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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados; Embrapa Semiárido. |
Data corrente: |
15/02/2006 |
Data da última atualização: |
15/02/2006 |
Autoria: |
SANTOS, P. de S. |
Título: |
Tecnologia de argilas aplicada às argilas brasileiras. |
Ano de publicação: |
1975 |
Fonte/Imprenta: |
São Paulo: Edgard Blücher, 1975. |
Volume: |
2 v. |
Descrição Física: |
il. |
Idioma: |
Português |
Conteúdo: |
v. 1 Fundamentos; v. 2 Aplicações. |
Palavras-Chave: |
Argila brasileira; Minério não-metalico; Tipos de argila. |
Thesagro: |
Argila. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00507nam a2200181 a 4500 001 1557991 005 2006-02-15 008 1975 bl uuuu 00u1 u #d 100 1 $aSANTOS, P. de S. 245 $aTecnologia de argilas aplicada às argilas brasileiras. 260 $aSão Paulo: Edgard Blücher$c1975 300 $a2 v. $cil. 490 $v2 v. 520 $av. 1 Fundamentos; v. 2 Aplicações. 650 $aArgila 653 $aArgila brasileira 653 $aMinério não-metalico 653 $aTipos de argila
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Embrapa Cerrados (CPAC) |
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Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
13/12/2018 |
Data da última atualização: |
17/01/2019 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
BRUNES, L. C.; MAGNABOSCO, C. de U.; BALDI, F. S.; COSTA, M. F. O. e; QUEIROZ, L. C. R. de; LOBO, R. B.; CROZARA, A. S.; LOPES, F. B. |
Afiliação: |
LUDMILLA COSTA BRUNES; CLAUDIO DE ULHOA MAGNABOSCO, CPAC; FERNANDO SEBASTIAN BALDI; MARCOS FERNANDO OLIVEIRA E COSTA, CNPAF; LUIS CANDIDO RIBEIRO DE QUEIROZ, UFG; RAYSILDO BARBOSA LÔBO; ADRIANO SANTANA CROZARA; FERNANDO BRITO LOPES. |
Título: |
Genetic association between growth and maternal ability traits in Nelore cattle. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 55.; CONGRESSO BRASILEIRO DE ZOOTECNIA, 28., 2018, Goiânia. Construindo saberes, formando pessoas e transformando a produção animal: anais eletrônicos. Goiânia: Sociedade Brasileira de Zootecnia, 2018. |
Idioma: |
Inglês |
Conteúdo: |
Although body weight traits have been widely used in animal breeding programs due to their importance to beef cattle systems, the use of maternal ability traits, which highly affect the profitability in livestock, is still incipient. As the knowledge of genetic parameters of economic important traits may aid genetic gains, this study was carried out to estimate genetic parameters for weight at 120 and 210 days of age (W120 and W210), pre-weaning average daily gain (PreDG), real fertility (RF), accumulated productivity (AP) and weaning rate (WR). The data set was obtained from Vera Cruz Ranch, a cattle ranch that participates in the Brazilian National Association of Breeders and Researchers (ANCP). Heritabilities and correlations were estimated using univariate and bivariate linear mixed model. The model included contemporary groups (year and season of birth, sex and management group), cow age at calving (in classes and as linear and quadratic covariate) as fixed effects, and genetic and residual components as random effects. Estimates of heritability for between growth and maternal ability traits ranged from 0.22 to 0.32, indicating that they could be improved by direct selection. Estimates of genetic correlation between W120-W210, W120-PreDG, W120-RF, W120-AP, W120-WR were 0.90, 0.54, 0.16, 0.45 and 0.24, respectively. Estimates of genetic correlation between W210-PreDG, W210-RF, W210-AP, W210-WR were 0.63, 0.27, 0.53 and 0.21, respectively. Estimates of genetic correlation between PreDG-RF, PreDG-AP, PreDG-WR were 0.23, 0.16 and 0.28, respectively. Positive genetic correlations were observed between RF, CAP and RD (0.28 to 0.78). Therefore, genetic selection having one of these characteristics as the criterion of selection will lead to an indirect response in the same direction in the others. These results indicate that the use of animals with high breeding values for weights and pre-weaning gain may lead to increase maternal ability traits due to correlated responses. Such responses tend to be bigger when using weight compared to the pre-weaning gain. MenosAlthough body weight traits have been widely used in animal breeding programs due to their importance to beef cattle systems, the use of maternal ability traits, which highly affect the profitability in livestock, is still incipient. As the knowledge of genetic parameters of economic important traits may aid genetic gains, this study was carried