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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
26/08/2021 |
Data da última atualização: |
26/08/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FERREIRA, Q. de C. G.; BACELLAR, L. de A. P.; VIANA, J. H. M. |
Afiliação: |
QUENIA DE CASSIA GOULART FERREIRA, Universidade Federal de Ouro Preto; LUIS DE ALMEIDA PRADO BACELLAR, Universidade Federal de Ouro Preto; JOAO HERBERT MOREIRA VIANA, CNPMS. |
Título: |
Evaluation of soil moisture by electrical resistivity in Oxisols of the central Brazilian savanna. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Geoderma Regional, v. 26, e00408, 2021. |
DOI: |
https://doi.org/10.1016/j.geodrs.2021.e00408 |
Idioma: |
Inglês |
Conteúdo: |
The determination of the spatial distribution of soil moisture in the field is relevant for many purposes in agriculture and engineering, but it is still a challenge, since standard determination methods have limitations and problems of representativeness. Electrical resistivity may be used with this finality, but this method is still poorly studied for highly weathered tropical soils, which present structural and textural peculiarities. This work aims to present the calibration of the moisture/electrical resistivity relationships for a typical tropical soil, and to evaluate its robustness as a soil moisture prediction method. A highly weathered clay soil (Oxisol), representative of the Brazilian savanna (?Cerrado?), was sampled and the resistivity tests of the A, Bw and C horizons were conducted in a four-electrode cell array. The A and Bw horizons of clay Oxisols usually present resistivity values greater than temperate soils counterparts, which can be attributed to the lower content of highly active clays and higher macroporosity. The soil electrical resistivity/volumetric moisture relationship present a nonlinear and inverse trend and the generalized form of Archie?s law has the potential to be applied to determine the water content of these soils. The electrical resistivity/volumetric soil moisture semi-log plot showed a two-step pattern, with a remarkable change in the behavior around the moisture associated to the wilting point. The field validation shows that the use of the electrical resistivity is possible for the measurement of soil moisture and for the subsurface mapping of its horizons. MenosThe determination of the spatial distribution of soil moisture in the field is relevant for many purposes in agriculture and engineering, but it is still a challenge, since standard determination methods have limitations and problems of representativeness. Electrical resistivity may be used with this finality, but this method is still poorly studied for highly weathered tropical soils, which present structural and textural peculiarities. This work aims to present the calibration of the moisture/electrical resistivity relationships for a typical tropical soil, and to evaluate its robustness as a soil moisture prediction method. A highly weathered clay soil (Oxisol), representative of the Brazilian savanna (?Cerrado?), was sampled and the resistivity tests of the A, Bw and C horizons were conducted in a four-electrode cell array. The A and Bw horizons of clay Oxisols usually present resistivity values greater than temperate soils counterparts, which can be attributed to the lower content of highly active clays and higher macroporosity. The soil electrical resistivity/volumetric moisture relationship present a nonlinear and inverse trend and the generalized form of Archie?s law has the potential to be applied to determine the water content of these soils. The electrical resistivity/volumetric soil moisture semi-log plot showed a two-step pattern, with a remarkable change in the behavior around the moisture associated to the wilting point. The field validation shows that the use... Mostrar Tudo |
Palavras-Chave: |
Electrical resistivity; Resistividade elétrica; Soil moisture. |
Thesagro: |
Latossolo; Umidade do Solo. |
Thesaurus Nal: |
