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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
27/01/2016 |
Data da última atualização: |
27/01/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
YOKOO, M. J. I.; LÔBO, R. B.; MAGNABOSCO, C. de U.; ROSA, G. J. M.; FORNI, S.; SAINZ, R. D.; ALBUQUERQUE, L. G. |
Afiliação: |
MARCOS JUN ITI YOKOO, CPPSUL; R. B. Lôbo, Associação Nacional de Criadores e Pesquisadores; CLAUDIO DE ULHOA MAGNABOSCO, CPAC; G. J. M. Rosa, University of Wisconsin; S. Forni, Dow AgroSciences; R. D. Sainz, University of California; L. G. Albuquerque, UNESP. |
Título: |
Genetic correlation of traits measured by ultrasound at yearling and 18 months of age in Nellore beef cattle. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Livestock Science, v. 180, p. 34-40, Oct. 2015. |
DOI: |
10.1016/j.livsci.2015.07.003 |
Idioma: |
Inglês |
Conteúdo: |
The objective of this study was to estimate genetic parameters for carcass traits measured by ultrasound at yearling (Y) and 18 months of age (post-yearling, PY) in order to identify the most appropriate age for the measurement of these traits used for the selection of Nellore beef cattle. In addition, genetic correlations were estimated between these carcass traits and between carcass and other economically important traits such as scrotal circumference, weight, hip height at 18 months of age, age at first calving, and first calving interval (FCI). The carcass traits were longissimus muscle area (LMA), backfat thickness (BF), and rump fat thickness (RF) recorded at two different ages (Y and PY). Gibbs sampling was applied to estimate the genetic parameters using multiple trait animal model. The estimates of posterior heritabilities and standard deviations (SD) for the carcass traits were 0.46, SD=0.06 (LMA_Y), 0.42, SD=0.07 (BF_Y), 0.60, SD=0.09 (RF_Y), 0.33, SD=0.06 (LMA_PY), 0.59, SD=0.08 (BF_PY), and 0.55, SD=0.09 (RF_PY). The genetic parameters obtained in this study suggest the existence of genetic variability in all carcass traits at both ages. Hip height was negatively correlated with BF_PY and RF_PY, indicating that selection of taller animals may lead to animals that will deposit less subcutaneous fat. Selection for growth and carcass traits will not affect FCI, except for an increase in BF_PY which will increase FCI in the long term, possibly due to a correlated response, once the genetic correlation is moderate (0.40, SD= 0.17), and the posterior heritability for FCI was relatively low (0.11, SD= 0.03). The traits LMA, BF and RF measured at Y and at PY are practically the same traits since the genetic correlation are 0.83 (SD= 0.06), 0.94 (SD= 0.02) and 0.72 (SD= 0.07), respectively. In conclusion, ultrasound carcass traits should respond rapidly to selection and can be recorded only in one age, at Y or at PY. Furthermore, there is no need to include the two subcutaneous fat thickness measures (BF and RF) in selection criteria since they are highly genetic correlated. Genetic progress for these carcass traits can be achieved without affecting the breeding value of animals for other economic traits, since the most of genetic correlation estimates are favorable and of low magnitude. MenosThe objective of this study was to estimate genetic parameters for carcass traits measured by ultrasound at yearling (Y) and 18 months of age (post-yearling, PY) in order to identify the most appropriate age for the measurement of these traits used for the selection of Nellore beef cattle. In addition, genetic correlations were estimated between these carcass traits and between carcass and other economically important traits such as scrotal circumference, weight, hip height at 18 months of age, age at first calving, and first calving interval (FCI). The carcass traits were longissimus muscle area (LMA), backfat thickness (BF), and rump fat thickness (RF) recorded at two different ages (Y and PY). Gibbs sampling was applied to estimate the genetic parameters using multiple trait animal model. The estimates of posterior heritabilities and standard deviations (SD) for the carcass traits were 0.46, SD=0.06 (LMA_Y), 0.42, SD=0.07 (BF_Y), 0.60, SD=0.09 (RF_Y), 0.33, SD=0.06 (LMA_PY), 0.59, SD=0.08 (BF_PY), and 0.55, SD=0.09 (RF_PY). The genetic parameters obtained in this study suggest the existence of genetic variability in all carcass traits at both ages. Hip height was negatively correlated with BF_PY and RF_PY, indicating that selection of taller animals may lead to animals that will deposit less subcutaneous fat. Selection for growth and carcass traits will not affect FCI, except for an increase in BF_PY which will increase FCI in the long term, possibly due to a correlated r... Mostrar Tudo |