out to estimate genetic parameters for weight at 120 and 210 days of age (W120 and W210), pre-weaning average daily gain (PreDG), real fertility (RF), accumulated productivity (AP) and weaning rate (WR). The data set was obtained from Vera Cruz Ranch, a cattle ranch that participates in the Brazilian National Association of Breeders and Researchers (ANCP). Heritabilities and correlations were estimated using univariate and bivariate linear mixed model. The model included contemporary groups (year and season of birth, sex and management group), cow age at calving (in classes and as linear and quadratic covariate) as fixed effects, and genetic and residual components as random effects. Estimates of heritability for between growth and maternal ability traits ranged from 0.22 to 0.32, indicating that they could be improved by direct selection. Estimates of genetic correlation between W120-W210, W120-PreDG, W120-RF, W120-AP, W120-WR were 0.90, 0.54, 0.16, 0.45 and 0.24, respectively. Estimates of genetic correlation between W210-PreDG, W210-RF, W210-AP, W210-WR were 0.63, 0.27, 0.53 and 0.21, respectively. Estimates of genetic correlation... Mostrar Tudo |
Palavras-Chave: |
Traços de maternidade. |
Thesagro: |
Fator de Crescimento; Fertilidade Animal; Gado Nelore; Genética Animal; Melhoramento Genético Animal; Taxa de Crescimento. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/188390/1/Crescimento-pre-e-habilidade-materna-ingles-24-04.pdf
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Marc: |
LEADER 03137nam a2200277 a 4500 001 2101498 005 2019-01-17 008 2018 bl uuuu u00u1 u #d 100 1 $aBRUNES, L. C. 245 $aGenetic association between growth and maternal ability traits in Nelore cattle.$h[electronic resource] 260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 55.; CONGRESSO BRASILEIRO DE ZOOTECNIA, 28., 2018, Goiânia. Construindo saberes, formando pessoas e transformando a produção animal: anais eletrônicos. Goiânia: Sociedade Brasileira de Zootecnia$c2018 520 $aAlthough body weight traits have been widely used in animal breeding programs due to their importance to beef cattle systems, the use of maternal ability traits, which highly affect the profitability in livestock, is still incipient. As the knowledge of genetic parameters of economic important traits may aid genetic gains, this study was carried out to estimate genetic parameters for weight at 120 and 210 days of age (W120 and W210), pre-weaning average daily gain (PreDG), real fertility (RF), accumulated productivity (AP) and weaning rate (WR). The data set was obtained from Vera Cruz Ranch, a cattle ranch that participates in the Brazilian National Association of Breeders and Researchers (ANCP). Heritabilities and correlations were estimated using univariate and bivariate linear mixed model. The model included contemporary groups (year and season of birth, sex and management group), cow age at calving (in classes and as linear and quadratic covariate) as fixed effects, and genetic and residual components as random effects. Estimates of heritability for between growth and maternal ability traits ranged from 0.22 to 0.32, indicating that they could be improved by direct selection. Estimates of genetic correlation between W120-W210, W120-PreDG, W120-RF, W120-AP, W120-WR were 0.90, 0.54, 0.16, 0.45 and 0.24, respectively. Estimates of genetic correlation between W210-PreDG, W210-RF, W210-AP, W210-WR were 0.63, 0.27, 0.53 and 0.21, respectively. Estimates of genetic correlation between PreDG-RF, PreDG-AP, PreDG-WR were 0.23, 0.16 and 0.28, respectively. Positive genetic correlations were observed between RF, CAP and RD (0.28 to 0.78). Therefore, genetic selection having one of these characteristics as the criterion of selection will lead to an indirect response in the same direction in the others. These results indicate that the use of animals with high breeding values for weights and pre-weaning gain may lead to increase maternal ability traits due to correlated responses. Such responses tend to be bigger when using weight compared to the pre-weaning gain. 650 $aFator de Crescimento 650 $aFertilidade Animal 650 $aGado Nelore 650 $aGenética Animal 650 $aMelhoramento Genético Animal 650 $aTaxa de Crescimento 653 $aTraços de maternidade 700 1 $aMAGNABOSCO, C. de U. 700 1 $aBALDI, F. S. 700 1 $aCOSTA, M. F. O. e 700 1 $aQUEIROZ, L. C. R. de 700 1 $aLOBO, R. B. 700 1 $aCROZARA, A. S. 700 1 $aLOPES, F. B.
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