| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Pecuária Sul. |
|
Data corrente: |
20/11/2012 |
|
Data da última atualização: |
24/06/2013 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SANTANA JÚNIOR, M. L.; ELER, J. P.; CARDOSO, F. F.; ALBUQUERQUE, L. G.; FERRAZ, J. B. S. |
|
Afiliação: |
UNIVERSIDADE FEDERAL DE MATO GROSSO; USP; FERNANDO FLORES CARDOSO, CPPSUL; UNIVERSIDADE ESTADUAL PAULISTA; USP. |
|
Título: |
Phenotypic plasticity of composite beef cattle performance using reaction norms model with unknown covariate. |
|
Ano de publicação: |
2013 |
|
Fonte/Imprenta: |
Animal, Cambridge, v. 7, n. 2, p. 202-210, Feb. 2013. |
|
ISSN: |
1751-732X |
|
Idioma: |
Inglês |
|
Notas: |
Firstview article 27 set. 2012. |
|
Conteúdo: |
The objective of the present study was to determine the presence of genotype by environment interaction (G × E) and to characterize the phenotypic plasticity of birth weight (BW), weaning weight (WW), postweaning weight gain (PWG) and yearling scrotal circumference (SC) in composite beef cattle using the reaction norms model with unknown covariate. The animals were born between 1995 and 2008 on 33 farms located throughout all Brazilian biomes between latitude −7° and −31°, longitude −40° and −63°. The contemporary group was chosen as the environmental descriptor, that is, the environmental covariate of the reaction norms. In general, higher estimates of direct heritability were observed in extreme favorable environments. The mean of direct heritability across the environmental gradient ranged from 0.05 to 0.51, 0.09 to 0.43, 0.01 to 0.43 and from 0.12 to 0.26 for BW, WW, PWG and SC, respectively. The variation in direct heritability observed indicates a different response to selection according to the environment in which the animals of the population are evaluated. The correlation between the level and slope of the reaction norm for BW and PWG was high, indicating that animals with higher average breeding values responded better to improvement in environmental conditions, a fact characterizing a scale of G × E. Low correlation between the intercept and slope was obtained for WW and SC, implying re-ranking of animals in different environments. Genetic variation exists in the sensitivity of animals to the environment, a fact that permits the selection of more plastic or robust genotypes in the population studied. Thus, the G × E is an important factor that should be considered in the genetic evaluation of the present population of composite beef cattle. MenosThe objective of the present study was to determine the presence of genotype by environment interaction (G × E) and to characterize the phenotypic plasticity of birth weight (BW), weaning weight (WW), postweaning weight gain (PWG) and yearling scrotal circumference (SC) in composite beef cattle using the reaction norms model with unknown covariate. The animals were born between 1995 and 2008 on 33 farms located throughout all Brazilian biomes between latitude −7° and −31°, longitude −40° and −63°. The contemporary group was chosen as the environmental descriptor, that is, the environmental covariate of the reaction norms. In general, higher estimates of direct heritability were observed in extreme favorable environments. The mean of direct heritability across the environmental gradient ranged from 0.05 to 0.51, 0.09 to 0.43, 0.01 to 0.43 and from 0.12 to 0.26 for BW, WW, PWG and SC, respectively. The variation in direct heritability observed indicates a different response to selection according to the environment in which the animals of the population are evaluated. The correlation between the level and slope of the reaction norm for BW and PWG was high, indicating that animals with higher average breeding values responded better to improvement in environmental conditions, a fact characterizing a scale of G × E. Low correlation between the intercept and slope was obtained for WW and SC, implying re-ranking of animals in different environments. Genetic... Mostrar Tudo |
|
Thesagro: |
Gado de corte. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/77851/1/Cardoso-Animal.pdf
|
|
Marc: |
LEADER 02462naa a2200205 a 4500
001 1940020
005 2013-06-24
008 2013 bl uuuu u00u1 u #d
022 $a1751-732X
100 1 $aSANTANA JÚNIOR, M. L.
