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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
22/12/1999 |
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Data da última atualização: |
22/12/1999 |
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Autoria: |
MARTIN-NETO, L.; BONAGAMBA, T. J.; COLNAGO, L. A.; PANEPUCCI, H. C.; VIEIRA, E.; MIYAZAWA, M. |
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Afiliação: |
EMBRAPA-CNPDIA; USP-IFSC; USP-IQSC; IAPAR. |
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Título: |
Avaliacao dos efeitos de diferentes manejos do solo sobre aspectos qualitativos das substancias humicas por RMN do estado solido. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
In: ENCONTRO DE USUARIOS DE RESSONANCIA MAGNETICA NUCLEAR, 5., maio 1995, Angra dos Reis, RJ. Resumos... Rio de Janeiro: AUREMN, 1995. |
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Páginas: |
p.62. |
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Idioma: |
Português |
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Conteúdo: |
A necessidade do aumento crescente da producao de alimentos com concomitante preservacao ambiental constituem-se em formidaveis desafios a pesquisa agricola. Uma das consequencias e a necessidade de identificacao precisa, inclusive a nivel molecular, de alteracoes devido as diferentes praticas agricolas sobre o meio ambiente. Estamos empregando tecnicas espectroscopicas como o UV-visivel, infravermelho, ressonancia paramagnetica eletronica e fluorescencia na caracterizacao da materia organica dos solos. Neste trabalho introduzimos a utilizacao da tecnica de espectroscopia de alta resolucao em solidos por RMN na caracterizacao de um dos principais constituintes da materia organica, o acido humico. Trata-se de uma molecula complexa, contendo grupos aromaticos ealifaticos, e desempenha importante papel na fertilidade e tambem na manutencao da estrutura do solo. Amostras de solo (latossolo roxo) submetido a diferentes manejos (plantio direto, manejo convencional e area de mata virgem) foram coletados em 3 profundidades, 0-5, 5-10 e 10-20cm, na estacao experimental do IAPAR em Londrina/PR. Os acidos humicos foram extraidos com a metodologia ja estabelecida, a qual e baseada na diferenca de solubilidade com o acido fulvico e a humina. Os espectros de RMN de 13C foram obtidos em um espectrometro de 2 tesla, utilizando-se as tecnicas de polarizacao cruzada, rotacao da amostra em torno do angulo magico e desacoplamento em alta potencia. |
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Palavras-Chave: |
Alta resolucao; Espectroscopia; High resolution; Nuclear magnetic resonance; Ressonancia magnetica nuclear; RMN. |
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Thesagro: |
Manejo; Solo. |
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Thesaurus Nal: |
soil; spectroscopy. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02412naa a2200313 a 4500
001 1026884
005 1999-12-22
008 1995 bl uuuu u00u1 u #d
100 1 $aMARTIN-NETO, L.
245 $aAvaliacao dos efeitos de diferentes manejos do solo sobre aspectos qualitativos das substancias humicas por RMN do estado solido.
260 $c1995
300 $ap.62.
520 $aA necessidade do aumento crescente da producao de alimentos com concomitante preservacao ambiental constituem-se em formidaveis desafios a pesquisa agricola. Uma das consequencias e a necessidade de identificacao precisa, inclusive a nivel molecular, de alteracoes devido as diferentes praticas agricolas sobre o meio ambiente. Estamos empregando tecnicas espectroscopicas como o UV-visivel, infravermelho, ressonancia paramagnetica eletronica e fluorescencia na caracterizacao da materia organica dos solos. Neste trabalho introduzimos a utilizacao da tecnica de espectroscopia de alta resolucao em solidos por RMN na caracterizacao de um dos principais constituintes da materia organica, o acido humico. Trata-se de uma molecula complexa, contendo grupos aromaticos ealifaticos, e desempenha importante papel na fertilidade e tambem na manutencao da estrutura do solo. Amostras de solo (latossolo roxo) submetido a diferentes manejos (plantio direto, manejo convencional e area de mata virgem) foram coletados em 3 profundidades, 0-5, 5-10 e 10-20cm, na estacao experimental do IAPAR em Londrina/PR. Os acidos humicos foram extraidos com a metodologia ja estabelecida, a qual e baseada na diferenca de solubilidade com o acido fulvico e a humina. Os espectros de RMN de 13C foram obtidos em um espectrometro de 2 tesla, utilizando-se as tecnicas de polarizacao cruzada, rotacao da amostra em torno do angulo magico e desacoplamento em alta potencia.