Palavras-Chave: |
Ultra-Som. |
Thesagro: |
Carcaça; Gado de corte. |
Categoria do assunto: |
-- |
Marc: |
LEADER 03033naa a2200241 a 4500 001 2035334 005 2016-01-27 008 2015 bl --- 0-- u #d 024 7 $a10.1016/j.livsci.2015.07.003$2DOI 100 1 $aYOKOO, M. J. I. 245 $aGenetic correlation of traits measured by ultrasound at yearling and 18 months of age in Nellore beef cattle. 260 $c2015 520 $aThe objective of this study was to estimate genetic parameters for carcass traits measured by ultrasound at yearling (Y) and 18 months of age (post-yearling, PY) in order to identify the most appropriate age for the measurement of these traits used for the selection of Nellore beef cattle. In addition, genetic correlations were estimated between these carcass traits and between carcass and other economically important traits such as scrotal circumference, weight, hip height at 18 months of age, age at first calving, and first calving interval (FCI). The carcass traits were longissimus muscle area (LMA), backfat thickness (BF), and rump fat thickness (RF) recorded at two different ages (Y and PY). Gibbs sampling was applied to estimate the genetic parameters using multiple trait animal model. The estimates of posterior heritabilities and standard deviations (SD) for the carcass traits were 0.46, SD=0.06 (LMA_Y), 0.42, SD=0.07 (BF_Y), 0.60, SD=0.09 (RF_Y), 0.33, SD=0.06 (LMA_PY), 0.59, SD=0.08 (BF_PY), and 0.55, SD=0.09 (RF_PY). The genetic parameters obtained in this study suggest the existence of genetic variability in all carcass traits at both ages. Hip height was negatively correlated with BF_PY and RF_PY, indicating that selection of taller animals may lead to animals that will deposit less subcutaneous fat. Selection for growth and carcass traits will not affect FCI, except for an increase in BF_PY which will increase FCI in the long term, possibly due to a correlated response, once the genetic correlation is moderate (0.40, SD= 0.17), and the posterior heritability for FCI was relatively low (0.11, SD= 0.03). The traits LMA, BF and RF measured at Y and at PY are practically the same traits since the genetic correlation are 0.83 (SD= 0.06), 0.94 (SD= 0.02) and 0.72 (SD= 0.07), respectively. In conclusion, ultrasound carcass traits should respond rapidly to selection and can be recorded only in one age, at Y or at PY. Furthermore, there is no need to include the two subcutaneous fat thickness measures (BF and RF) in selection criteria since they are highly genetic correlated. Genetic progress for these carcass traits can be achieved without affecting the breeding value of animals for other economic traits, since the most of genetic correlation estimates are favorable and of low magnitude. 650 $aCarcaça 650 $aGado de corte 653 $aUltra-Som 700 1 $aLÔBO, R. B. 700 1 $aMAGNABOSCO, C. de U. 700 1 $aROSA, G. J. M. 700 1 $aFORNI, S. 700 1 $aSAINZ, R. D. 700 1 $aALBUQUERQUE, L. G. 773 $tLivestock Science$gv. 180, p. 34-40, Oct. 2015.
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Registros recuperados : 76 | |
1. | | SAINZ, R. D.; MAGNABOSCO, C. de U. Analise de sistemas agropastoris. In: WORKSHOP INTERNACIONAL PROGRAMA DE INTEGRACAO AGRICULTURA E PECUARIA PARA O DESENVOLVIMENTO SUSTENTAVEL DAS SAVANAS TROPICAIS SULAMERICANAS, 2001, Santo Antonio de Goias. Anais... Santo Antonio de Goias: Embrapa Arroz e Feijao, 2001. p. 10-28Biblioteca(s): Embrapa Cerrados. |
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3. | | MAGNABOSCO, C. de U.; MANICARDI, F.; BARBOSA, V.; ARAUJO, F. C. R.; SAINZ, R. D. Analise de caracteristicas de carcaca e crescimento em bovinos da raca Brahman criados na regiao do Mato Grosso- resultados preliminares. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 40., 2003, Santa Maria, RS. Otimizando a producao animal: anais. Santa Maria: SBZ: UFSM, 2003. 1 CD-ROM.Biblioteca(s): Embrapa Cerrados. |
