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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Cerrados. |
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Data corrente: |
07/05/2021 |
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Data da última atualização: |
07/05/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BRUNES, L. C.; BALDI, F.; COSTA, M. F. O. e; LOBO, R. B.; LOPES, F. B.; MAGNABOSCO, C. U. |
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Afiliação: |
LUDMILLA C. BRUNES, UFG; FERNANDO BALDI, UNESP, Jaboticabal-SP; MARCOS FERNANDO OLIVEIRA E COSTA, CNPAF; RAYSILDO B. LOBO, ASSOCIAÇÃO NACIONAL DE CRIADORES, Ribeirão Preto-SP; F. B. LOPES, UNESP, Jaboticabal-SP; CLAUDIO DE ULHOA MAGNABOSCO, CPAC. |
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Título: |
Genetic-quantitative analysis for reproductive traits in Nellor cattle selected for sexual precocity. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Animal Production Science, v. 60, n. 7, p. 896-902, Mar. 2020. |
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ISSN: |
1836-5787 |
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DOI: |
https://doi.org/10.1071/AN19120 |
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Idioma: |
Inglês |
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Conteúdo: |
The selection of animals for sexual precocity and reproductive efficiency is a trend to reduce the production cycle, promote higher economic viability to the system, increase selection intensity and higher genetic gain, as well to promote the profitability of production systems. To include these traits as selection criterion in cattle breeding programs, estimating genetic parameters and studying the possibility of obtaining genetic gains is required. The hypothesis tested was that the indicators of sexual precocity traits present genetic variance and moderate heritability that allows these to be used as a criterion of selection to obtain improvement for sexual precocity, without negative implications for the reproductive efficiency in Nellore cattle. |
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Palavras-Chave: |
Age at first calving; Genetic parameters. |
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Thesagro: |
Gado Zebu; Reprodução Animal. |
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Thesaurus Nal: |
Puberty; Reproductive efficiency; Zebu. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01619naa a2200289 a 4500
001 2131719
005 2021-05-07
008 2020 bl uuuu u00u1 u #d
022 $a1836-5787
024 7 $ahttps://doi.org/10.1071/AN19120$2DOI
100 1 $aBRUNES, L. C.
245 $aGenetic-quantitative analysis for reproductive traits in Nellor cattle selected for sexual precocity.$h[electronic resource]
260 $c2020
520 $aThe selection of animals for sexual precocity and reproductive efficiency is a trend to reduce the production cycle, promote higher economic viability to the system, increase selection intensity and higher genetic gain, as well to promote the profitability of production systems. To include these traits as selection criterion in cattle breeding programs, estimating genetic parameters and studying the possibility of obtaining genetic gains is required. The hypothesis tested was that the indicators of sexual precocity traits present genetic variance and moderate heritability that allows these to be used as a criterion of selection to obtain improvement for sexual precocity, without negative implications for the reproductive efficiency in Nellore cattle.
650 $aPuberty
650 $aReproductive efficiency
650 $aZebu
650 $aGado Zebu
650 $aReprodução Animal
653 $aAge at first calving
653 $aGenetic parameters
700 1 $aBALDI, F.
700 1 $aCOSTA, M. F. O. e
700 1 $aLOBO, R. B.
700 1 $aLOPES, F. B.
700 1 $aMAGNABOSCO, C. U.
