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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
05/10/2010 |
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Data da última atualização: |
30/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BALDI, F.; ALBUQUERQUE, L. G.; ALENCAR, M. M. de. |
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Afiliação: |
FERNANDO BALDI, UNESP/JABOTICABAL; LUCIA G. ALBUQUERQUE, UNESP/JABOTICABAL; MAURICIO MELLO DE ALENCAR, CPPSE. |
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Título: |
Random regression models on Legendre polynomials to estimate genetic parameters for weights from birth to adult age in Canchim cattle. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Journal of Animal Breeding and Genetics, v. 127, n. 4, p. 289-299, 2010 |
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Idioma: |
Português |
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Conteúdo: |
The objective of this work was to estimate covariance functions for direct and maternal genetic effects, animal and maternal permanent environmental effects, and subsequently, to derive relevant genetic parameters for growth traits in Canchim cattle. Data comprised 49 011 weight records on 2435 females from birth to adult age. The model of analysis included fixed effects of contemporary groups (year and month of birth and at weighing) and age of dam as quadratic covariable. Mean trends were taken into account by a cubic regression on orthogonal polynomials of animal age. Residual variances were allowed to vary and were modelled by a step function with 1, 4 or 11 classes based on animal's age. The model fitting four classes of residual variances was the best. A total of 12 random regression models from second to seventh order were used to model direct and maternal genetic effects, animal and maternal permanent environmental effects. The model with direct and maternal genetic effects, animal and maternal permanent environmental effects fitted by quadric, cubic, quintic and linear Legendre polynomials, respectively, was the most adequate to describe the covariance structure of the data. Estimates of direct and maternal heritability obtained by multi-trait (seven traits) and random regression models were very similar. Selection for higher weight at any age, especially after weaning, will produce an increase in mature cow weight. The possibility to modify the growth curve in Canchim cattle to obtain animals with rapid growth at early ages and moderate to low mature cow weight is limited. MenosThe objective of this work was to estimate covariance functions for direct and maternal genetic effects, animal and maternal permanent environmental effects, and subsequently, to derive relevant genetic parameters for growth traits in Canchim cattle. Data comprised 49 011 weight records on 2435 females from birth to adult age. The model of analysis included fixed effects of contemporary groups (year and month of birth and at weighing) and age of dam as quadratic covariable. Mean trends were taken into account by a cubic regression on orthogonal polynomials of animal age. Residual variances were allowed to vary and were modelled by a step function with 1, 4 or 11 classes based on animal's age. The model fitting four classes of residual variances was the best. A total of 12 random regression models from second to seventh order were used to model direct and maternal genetic effects, animal and maternal permanent environmental effects. The model with direct and maternal genetic effects, animal and maternal permanent environmental effects fitted by quadric, cubic, quintic and linear Legendre polynomials, respectively, was the most adequate to describe the covariance structure of the data. Estimates of direct and maternal heritability obtained by multi-trait (seven traits) and random regression models were very similar. Selection for higher weight at any age, especially after weaning, will produce an increase in mature cow weight. The possibility to modify the growth curve in Canc... Mostrar Tudo |
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Palavras-Chave: |
Covariance functions; Growth curve; Legendre polynomials. |
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Thesaurus Nal: |
beef cattle. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02257naa a2200193 a 4500
001 1863661
005 2023-06-30
008 2010 bl uuuu u00u1 u #d
100 1 $aBALDI, F.
245 $aRandom regression models on Legendre polynomials to estimate genetic parameters for weights from birth to adult age in Canchim cattle.$h[electronic resource]
260 $c2010
520 $aThe objective of this work was to estimate covariance functions for direct and maternal genetic effects, animal and maternal permanent environmental effects, and subsequently, to derive relevant genetic parameters for growth traits in Canchim cattle. Data comprised 49 011 weight records on 2435 females from birth to adult age. The model of analysis included fixed effects of contemporary groups (year and month of birth and at weighing) and age of dam as quadratic covariable. Mean trends were taken into account by a cubic regression on orthogonal polynomials of animal age. Residual variances were allowed to vary and were modelled by a step function with 1, 4 or 11 classes based on animal's age. The model fitting four classes of residual variances was the best. A total of 12 random regression models from second to seventh order were used to model direct and maternal genetic effects, animal and maternal permanent environmental effects. The model with direct and maternal genetic effects, animal and maternal permanent environmental effects fitted by quadric, cubic, quintic and linear Legendre polynomials, respectively, was the most adequate to describe the covariance structure of the data. Estimates of direct and maternal heritability obtained by multi-trait (seven traits) and random regression models were very similar. Selection for higher weight at any age, especially after weaning, will produce an increase in mature cow weight. The possibility to modify the growth curve in Canchim cattle to obtain animals with rapid growth at early ages and moderate to low mature cow weight is limited.
