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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
18/03/2003 |
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Data da última atualização: |
18/03/2003 |
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Autoria: |
MAGNABOSCO, C. D. U.; OJALA, M.; LOS REYES, A. de; SAINZ, R. D.; FERNANDES, A.; FAMULA, T. R. |
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Título: |
Estimates of environmental effects and genetic parameters for body measurements and weight in Brahaman cattle raised in Mexico. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Journal of Animal Breeding and Genetics, Berlin, v. 119, p. 221-228, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
A Derivative Free Restricted Maximum Likelihood (DFREML) algorithm was used with single trait and two animal models to estimate the variance and covariance components and thus, heritabilities and phenotypic, genetic and environmental correlations among nine different body measurements and weights of Brahman cattle raised in Mexico. The following measurements were considered: hip width, pin width, hip-pin width, anterior height, posterior height, body lenght, thorax perimeter, scrotal, circumference and weight. The analysis was based on a total of 1018 animals, born between 1992 and 1995, from 17 herds in the Mexico States of Chiapas, San Luis Potosi, Tabasco, Tamaulipas and Veracruz. The model included the following fixed effects: herd, year-season of birth, sex, age of the animal and feed management. The only random effect was the direct additive genetic contribuition of each animal. All fixed effects in the model were significant for all traits (p<0.05). Estimated heritabilities for the traits were: hip width 0.57, pin width 0.32, hip-pin width 0.41, anterior height 0.56, posterior height 0.54, body lenght 0.32, thorax perimeter 0.49, scrotal circumference 0.02 and weigth 0.66. The magnitude of the heritabilities was medium to high, with the exception of scrotal circumference. The genetic correlations among all body measurements were consistently positive and high, ranging from 0.64 to 1.00. Although other measures showed higher genetic correlations with weight, thorax perimeter combines a high value (0.70) with ease and repeatability, making it a useful field measurement to estimate body weight when scales are not available. MenosA Derivative Free Restricted Maximum Likelihood (DFREML) algorithm was used with single trait and two animal models to estimate the variance and covariance components and thus, heritabilities and phenotypic, genetic and environmental correlations among nine different body measurements and weights of Brahman cattle raised in Mexico. The following measurements were considered: hip width, pin width, hip-pin width, anterior height, posterior height, body lenght, thorax perimeter, scrotal, circumference and weight. The analysis was based on a total of 1018 animals, born between 1992 and 1995, from 17 herds in the Mexico States of Chiapas, San Luis Potosi, Tabasco, Tamaulipas and Veracruz. The model included the following fixed effects: herd, year-season of birth, sex, age of the animal and feed management. The only random effect was the direct additive genetic contribuition of each animal. All fixed effects in the model were significant for all traits (p<0.05). Estimated heritabilities for the traits were: hip width 0.57, pin width 0.32, hip-pin width 0.41, anterior height 0.56, posterior height 0.54, body lenght 0.32, thorax perimeter 0.49, scrotal circumference 0.02 and weigth 0.66. The magnitude of the heritabilities was medium to high, with the exception of scrotal circumference. The genetic correlations among all body measurements were consistently positive and high, ranging from 0.64 to 1.00. Although other measures showed higher genetic correlations with weight, thorax per... Mostrar Tudo |
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Thesagro: |
Bovino; Cerrado; Gado; Genética. |
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Categoria do assunto: |
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Marc: |
LEADER 02331naa a2200229 a 4500
001 1566513
005 2003-03-18
008 2002 bl --- 0-- u #d
100 1 $aMAGNABOSCO, C. D. U.
245 $aEstimates of environmental effects and genetic parameters for body measurements and weight in Brahaman cattle raised in Mexico.
260 $c2002
520 $aA Derivative Free Restricted Maximum Likelihood (DFREML) algorithm was used with single trait and two animal models to estimate the variance and covariance components and thus, heritabilities and phenotypic, genetic and environmental correlations among nine different body measurements and weights of Brahman cattle raised in Mexico. The following measurements were considered: hip width, pin width, hip-pin width, anterior height, posterior height, body lenght, thorax perimeter, scrotal, circumference and weight. The analysis was based on a total of 1018 animals, born between 1992 and 1995, from 17 herds in the Mexico States of Chiapas, San Luis Potosi, Tabasco, Tamaulipas and Veracruz. The model included the following fixed effects: herd, year-season of birth, sex, age of the animal and feed management. The only random effect was the direct additive genetic contribuition of each animal. All fixed effects in the model were significant for all traits (p<0.05). Estimated heritabilities for the traits were: hip width 0.57, pin width 0.32, hip-pin width 0.41, anterior height 0.56, posterior height 0.54, body lenght 0.32, thorax perimeter 0.49, scrotal circumference 0.02 and weigth 0.66. The magnitude of the heritabilities was medium to high, with the exception of scrotal circumference. The genetic correlations among all body measurements were consistently positive and high, ranging from 0.64 to 1.00. Although other measures showed higher genetic correlations with weight, thorax perimeter combines a high value (0.70) with ease and repeatability, making it a useful field measurement to estimate body weight when scales are not available.
