| 1. |  | OLIVEIRA, E. da S.; TEMP, L. B.; GUBIANI, G.; TEODORO, M.; RODRIGUES, G. R. D.; NEGREIROS, M. P. M. de; PEREIRA, L. S.; MAGNABOSCO, C. de U.; BALD, F. Genetic parameters and genomic prediction for calving ease in primiparous nellore heifers. Journal of Animal Breeding and Genetics, v. 142, n. 6, 2025. p. 643-651| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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