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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos; Embrapa Solos / UEP-Recife. |
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Data corrente: |
22/11/2002 |
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Data da última atualização: |
16/09/2019 |
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Autoria: |
SILVA, D. J.; ALVAREZ, V. H.; RUIZ, H. A. |
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Título: |
Fluxo de massa e difusão de enxofre para raízes de milho em solos ácidos de minas gerais. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Revista Brasileira de Ciencia do Solo, Campinas, v.22, n.1,: 109-114, 1998. |
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Idioma: |
Português |
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Conteúdo: |
Com o objetivo de avliar a contribuicao do fluxo de massa e da difusao no transporte de enxofre a superficie das raizes de milho, desenvolveu-se um ensaioem casa de vegetacao, entre dezembro de 1991 e janeiro de 1992, uitlizando-se amostras superficias (0,20 cm) de tres solos acidos dos municipios mineiros de Vicosa, Paracatu e Lassance, Essas amostras apresentavam, respectivamente, 5,0,1,2 e 1,4 mg dm de S disponivel, obtidos pelo extrator Ca (H PO), 500 mg L de P em HOAc 2 mol L. o experimento correspondeu a um fatorial 3x5, sendo tres solos e cinco doses de enxofre (0,20,40,80 e 160 mg dm), estando os tratamentos dispostos em blocos casualizados, com quatro repeticoes. A unidade, controlada pelo uso de um tensiometro por vaso, foi mantida proxima a - 10 kPa durante todo o ensaio. Colhido o experimetro, determinaram-se as concentracoes de enxofre na planta e na solucao do solo. A contribuicao do fluxo de massa foi determinada, multiplicando-se a concentracao de de enxofre no extrato de pasta de saturacao pelo volume de agua transpirada pela planta. O enxofre transportado por difusao foi calculado, subtraindo-se do enxofre total acumulado na planta o valor correspondente ao enxofre transportado por fluxo de massa. Ofluxo de massa. |
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Palavras-Chave: |
Soil transport; Solos ácidos; Sulphur. |
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Thesagro: |
Enxofre; Solo; Zea Mays. |
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Thesaurus Nal: |
Soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01876naa a2200229 a 4500
001 1335568
005 2019-09-16
008 1998 bl uuuu u00u1 u #d
100 1 $aSILVA, D. J.
245 $aFluxo de massa e difusão de enxofre para raízes de milho em solos ácidos de minas gerais.
260 $c1998
520 $aCom o objetivo de avliar a contribuicao do fluxo de massa e da difusao no transporte de enxofre a superficie das raizes de milho, desenvolveu-se um ensaioem casa de vegetacao, entre dezembro de 1991 e janeiro de 1992, uitlizando-se amostras superficias (0,20 cm) de tres solos acidos dos municipios mineiros de Vicosa, Paracatu e Lassance, Essas amostras apresentavam, respectivamente, 5,0,1,2 e 1,4 mg dm de S disponivel, obtidos pelo extrator Ca (H PO), 500 mg L de P em HOAc 2 mol L. o experimento correspondeu a um fatorial 3x5, sendo tres solos e cinco doses de enxofre (0,20,40,80 e 160 mg dm), estando os tratamentos dispostos em blocos casualizados, com quatro repeticoes. A unidade, controlada pelo uso de um tensiometro por vaso, foi mantida proxima a - 10 kPa durante todo o ensaio. Colhido o experimetro, determinaram-se as concentracoes de enxofre na planta e na solucao do solo. A contribuicao do fluxo de massa foi determinada, multiplicando-se a concentracao de de enxofre no extrato de pasta de saturacao pelo volume de agua transpirada pela planta. O enxofre transportado por difusao foi calculado, subtraindo-se do enxofre total acumulado na planta o valor correspondente ao enxofre transportado por fluxo de massa. Ofluxo de massa.
650 $aSoil
650 $aEnxofre
650 $aSolo
650 $aZea Mays
653 $aSoil transport
653 $aSolos ácidos
653 $aSulphur
700 1 $aALVAREZ, V. H.
700 1 $aRUIZ, H. A.
773 $tRevista Brasileira de Ciencia do Solo, Campinas$gv.22, n.1,: 109-114, 1998.