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6. | | THOMPSON, V. A.; BARIONI, L. G.; RUMSEY, T. R.; FADEL, J. G.; SAINZ, R. D. The development of a dynamic, mechanistic, thermal balance model for Bos indicus and Bos taurus. Journal of Agricultural Science, Cambridge, v. 152, n. 3, p. 464-482, June 2014.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Agricultura Digital. |
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7. | | SAINZ, R. D.; BARIONI, L. G.; PAULINO, P. V.; VALADARES FILHO, S. C.; OLTJEN, J. W. Growth patterns of Nellore vc British beef cattle breeds assessed using a dynamic, mechanistic model of cattle growth and composition. In: KEBREAB, E.; DIJKSTRA, J.; BANNINK, A.; GERRITS, W. J. J.; FRANCE, J. (Ed.). Nutrient digestion and utilization in farm animals: modelling approaches. Oxfordshire: CABI, 2006. p. 160-170.Biblioteca(s): Embrapa Cerrados. |
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10. | | MAGNABOSCO, C. de U.; LOPES, F. B.; MIYAGI, E. S.; LÔBO, R. B.; SAINZ, R. D. Multivariate approach of inter-relationships among growth, consumption and carcass traits in nellore cattle. Revista Ciência Agronômica, v. 45, n. 1, p. 168-176, 2014. p. 168-176Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Cerrados. |
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11. | | OLTJEN, J. W.; SAINZ, R. D.; BARIONI, L. G.; MEDEIROS, S. R. de. Rate of protein growth and energy for mainternance parameter changes in the Davis Growth Model. In: EAAP INTERNATIONAL SYMPOSIUM ON ENERGY AND PROTEIN METABOLISM AND NUTRITION, 5., 2016, Krakow, Poland. Proceedings... Wageningen, Reino dos Países Baixos: Wageningen Academic Pulbishers, 2016. p. 69-70 (EAAP publication, 137). Edited by: Jacek Skomial, Hélène LapierreTipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Gado de Corte. |
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12. | | PADUA, J. T.; SAINZ, R. D.; MIYAGI, E. S.; MAGNABOSCO, C. de O.; PRADO, C. S.; PACHECO, R. Avaliacao do desempenho e de caracteristicas de carcaca de bovinos de corte confinados, inteiros e castrados com e sem synovex-s. In: CONGRESSO BRASILEIRO DE CIENCIA E TECNOLOGIA DE CARNES, 1., 2001, Sao Pedro,SP. Carne: qualidade e seguranca para os consumidores do novo milenio: anais: palestras e trabalhos cientificos. Sao Pedro: CTG, 2001. p. 90-91.Biblioteca(s): Embrapa Cerrados. |
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13. | | LOPES, F. B.; MAGNABOSCO, C. de U.; MAMEDE, M. M. S.; NAKAGAWA, A. F.; SAINZ, R. D. Abordagem multivariada das inter-relações entre características de crescimento e consumo alimentar de bovinos da raça Nelore mocho In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 49., 2012, Brasília. A produção animal no mundo em transformação: anais. Brasília, DF: SBZ, 2012. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Cerrados. |
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14. | | LOPES, F. B.; MAGNABOSCO, C. de U.; MAMEDE, M. M. S.; NAKAGAWA, A. F.; SAINZ, R. D. Ajustes de curvas de crescimento de um rebanho de bovinos da raça Nelore mocho. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 49., 2012, Brasília. A produção animal no mundo em transformação: anais. Brasília, DF: SBZ, 2012. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Cerrados. |
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16. | | MAGNABOSCO, C. de U.; FARIA, C. U; LOS REYES, A. de; LOBO, R. B.; SAINZ, R. D. Interferencia bayesiana para peso ao desmame em bovinos da raca nelore. In: REUNION DE LA ASOCIACION LATINOAMERICANA DE PRODUCCION ANIMAL, 17.; REUNION DE LA ASOCIACION CUBANA DE PRODUCCION ANIMAL, 9.; ENCUENTRO REGIONAL SOBRE NUTRICION Y PRODUCCION DE ANIMALES MONOGASTRICOS, 6.; ENCUENTRO REGIONAL SOBRE TRANSFERENCIA DE TECNOLOGIA EN LA PRODUCCION ANIMAL TROPICAL, 1., 2001, La Habana, Cuba. Programa - resumenes. La Habana: ACPA, 2001.Biblioteca(s): Embrapa Cerrados. |
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19. | | 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. | | GOMES, R. da C.; SAINZ, R. D.; SILVA, S. L.; CESAR, M. C.; BONIN, M. N.; LEME, P. R. Feedlot performance, feed efficiency reranking, carcass traits, body composition, energy requirements, meat quality and calpain system activity in Nellore steers with low and high residual feed intake. Livestock Science, v.150, p.265-273, Dec. 2012. Issue 1-3.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Gado de Corte. |
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Registros recuperados : 76 | |
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