650 $aBovino
650 $aCerrado
650 $aGado
650 $aGenética
700 1 $aOJALA, M.
700 1 $aLOS REYES, A. de
700 1 $aSAINZ, R. D.
700 1 $aFERNANDES, A.
700 1 $aFAMULA, T. R.
773 $tJournal of Animal Breeding and Genetics, Berlin$gv. 119, p. 221-228, 2002.
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 47 | |
| 1. |  | MAGNABOSCO, C. U.; FAMULA, T. R.; LOBO, R. B.; REYES, A; OJALA, M. Estimativas de parametros geneticos e de ambiente de caracteristicas de crescimento em bovinos da raca Nelore. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 33., 1996, Fortaleza, CE. Anais... Fortaleza: Sociedade Brasileira de Zootecnia, 1996. p.142-144.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 2. | | MAGNABOSCO, C. U.; FAMULA, T. R.; LOBO, R. B.; REYES, A.; OJALA, M. Estimativas de parâmetros genéticos e de ambiente de características de crescimento em bovinos da raça Nelore. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 33., 1996, Fortaleza, CE. Anais... Fortaleza: Sociedade Brasileira de Zootecnia, 1996. p.142-144.| Biblioteca(s): Embrapa Cerrados. |
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| 5. | | BORGATTI, L. M.; LOBO, R. B.; CORDEIRO, C. T.; MAGNABOSCO, C deU.; REYES, A. de LOS. Estudo da estrutura familiar em um rebanho da raca Nelore. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 31., 1994, Maringa, PR. Anais..., Maringa: Sociedade Brasileira de Zootecnia, 1994, p. 148. Resumo| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 7. | | OLIVEIRA JUNIOR, B. C. de; REYES, A. de LOS; MAGNABOSCO, C. de U.; CORDEIRO, C. T.; LOBO, R. B. Analise da composicao familiar em um rebanho da raca Nelore. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 31., 1994, Maringa, PR, Anais. Maringa: Sociedade Brasileira de Zootecnia, 1994. p.145. p.145| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 8. | | SOBRERA NETO, J. A.; CORDEIRO, C. T.; MAGNABOSCO, C. de U.; LOS REYES, A.; LOBO, R. B. Analise genealogica da estrutura familiar em um rebanho raca Nelore criado no estado da Bahia. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 31., 1994, MARINGA, SP. Anais... Maringa: SBZ, 1994. p. 146.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 10. | | FARIA, C. U. de; MAGNABOSCO, C. de U.; ALBUQUERQUE, L. G. de; LOS REYES, A. de; LÔBO, R. B. Correlações genéticas entre escores visuais e características de crescimento utilizando modelos bayesianos linear-limiar. In: SIMPÓSIO NACIONAL CERRADO, 9.; SIMPÓSIO INTERNACIONAL SAVANAS TROPICAIS, 2., 2008, Brasília, DF. Desafios e estratégias para o equilíbrio entre sociedade, agronegócio e recursos naturais: anais... Planaltina, DF: Embrapa Cerrados, 2008. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Cerrados. |
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| 11. | | MAGNABOSCO, C. de U.; LOS REYES, A. de; SAINZ, R.; FARIA, C. U. de; SAUERESSIG, M.; MADUREIRA, A. P. Melhoramento genetico: um caso de sucesso. Revista Nelore, Sao Paulo, p. 15-26, 2002. Edicao de Anais do Simposio 2002: Nelore Natural, Ribeirao Preto, SP, ago. 2002.| Biblioteca(s): Embrapa Cerrados. |
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| 13. | | CARVALHO, J. C. M.; MAGNABOSCO, C. de U.; CORDEIRO, C. T.; LOS REYES, A.; LOBO, R. B. Estrutura familiar de um rebanho da raca Nelore: germoplasma puro de origem importada. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 31., 1994, Maringa, PR. Anais... Maringa: Sociedade Brasileira de Zootecnia, 1994. p.147. Resumo| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 16. | | MAGNABOSCO, C. D. U.; OJALA, M.; LOS REYES, A. de; SAINZ, R. D.; FERNANDES, A.; FAMULA, T. R. Estimates of environmental effects and genetic parameters for body measurements and weight in Brahaman cattle raised in Mexico. Journal of Animal Breeding and Genetics, Berlin, v. 119, p. 221-228, 2002.| Biblioteca(s): Embrapa Cerrados. |
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| 20. | | FARIA, C. U. de; MAGNABOSCO, C. de U.; LOS REYES, A. de; LÔBO, R. B.; BEZERRA, L. A. F. Inferência bayesiana e sua aplicação na avaliação genética de bovinos da raça Nelore: revisão bibliográfica. Ciência Animal Brasileira, Goiânia, v. 8, n. 1, p. 75-86, jan./mar. 2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - A |
| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 47 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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