650 $abeef cattle
653 $aCovariance functions
653 $aGrowth curve
653 $aLegendre polynomials
700 1 $aALBUQUERQUE, L. G.
700 1 $aALENCAR, M. M. de
773 $tJournal of Animal Breeding and Genetics$gv. 127, n. 4, p. 289-299, 2010
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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Biblioteca |
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| Registros recuperados : 51 | |
| 9. |  | CAMARGO, G. M. F. de; COSTA, R. B.; ALBUQUERQUE, L. G.; REGITANO, L. C. de A.; BALDI, F.; TONHATI, H. Association between JY-1 gene polymorphisms and reproductive traits in beef cattle. Gene, v. 533, n. 2, p. 477-480, jan. 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 10. | | SOARES, B. B.; BRUNES, L. C.; BALDI, F.; NARCISO, M. G.; CARMO, A. S. do; MAGNABOSCO, C. U. Associação genética entre escores visuais e características reprodutivas em bovinos Nelore. In: SEMINÁRIO JOVENS TALENTOS, 16., 2022, Santo Antônio de Goiás. Resumos... Brasília, DF: Embrapa; Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2022. p. 74.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados. |
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| 11. | | SOARES, B. B.; BRUNES, L. C.; BALDI, F.; NARCISO, M. G.; CARMO, A. S. do; MAGNABOSCO, C. U. Associação genética entre escores visuais e características reprodutivas em bovinos Nelore. In: SEMINÁRIO JOVENS TALENTOS, 16., 2022, Santo Antônio de Goiás. Resumos... Brasília, DF: Embrapa; Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2022. p. 74.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 14. | | BRUNES, L. C.; BALDI, F.; NARCISO, M. G.; LOBO, R. B.; ESPIGOLAN, R.; COSTA, M. F. O.; MAGNABOSCO, C. U. Genomic prediction ability for feed efficiency traits using different models and pseudo-phenotypes under several validation strategies in Nelore cattle. Animal. The International Journal of Animal Biosciences, v. 15, 100085, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Arroz e Feijão; Embrapa Cerrados. |
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| 15. | | BRUNES, L. C.; BALDI, F.; COSTA, M. F. O. e; LOBO, R. B.; LOPES, F. B.; MAGNABOSCO, C. U. Genetic-quantitative analysis for reproductive traits in Nellor cattle selected for sexual precocity. Animal Production Science, v. 60, n. 7, p. 896-902, Mar. 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Arroz e Feijão; Embrapa Cerrados. |
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| 16. | | PERIPOLLI, E.; MUNARI, D. P.; SILVA, M. V. G. B.; LIMA, A. L.; IRGANG, R.; BALDI, F. Runs of homozygosity: current knowledge and applications in livestock. Animal Genetics, v. 48, n. 3, p. 255-271, 2017. Publicado online em 1 dez. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 17. | | BUZANSKAS, M. E.; GROSSI, D. do A.; VENTURINI, G. C.; BALDI, F.; MUNARI, D. P.; ALENCAR, M. M. de. Estimativas de parâmetros genéticos para características reprodutivas e de crescimento em bovinos Canchim por método Bayesiano. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 46., 2009, Maringá. Anais...Maringa: SBZ:UEM, 2009.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 18. | | BALDI, F.; FIGUEIREDO, L. G.; OLIVEIRA, H. N. de; MAGNABOSCO, C. de U.; BEZERRA, L. A. F.; FARIA, C. U.; LOBO, R. B. Bioeconomic selection index (EMGTe) for Nellore Brazil breeding program. In: International Conference on Quantitative Genetics, 5., 2016, Madison. Proceedings... Madison , 2016. (ICQG5)| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Cerrados. |
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| 19. | | VENTURINI, G. C.; STAFUZZA, N. B.; CARDOSO, D. F.; BALDI, F.; LEDUR, M. C.; DANTAS, J. de O.; EL FARO, L.; MUNARI, D. P. Association between ACTA1 candidate gene and performance, organs and carcass traits in broilers. Poultry Science, 16 out. 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| 20. | | PERIPOLLI, E.; STAFUZZA, N. B.; MACHADO, M. A.; PANETTO, J. C. do C.; EGITO, A. A. do; BALDI, F.; SILVA, M. V. G. B. Assessment of copy number variants in three Brazilian locally adapted cattle breeds using whole-genome re-sequencing data. Animal Genetics, v. 54, n. 3, p. 254-270, 2023.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Gado de Leite. |
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| Registros recuperados : 51 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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