650 $asoil
650 $aspectroscopy
650 $aManejo
650 $aSolo
653 $aAlta resolucao
653 $aEspectroscopia
653 $aHigh resolution
653 $aNuclear magnetic resonance
653 $aRessonancia magnetica nuclear
653 $aRMN
700 1 $aBONAGAMBA, T. J.
700 1 $aCOLNAGO, L. A.
700 1 $aPANEPUCCI, H. C.
700 1 $aVIEIRA, E.
700 1 $aMIYAZAWA, M.
773 $tIn: ENCONTRO DE USUARIOS DE RESSONANCIA MAGNETICA NUCLEAR, 5., maio 1995, Angra dos Reis, RJ. Resumos... Rio de Janeiro: AUREMN, 1995.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Origem |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
05/03/2013 |
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Data da última atualização: |
23/01/2023 |
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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: |
PERES, A. A. DE C.; CARVALHO, C. A. B. DE; CARVALHO, M. I. DE A. B.; VASQUEZ, H. N.; SILVA, J. F. C. DA; CLIPES, R. C.; MORENZ, M. J. F. |
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Afiliação: |
AFONSO AURÉLIO DE CARVALHO PERES, UFF; CARLOS AUGUSTO B. DE CARVALHO, APTA; MARIA INES DE AQUINO BARBOSA CARVALHO, APTA; HERNAN MALDONADO VASQUEZ, UENF-RJ; JOSE FERNANDO C. DA SILVA, UENF-RJ; RENATA COGO CLIPES, UENF-RJ; MIRTON JOSE FROTA MORENZ, CNPGL. |
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Título: |
Production and quality of milk from Mantiqueira dairy cows feeding on mombasa grass pasture and receiving different sources of roughage supplementation, |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v. 41, n. 3, p. 790-796, 2012. |
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DOI: |
https://doi.org/10.1590/S1516-35982012000300044 |
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Idioma: |
Inglês |
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Conteúdo: |
Production and quality of milk from dairy cows grazing exclusively on Mombasa grass pasture, during the spring-summer period and fed roughage supplementations, during the autumn-winter, were evaluated in two consecutive years. The pasture of 11.4 ha was divided into 57 paddocks of 2,000 m² each, including three replications with 19 paddocks each. The pasture was managed with two occupation days and 36 resting days. During the spring-summer period, cows received only grass pasture. In the autumn-winter period, they had access to Mombasa grass pasture and received roughage supplementations (black oat pasture; sorghum silage or sugarcane + urea) and pasture every 28 days, alternately. The animals had access to mineral mix and water and received 500 g of concentrated in each of the two milking times. The experimental design used was for response to continuous flow in rotational trial, similar to the Latin square model. In the spring-summer period, the average milk production was 12.2±2.2 and 14.0±3.8 kg/cow per day; for the autumn-winter period, the milk production was 13.5±2.9 and 12.1±2.5 kg/cow per day in the black oat pasture; 11.8±2.5 and 10.9±2.3 kg/cow per day in the sorghum silage and 11.3±1.8 and 8.4±1.5 kg/cow per day in the sugarcane + urea, for 1st and 2nd years evaluated, respectively. The black oat was the roughage supplementation that yielded the highest average daily milk production. There were no differences in the milk chemical composition between roughage supplementations. MenosProduction and quality of milk from dairy cows grazing exclusively on Mombasa grass pasture, during the spring-summer period and fed roughage supplementations, during the autumn-winter, were evaluated in two consecutive years. The pasture of 11.4 ha was divided into 57 paddocks of 2,000 m² each, including three replications with 19 paddocks each. The pasture was managed with two occupation days and 36 resting days. During the spring-summer period, cows received only grass pasture. In the autumn-winter period, they