Oxisols; Savannas. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02370naa a2200241 a 4500 001 2133865 005 2021-08-26 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.geodrs.2021.e00408$2DOI 100 1 $aFERREIRA, Q. de C. G. 245 $aEvaluation of soil moisture by electrical resistivity in Oxisols of the central Brazilian savanna.$h[electronic resource] 260 $c2021 520 $aThe determination of the spatial distribution of soil moisture in the field is relevant for many purposes in agriculture and engineering, but it is still a challenge, since standard determination methods have limitations and problems of representativeness. Electrical resistivity may be used with this finality, but this method is still poorly studied for highly weathered tropical soils, which present structural and textural peculiarities. This work aims to present the calibration of the moisture/electrical resistivity relationships for a typical tropical soil, and to evaluate its robustness as a soil moisture prediction method. A highly weathered clay soil (Oxisol), representative of the Brazilian savanna (?Cerrado?), was sampled and the resistivity tests of the A, Bw and C horizons were conducted in a four-electrode cell array. The A and Bw horizons of clay Oxisols usually present resistivity values greater than temperate soils counterparts, which can be attributed to the lower content of highly active clays and higher macroporosity. The soil electrical resistivity/volumetric moisture relationship present a nonlinear and inverse trend and the generalized form of Archie?s law has the potential to be applied to determine the water content of these soils. The electrical resistivity/volumetric soil moisture semi-log plot showed a two-step pattern, with a remarkable change in the behavior around the moisture associated to the wilting point. The field validation shows that the use of the electrical resistivity is possible for the measurement of soil moisture and for the subsurface mapping of its horizons. 650 $aOxisols 650 $aSavannas 650 $aLatossolo 650 $aUmidade do Solo 653 $aElectrical resistivity 653 $aResistividade elétrica 653 $aSoil moisture 700 1 $aBACELLAR, L. de A. P. 700 1 $aVIANA, J. H. M. 773 $tGeoderma Regional$gv. 26, e00408, 2021.
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
10/12/2020 |
Data da última atualização: |
10/12/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
LAGE, R. R. P.; VEGA, W. H. O.; COSTA, H. H. A.; SILVA, A. C.; SOUSA, L. C. O.; LIMA, L. D. de; LANDIM, A. V. |
Afiliação: |
State University of Vale do Acaraú (UVA) - Sobral, CE, Brazil; State University of Vale do Acaraú (UVA) - Sobral, CE, Brazil; State University of Vale do Acaraú (UVA) - Sobral, CE, Brazil; ALINE COSTA SILVA, CNPC; State University of Vale do Acaraú (UVA) - Sobral, CE, Brazil; LISIANE DORNELES DE LIMA, CNPC; State University of Vale do Acaraú (UVA) - Sobral, CE, Brazil. |
Título: |
Effect of breed on meat quality and global acceptance of native lambs and their crosses. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
South African Journal of Animal Science, v. 50, n. 1, p. 150-160, 2020. |
DOI: |
http://dx.doi.org/10.4314/sajas.v50i1.16 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: International projections point to the growth in global production of sheep meat, mainly from developing countries. However, the exigencies of consumers on characterization of production systems, nutritional information, and sensorial analysis to target the preferences must be answered. The aim of this study was to characterize the meat quality and the global acceptance of Brazilian native ovine breeds and their crosses, and discuss these aspects on the current basis of human health and wellbeing. Three native breeds (Morada Nova, Rabo Largo, and Santa Inês) that were managed in semi-intensive systems and raised in semi-arid Brazilian regions were used. Chemical composition and fatty acid analysis, sensory evaluation and health indices were accessed. The combined effects of breed, sex and breed by sex interaction produced differentiation in meat fatty acid (FA) profiles. The cholesterol contents ranged between 51 and 59.1 mg/100 g. The Morada Nova lambs showed the lowest lipid content (1.93%). The Morada Nova x Rabo Largo crossbreed breed has the potential to increase the content of conjugated linoleic acid. The high content of ?