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Registro original: |
Embrapa Solos (CNPS) |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
22/04/2019 |
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Data da última atualização: |
24/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
MOURTHÉ, M. H. F.; LOPES, F. C. F.; REIS, R. B.; GAMA, M. A. S. da; MORENZ, M. J. F.; SALOMÃO, B. M. |
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Afiliação: |
MÁRIO HENRIQUE FRANÇA MOURTHÉ, UFMG; FERNANDO CESAR FERRAZ LOPES, CNPGL; RONALDO BRAGA REIS, UFMG; MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; MIRTON JOSE FROTA MORENZ, CNPGL; BERNARDO MURTA SALOMÃO, BMS Consultoria. |
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Título: |
Ruminal metabolic parameters and milk fatty acid profile of cows grazing Marandu grass supplemented with roasted soybeans. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Semina: Ciências Agrárias, Londrina, v. 40, n. 2, p. 745-766, mar./abr. 2019. |
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DOI: |
10.5433/1679-0359.2019v40n2p745 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract The goal of this study was to evaluate the ruminal metabolic parameters and milk fatty acid composition of cows managed under continuous grazing on Marandu grass. Four rumen-cannulated Holstein x Gyr cows with an average milk yield of 21±2 kg day-1 and 79±16 days in milk were used in a 4 x 4 Latin Square design. Each cow received 6 kg day-1 of a concentrate formulated with 0 (control), 1.3, 2.6 or 3.9 kg of roasted soybeans (as-fed basis), which were the experimental treatments. The inclusion of roasted soybeans promoted a linear reduction in the acetate concentration, with no effect on the pH and ruminal ammonia N concentration. There was no effect of the treatments on the ruminal degradability of the dry matter and neutral detergent fiber of Marandu grass or on the kinetic parameters of the fluids in the rumen. There were linear increases in the contents of fat and total solids in the milk and a linear decrease in the milk lactose content, but there was no effect of the treatments on the yield of these components or on milk yield. There were linear increases in milk fat stearic, elaidic, oleic, linoleic and α-linolenic acidis contents, but there was no effect of the treatments on the milk fat contents of vaccenic and rumenic acids. Notably, supplementing Marandu grass with a concentrate containing up to 3.9 kg of roasted soybeans improved the nutritional quality of the milk fat due to increases in the milk fat contents of oleic and α-linolenic acids, which are considered beneficial to human health, and reductions in the levels of lauric, myristic and palmitic, which are considered hypercholesterolemic fatty acids. MenosAbstract The goal of this study was to evaluate the ruminal metabolic parameters and milk fatty acid composition of cows managed under continuous grazing on Marandu grass. Four rumen-cannulated Holstein x Gyr cows with an average milk yield of 21±2 kg day-1 and 79±16 days in milk were used in a 4 x 4 Latin Square design. Each cow received 6 kg day-1 of a concentrate formulated with 0 (control), 1.3, 2.6 or 3.9 kg of roasted soybeans (as-fed basis), which were the experimental treatments. The inclusion of roasted soybeans promoted a linear reduction in the acetate concentration, with no effect on the pH and ruminal ammonia N concentration. There was no effect of the treatments on the ruminal degradability of the dry matter and neutral detergent fiber of Marandu grass or on the kinetic parameters of the fluids in the rumen. There were linear increases in the contents of fat and total solids in the milk and a linear decrease in the milk lactose content, but there was no effect of the treatments on the yield of these components or on milk yield. There were linear increases in milk fat stearic, elaidic, oleic, linoleic and α-linolenic acidis contents, but there was no effect of the treatments on the milk fat contents of vaccenic and rumenic acids. Notably, supplementing Marandu grass with a concentrate containing up to 3.9 kg of roasted soybeans improved the nutritional quality of the milk fat due to increases in the milk fat contents of oleic and α-linolenic acids, whi... Mostrar Tudo |
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Palavras-Chave: |
Rumenic acid; Ruminal metabolite. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/201184/1/Ruminal-metabolic-parameters-and-milk-fatty-acid-profile-of-cows...-Fernando-2019.pdf
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Marc: |
LEADER 02393naa a2200217 a 4500
001 2108380
005 2023-01-24
008 2019 bl uuuu u00u1 u #d
024 7 $a10.5433/1679-0359.2019v40n2p745$2DOI
100 1 $aMOURTHÉ, M. H. F.
245 $aRuminal metabolic parameters and milk fatty acid profile of cows grazing Marandu grass supplemented with roasted soybeans.$h[electronic resource]
260 $c2019
520 $aAbstract The goal of this study was to evaluate the ruminal metabolic parameters and milk fatty acid composition of cows managed under continuous grazing on Marandu grass. Four rumen-cannulated Holstein x Gyr cows with an average milk yield of 21±2 kg day-1 and 79±16 days in milk were used in a 4 x 4 Latin Square design. Each cow received 6 kg day-1 of a concentrate formulated with 0 (control), 1.3, 2.6 or 3.9 kg of roasted soybeans (as-fed basis), which were the experimental treatments. The inclusion of roasted soybeans promoted a linear reduction in the acetate concentration, with no effect on the pH and ruminal ammonia N concentration. There was no effect of the treatments on the ruminal degradability of the dry matter and neutral detergent fiber of Marandu grass or on the kinetic parameters of the fluids in the rumen. There were linear increases in the contents of fat and total solids in the milk and a linear decrease in the milk lactose content, but there was no effect of the treatments on the yield of these components or on milk yield. There were linear increases in milk fat stearic, elaidic, oleic, linoleic and α-linolenic acidis contents, but there was no effect of the treatments on the milk fat contents of vaccenic and rumenic acids. Notably, supplementing Marandu grass with a concentrate containing up to 3.9 kg of roasted soybeans improved the nutritional quality of the milk fat due to increases in the milk fat contents of oleic and α-linolenic acids, which are considered beneficial to human health, and reductions in the levels of lauric, myristic and palmitic, which are considered hypercholesterolemic fatty acids.
653 $aRumenic acid
653 $aRuminal metabolite
700 1 $aLOPES, F. C. F.
700 1 $aREIS, R. B.
700 1 $aGAMA, M. A. S. da
700 1 $aMORENZ, M. J. F.
700 1 $aSALOMÃO, B. M.
773 $tSemina: Ciências Agrárias, Londrina$gv. 40, n. 2, p. 745-766, mar./abr. 2019.
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