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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Amazônia Oriental; Embrapa Gado de Corte; Embrapa Pecuária Sudeste. |
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Data corrente: |
29/12/2016 |
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Data da última atualização: |
30/03/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BIASE, A. G.; DIAS, C. T. dos S.; BARIONI, L. G.; ALBERTINI, T. Z.; MARTORANO, L. G.; OLTJEN, J. W.; LANNA, D. P. D.; OLIVEIRA, P. P. A.; MEDEIROS, S. R. de; TORRES JUNIOR, R. A. de A. |
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Afiliação: |
ADRIELE GIARETTA BIASE, Esalq/USP; CARLOS TADEU DOS SANTOS DIAS, Esalq/USP; LUIS GUSTAVO BARIONI, CNPTIA; TIAGO ZANETT ALBERTINI, Esalq/USP; LUCIETA GUERREIRO MARTORANO, CPATU; JAMES W. OLTJEN, University of California; DANTE PAZZANESE DUARTE LANNA, Esalq/USP; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; SERGIO RAPOSO DE MEDEIROS, CNPGC; ROBERTO AUGUSTO DE ALMEIDA TORRES JUNIOR, CNPGC. |
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Título: |
Parametrization of the Davis Growth Model using data of crossbred zebu cattle. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Scientia Agricola, v. 74, n. 1, p.8-17, Jan./Feb. 2017. |
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DOI: |
http://dx.doi.org/10.1590/1678-992X-2015-0284 |
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Idioma: |
Inglês |
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Conteúdo: |
The system of differential equations proposed by Oltjen et al. [1986, named Davis Growth Model (DGM)] to represent cattle growth has been parameterized with data from Bos taurus (British) and Bos indicus (Nellore) breeds. The DGM has been successfully used for simulation and decision support in the United States. However, the effect of about 30 years of genetic improvement and the use of different breeds may affect the model parameter values, which also may need to be re-estimated for crossbred animals. The aim of this study was to estimate parameter values and confidence intervals for the DGM with growth and body composition data from Zebu crossbred animals. Confidence intervals and asymptotic distribution were generated through nonparametric bootstrap with data from a field experiment conducted in Brazil. The parameters showed normal probability distribution for most scenarios. The rate constant for deoxyribonucleic acid (DNA) synthesis had a minimum increase of 156 % and the maximum of 389 %, compared to the original values and the maintenance requirement had a minimum increase of 126 % and maximum of 160 % compared to the original values. Lower limits of 95 % confidence intervals for the parameters related to maintenance and protein accretion rates were higher than the original estimates of the DGM, evidencing genetic differences of the Zebu crossbred animals in relation to the original DGM parameters. |
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Palavras-Chave: |
Asymptotic distribution; Calibração; Calibrating; Cattle growth; Crescimento do gado; Distribuição assintótica; Equações diferenciais ordinárias; Modelo de crescimento; Nonparametric bootstrap; Ordinary differential equations. |
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Thesagro: |
Ácido nucleico; Agricultura; DNA; Gado zebu; Modelo Matemático. |
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Thesaurus Nal: |
Beef cattle; Cattle; Mathematical models; Zebu. |
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Categoria do assunto: |
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L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/152540/1/AP-parametrization-Biase.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/165135/1/Parametrization-of-the-Davis-Growth-Model.pdf
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Marc: |
LEADER 02816naa a2200469 a 4500
001 2059601
005 2017-03-30
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/1678-992X-2015-0284$2DOI
100 1 $aBIASE, A. G.
245 $aParametrization of the Davis Growth Model using data of crossbred zebu cattle.$h[electronic resource]
260 $c2017
520 $aThe system of differential equations proposed by Oltjen et al. [1986, named Davis Growth Model (DGM)] to represent cattle growth has been parameterized with data from Bos taurus (British) and Bos indicus (Nellore) breeds. The DGM has been successfully used for simulation and decision support in the United States. However, the effect of about 30 years of genetic improvement and the use of different breeds may affect the model parameter values, which also may need to be re-estimated for crossbred animals. The aim of this study was to estimate parameter values and confidence intervals for the DGM with growth and body composition data from Zebu crossbred animals. Confidence intervals and asymptotic distribution were generated through nonparametric bootstrap with data from a field experiment conducted in Brazil. The parameters showed normal probability distribution for most scenarios. The rate constant for deoxyribonucleic acid (DNA) synthesis had a minimum increase of 156 % and the maximum of 389 %, compared to the original values and the maintenance requirement had a minimum increase of 126 % and maximum of 160 % compared to the original values. Lower limits of 95 % confidence intervals for the parameters related to maintenance and protein accretion rates were higher than the original estimates of the DGM, evidencing genetic differences of the Zebu crossbred animals in relation to the original DGM parameters.
650 $aBeef cattle
650 $aCattle
650 $aMathematical models
650 $aZebu
650 $aÁcido nucleico
650 $aAgricultura
650 $aDNA
650 $aGado zebu
650 $aModelo Matemático
653 $aAsymptotic distribution
653 $aCalibração
653 $aCalibrating
653 $aCattle growth
653 $aCrescimento do gado
653 $aDistribuição assintótica
653 $aEquações diferenciais ordinárias
653 $aModelo de crescimento
653 $aNonparametric bootstrap
653 $aOrdinary differential equations
700 1 $aDIAS, C. T. dos S.
700 1 $aBARIONI, L. G.
700 1 $aALBERTINI, T. Z.
700 1 $aMARTORANO, L. G.
700 1 $aOLTJEN, J. W.
700 1 $aLANNA, D. P. D.
700 1 $aOLIVEIRA, P. P. A.
700 1 $aMEDEIROS, S. R. de
700 1 $aTORRES JUNIOR, R. A. de A.
773 $tScientia Agricola$gv. 74, n. 1, p.8-17, Jan./Feb. 2017.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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| 1. |  | BIASE, A. G.; DIAS, C. T. dos S.; BARIONI, L. G.; ALBERTINI, T. Z.; MARTORANO, L. G.; OLTJEN, J. W.; LANNA, D. P. D.; OLIVEIRA, P. P. A.; MEDEIROS, S. R. de; TORRES JUNIOR, R. A. de A. Parametrization of the Davis Growth Model using data of crossbred zebu cattle. Scientia Agricola, v. 74, n. 1, p.8-17, Jan./Feb. 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Amazônia Oriental; Embrapa Gado de Corte; Embrapa Pecuária Sudeste. |
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| Registros recuperados : 1 | |
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