-linolenic acid, which is considered hypocholesterolemic, was responsible for better health indices. The moderate acceptability obtained in sensory traits is compatible with the requirements of the consumer market. The combination of nutritional and sensory traits associated with human health and wellbeing that is presented by these native ovine breeds qualifies them as a good choice of red meat to be included in a larger proportion in human food. MenosAbstract: International projections point to the growth in global production of sheep meat, mainly from developing countries. However, the exigencies of consumers on characterization of production systems, nutritional information, and sensorial analysis to target the preferences must be answered. The aim of this study was to characterize the meat quality and the global acceptance of Brazilian native ovine breeds and their crosses, and discuss these aspects on the current basis of human health and wellbeing. Three native breeds (Morada Nova, Rabo Largo, and Santa Inês) that were managed in semi-intensive systems and raised in semi-arid Brazilian regions were used. Chemical composition and fatty acid analysis, sensory evaluation and health indices were accessed. The combined effects of breed, sex and breed by sex interaction produced differentiation in meat fatty acid (FA) profiles. The cholesterol contents ranged between 51 and 59.1 mg/100 g. The Morada Nova lambs showed the lowest lipid content (1.93%). The Morada Nova x Rabo Largo crossbreed breed has the potential to increase the content of conjugated linoleic acid. The high content of ?-linolenic acid, which is considered hypocholesterolemic, was responsible for better health indices. The moderate acceptability obtained in sensory traits is compatible with the requirements of the consumer market. The combination of nutritional and sensory traits associated with human health and wellbeing that is presented by these native ... Mostrar Tudo |
Palavras-Chave: |
Brasil; Carne ovina; Healthier meat; Semi-arid region; Semiárido. |
Thesagro: |
Ácido Graxo; Composição Química; Nutrição Humana; Ovino; Qualidade. |
Thesaurus NAL: |
Brazil; Chemical composition; Fatty acids; Food acceptability; Human food chain; Lamb meat; Meat quality; Semiarid zones; Sheep meat. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02823naa a2200433 a 4500 001 2127951 005 2020-12-10 008 2020 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.4314/sajas.v50i1.16$2DOI 100 1 $aLAGE, R. R. P. 245 $aEffect of breed on meat quality and global acceptance of native lambs and their crosses.$h[electronic resource] 260 $c2020 520 $aAbstract: International projections point to the growth in global production of sheep meat, mainly from developing countries. However, the exigencies of consumers on characterization of production systems, nutritional information, and sensorial analysis to target the preferences must be answered. The aim of this study was to characterize the meat quality and the global acceptance of Brazilian native ovine breeds and their crosses, and discuss these aspects on the current basis of human health and wellbeing. Three native breeds (Morada Nova, Rabo Largo, and Santa Inês) that were managed in semi-intensive systems and raised in semi-arid Brazilian regions were used. Chemical composition and fatty acid analysis, sensory evaluation and health indices were accessed. The combined effects of breed, sex and breed by sex interaction produced differentiation in meat fatty acid (FA) profiles. The cholesterol contents ranged between 51 and 59.1 mg/100 g. The Morada Nova lambs showed the lowest lipid content (1.93%). The Morada Nova x Rabo Largo crossbreed breed has the potential to increase the content of conjugated linoleic acid. The high content of ?-linolenic acid, which is considered hypocholesterolemic, was responsible for better health indices. The moderate acceptability obtained in sensory traits is compatible with the requirements of the consumer market. The combination of nutritional and sensory traits associated with human health and wellbeing that is presented by these native ovine breeds qualifies them as a good choice of red meat to be included in a larger proportion in human food. 650 $aBrazil 650 $aChemical composition 650 $aFatty acids 650 $aFood acceptability 650 $aHuman food chain 650 $aLamb meat 650 $aMeat quality 650 $aSemiarid zones 650 $aSheep meat 650 $aÁcido Graxo 650 $aComposição Química 650 $aNutrição Humana 650 $aOvino 650 $aQualidade 653 $aBrasil 653 $aCarne ovina 653 $aHealthier meat 653 $aSemi-arid region 653 $aSemiárido 700 1 $aVEGA, W. H. O. 700 1 $aCOSTA, H. H. A. 700 1 $aSILVA, A. C. 700 1 $aSOUSA, L. C. O. 700 1 $aLIMA, L. D. de 700 1 $aLANDIM, A. V. 773 $tSouth African Journal of Animal Science$gv. 50, n. 1, p. 150-160, 2020.
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