773 $tAnimal Production Science$gv. 60, n. 7, p. 896-902, Mar. 2020.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
04/03/2008 |
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Data da última atualização: |
05/03/2008 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
MELO, E. E. C. de; NASCIMENTO, C. W. A. do; ACCIOLY, A. M. A.; SANTOS, A. C. Q. |
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Afiliação: |
Évio Eduardo Chaves de Melo, UFRPE; Clístenes Williams Araújo do Nascimento, UFRPE; Adriana Maria Aguiar Accioly, CNPMF; Ana Cristiane Queiroz SAntos, UFRPE. |
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Título: |
Phytoextraction and fractionation of heavy metals in soil after multiple applications of natural chelants. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 65, n. 1, p. 61-68, 2008. |
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ISSN: |
0103-9016 |
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Idioma: |
Inglês |
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Notas: |
doi: 10.1590/S0103-90162008000100009 |
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Conteúdo: |
Chelate-assisted phytoextraction of heavy metals is a promising approach to clean up polluted soils. However, the most successful chelants tested so far are synthetic agents that barely degrade in soil, increasing the metal leaching risks. Natural organic acids have been proposed to enhance phytoextraction due to their higher biodegradability, but they can also be a drawback for efficient phytoextraction. This work was carried out to compare the effectiveness of multiple applications of citric and gallic acids on the availability in soil and accumulation of Cd, Pb, Cu, and Zn by velvet bean (Stizolobium aterrimum) plants. The organic acids were added as follows: 5 mmol kg-1 in the 28th cultivation day; two doses of 5 mmol kg-1 at the 28th and 31st day; and three applications at the same rate at the 28th, 31st, and 34th day of velvet bean cultivation. Soil samples were sequentially extracted and soil solution metal concentrations assessed. Neither citric acid nor gallic acid was efficient for metals phytoextraction. In general, low molecular weight organic acids (LMWOA) application increased the metal concentrations in the water soluble and exchangeable fractions. Zinc and Cu were retained mostly in the organic matter fraction. Zn was remobilized from the organic matter fraction through LMWOA application into the water soluble and exchangeable fractions. LMWOA mobilized Pb and Cu from iron oxides, but such an increase in solubility was not high enough to affect phytoextraction. MenosChelate-assisted phytoextraction of heavy metals is a promising approach to clean up polluted soils. However, the most successful chelants tested so far are synthetic agents that barely degrade in soil, increasing the metal leaching risks. Natural organic acids have been proposed to enhance phytoextraction due to their higher biodegradability, but they can also be a drawback for efficient phytoextraction. This work was carried out to compare the effectiveness of multiple applications of citric and gallic acids on the availability in soil and accumulation of Cd, Pb, Cu, and Zn by velvet bean (Stizolobium aterrimum) plants. The organic acids were added as follows: 5 mmol kg-1 in the 28th cultivation day; two doses of 5 mmol kg-1 at the 28th and 31st day; and three applications at the same rate at the 28th, 31st, and 34th day of velvet bean cultivation. Soil samples were sequentially extracted and soil solution metal concentrations assessed. Neither citric acid nor gallic acid was efficient for metals phytoextraction. In general, low molecular weight organic acids (LMWOA) application increased the metal concentrations in the water soluble and exchangeable fractions. Zinc and Cu were retained mostly in the organic matter fraction. Zn was remobilized from the organic matter fraction through LMWOA application into the water soluble and exchangeable fractions. LMWOA mobilized Pb and Cu from iron oxides, but such an increase in solubility was not high enough to affect phytoextractio... Mostrar Tudo |
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Thesagro: |
Metal; Solo. |
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Thesaurus NAL: |
pollution. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02149naa a2200217 a 4500
001 1654832
005 2008-03-05
008 2008 bl --- 0-- u #d
022 $a0103-9016
100 1 $aMELO, E. E. C. de
245 $aPhytoextraction and fractionation of heavy metals in soil after multiple applications of natural chelants.
260 $c2008
500 $adoi: 10.1590/S0103-90162008000100009
520 $aChelate-assisted phytoextraction of heavy metals is a promising approach to clean up polluted soils. However, the most successful chelants tested so far are synthetic agents that barely degrade in soil, increasing the metal leaching risks. Natural organic acids have been proposed to enhance phytoextraction due to their higher biodegradability, but they can also be a drawback for efficient phytoextraction. This work was carried out to compare the effectiveness of multiple applications of citric and gallic acids on the availability in soil and accumulation of Cd, Pb, Cu, and Zn by velvet bean (Stizolobium aterrimum) plants. The organic acids were added as follows: 5 mmol kg-1 in the 28th cultivation day; two doses of 5 mmol kg-1 at the 28th and 31st day; and three applications at the same rate at the 28th, 31st, and 34th day of velvet bean cultivation. Soil samples were sequentially extracted and soil solution metal concentrations assessed. Neither citric acid nor gallic acid was efficient for metals phytoextraction. In general, low molecular weight organic acids (LMWOA) application increased the metal concentrations in the water soluble and exchangeable fractions. Zinc and Cu were retained mostly in the organic matter fraction. Zn was remobilized from the organic matter fraction through LMWOA application into the water soluble and exchangeable fractions. LMWOA mobilized Pb and Cu from iron oxides, but such an increase in solubility was not high enough to affect phytoextraction.
650 $apollution
650 $aMetal
650 $aSolo
700 1 $aNASCIMENTO, C. W. A. do
700 1 $aACCIOLY, A. M. A.
700 1 $aSANTOS, A. C. Q.
773 $tScientia Agricola, Piracicaba$gv. 65, n. 1, p. 61-68, 2008.
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