had access to Mombasa grass pasture and received roughage supplementations (black oat pasture; sorghum silage or sugarcane + urea) and pasture every 28 days, alternately. The animals had access to mineral mix and water and received 500 g of concentrated in each of the two milking times. The experimental design used was for response to continuous flow in rotational trial, similar to the Latin square model. In the spring-summer period, the average milk production was 12.2±2.2 and 14.0±3.8 kg/cow per day; for the autumn-winter period, the milk production was 13.5±2.9 and 12.1±2.5 kg/cow per day in the black oat pasture; 11.8±2.5 and 10.9±2.3 kg/cow per day in the sorghum silage and 11.3±1.8 and 8.4±1.5 kg/cow per day in the sugarcane + urea, for 1st and 2nd years evaluated, respectively. The black oat was the roughage supplementation that yielded the highest average daily milk production. There were no differences in the milk chemical composition between roughage supp... Mostrar Tudo |
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Palavras-Chave: |
Aveia preta; Gado de leite; Lotação rotacionada; Silagem de sorgo. |
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Thesagro: |
Cana de Açúcar. |
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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/doc/952186/1/Production-and-quality-of-milk-from-Mantiqueira-dairy-cows.pdf
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Marc: |
LEADER 02427naa a2200265 a 4500
001 1952186
005 2023-01-23
008 2012 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S1516-35982012000300044$2DOI
100 1 $aPERES, A. A. DE C.
245 $aProduction and quality of milk from Mantiqueira dairy cows feeding on mombasa grass pasture and receiving different sources of roughage supplementation,$h[electronic resource]
260 $c2012
520 $aProduction and quality of milk from dairy cows grazing exclusively on Mombasa grass pasture, during the spring-summer period and fed roughage supplementations, during the autumn-winter, were evaluated in two consecutive years. The pasture of 11.4 ha was divided into 57 paddocks of 2,000 m² each, including three replications with 19 paddocks each. The pasture was managed with two occupation days and 36 resting days. During the spring-summer period, cows received only grass pasture. In the autumn-winter period, they had access to Mombasa grass pasture and received roughage supplementations (black oat pasture; sorghum silage or sugarcane + urea) and pasture every 28 days, alternately. The animals had access to mineral mix and water and received 500 g of concentrated in each of the two milking times. The experimental design used was for response to continuous flow in rotational trial, similar to the Latin square model. In the spring-summer period, the average milk production was 12.2±2.2 and 14.0±3.8 kg/cow per day; for the autumn-winter period, the milk production was 13.5±2.9 and 12.1±2.5 kg/cow per day in the black oat pasture; 11.8±2.5 and 10.9±2.3 kg/cow per day in the sorghum silage and 11.3±1.8 and 8.4±1.5 kg/cow per day in the sugarcane + urea, for 1st and 2nd years evaluated, respectively. The black oat was the roughage supplementation that yielded the highest average daily milk production. There were no differences in the milk chemical composition between roughage supplementations.
650 $aCana de Açúcar
653 $aAveia preta
653 $aGado de leite
653 $aLotação rotacionada
653 $aSilagem de sorgo
700 1 $aCARVALHO, C. A. B. DE
700 1 $aCARVALHO, M. I. DE A. B.
700 1 $aVASQUEZ, H. N.
700 1 $aSILVA, J. F. C. DA
700 1 $aCLIPES, R. C.
700 1 $aMORENZ, M. J. F.
773 $tRevista Brasileira de Zootecnia$gv. 41, n. 3, p. 790-796, 2012.
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Embrapa Gado de Leite (CNPGL) |
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