245 $aPhenotypic plasticity of composite beef cattle performance using reaction norms model with unknown covariate.$h[electronic resource]
260 $c2013
500 $aFirstview article 27 set. 2012.
520 $aThe objective of the present study was to determine the presence of genotype by environment interaction (G × E) and to characterize the phenotypic plasticity of birth weight (BW), weaning weight (WW), postweaning weight gain (PWG) and yearling scrotal circumference (SC) in composite beef cattle using the reaction norms model with unknown covariate. The animals were born between 1995 and 2008 on 33 farms located throughout all Brazilian biomes between latitude −7° and −31°, longitude −40° and −63°. The contemporary group was chosen as the environmental descriptor, that is, the environmental covariate of the reaction norms. In general, higher estimates of direct heritability were observed in extreme favorable environments. The mean of direct heritability across the environmental gradient ranged from 0.05 to 0.51, 0.09 to 0.43, 0.01 to 0.43 and from 0.12 to 0.26 for BW, WW, PWG and SC, respectively. The variation in direct heritability observed indicates a different response to selection according to the environment in which the animals of the population are evaluated. The correlation between the level and slope of the reaction norm for BW and PWG was high, indicating that animals with higher average breeding values responded better to improvement in environmental conditions, a fact characterizing a scale of G × E. Low correlation between the intercept and slope was obtained for WW and SC, implying re-ranking of animals in different environments. Genetic variation exists in the sensitivity of animals to the environment, a fact that permits the selection of more plastic or robust genotypes in the population studied. Thus, the G × E is an important factor that should be considered in the genetic evaluation of the present population of composite beef cattle.
650 $aGado de corte
700 1 $aELER, J. P.
700 1 $aCARDOSO, F. F.
700 1 $aALBUQUERQUE, L. G.
700 1 $aFERRAZ, J. B. S.
773 $tAnimal, Cambridge$gv. 7, n. 2, p. 202-210, Feb. 2013.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Algodão. Para informações adicionais entre em contato com cnpa.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Algodão. |
|
Data corrente: |
04/01/2001 |
|
Data da última atualização: |
21/07/2008 |
|
Autoria: |
ARAUJO, J. M. de; OLIVEIRA, J. M. C. de; VALE, D. G.; SILVA, M. B. da; CARTAXO, W. V. |
|
Título: |
Avaliacao de unidades demonstrativa de algodoeiro herbaceo de sequeiro no nordeste - 1998. |
|
Ano de publicação: |
1999 |
|
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ALGODAO, 2., 1999. Ribeirao Preto. Anais... Campina Grande: EMBRAPA-CNPA, 1999. p.49-53. |
|
Idioma: |
Português |
|
Palavras-Chave: |
Brasil; Paraiba; Pernambuco. |
|
Thesagro: |
Algodão; Difusão de Tecnologia; Gossypium Hirsutum. |
|
Thesaurus NAL: |
cotton; technology transfer. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 00777naa a2200253 a 4500
001 1271599
005 2008-07-21
008 1999 bl uuuu u00u1 u #d
100 1 $aARAUJO, J. M. de
245 $aAvaliacao de unidades demonstrativa de algodoeiro herbaceo de sequeiro no nordeste - 1998.
260 $c1999
650 $acotton
650 $atechnology transfer
650 $aAlgodão
650 $aDifusão de Tecnologia
650 $aGossypium Hirsutum
653 $aBrasil
653 $aParaiba
653 $aPernambuco
700 1 $aOLIVEIRA, J. M. C. de
700 1 $aVALE, D. G.
700 1 $aSILVA, M. B. da
700 1 $aCARTAXO, W. V.
773 $tIn: CONGRESSO BRASILEIRO DE ALGODAO, 2., 1999. Ribeirao Preto. Anais... Campina Grande: EMBRAPA-CNPA, 1999. p.49-53.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Algodão (CNPA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
