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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
14/01/2008 |
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Data da última atualização: |
26/03/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PARAIBA, L. C.; PLESE, L. P. de M.; FOLONI, L. L.; CARRASCO, J. M. |
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Afiliação: |
LOURIVAL COSTA PARAIBA, CNPMA; Luiz Pedro de Melo Plese, Faculdade de Engenharia Agrícola-UNICAMP; Luiz Lonardoni Foloni, Faculdade de Engenharia Agrícola-UNICAMP; Jose Maria Carrasco, Universidad Politécnica de Valencia. |
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Título: |
Simulation of the fate of the insecticide carbofuran in a rice field using a level IV fugacity model. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Spanish Journal of Agricultural Research, v.5, n.1, p.43-50, 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
The object of this work was to verify the utility of a level IV fugacity model to simulate the environmental fate of the insecticide carbofuran when employed in the cultivation of irrigated rice. The model simulated the dynamic distribution of carbofuran in a system comprising of air, water, rice plants and the soil. The results indicated preferential compartments quality, and provided further knowledge of the fate of carbofuran in rice cultivation. Field experiments on rice were carried out to test the correspondence between simulated and measured carbofuran concentration in water and soil. Simulated concentrations had higher values in the compartments water > soil > rice plants > air. The model can be a useful tool for simulating the environmental fate of this insecticide and can be coupled with sensitivity and uncertainty analyses to test the influence of all input parameters on the outputs. |
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Palavras-Chave: |
Dinâmica ambiental. |
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Thesagro: |
Arroz Irrigado; Carbamato; Inseticida; Modelo de Simulação; Modelo Matemático; Poluição Ambiental. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/100179/1/2007AP-043.pdf
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Marc: |
LEADER 01632naa a2200241 a 4500
001 1015424
005 2014-03-26
008 2007 bl uuuu u00u1 u #d
100 1 $aPARAIBA, L. C.
245 $aSimulation of the fate of the insecticide carbofuran in a rice field using a level IV fugacity model.
260 $c2007
520 $aThe object of this work was to verify the utility of a level IV fugacity model to simulate the environmental fate of the insecticide carbofuran when employed in the cultivation of irrigated rice. The model simulated the dynamic distribution of carbofuran in a system comprising of air, water, rice plants and the soil. The results indicated preferential compartments quality, and provided further knowledge of the fate of carbofuran in rice cultivation. Field experiments on rice were carried out to test the correspondence between simulated and measured carbofuran concentration in water and soil. Simulated concentrations had higher values in the compartments water > soil > rice plants > air. The model can be a useful tool for simulating the environmental fate of this insecticide and can be coupled with sensitivity and uncertainty analyses to test the influence of all input parameters on the outputs.
650 $aArroz Irrigado
650 $aCarbamato
650 $aInseticida
650 $aModelo de Simulação
650 $aModelo Matemático
650 $aPoluição Ambiental
653 $aDinâmica ambiental
700 1 $aPLESE, L. P. de M.
700 1 $aFOLONI, L. L.
700 1 $aCARRASCO, J. M.
773 $tSpanish Journal of Agricultural Research$gv.5, n.1, p.43-50, 2007.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Biblioteca |
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Origem |
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Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
05/03/2024 |
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Data da última atualização: |
16/05/2024 |
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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: |
LOPES, F. C. F.; MORAES, C. T. de; GOMIDE, C. A. de M.; PACIULLO, D. S. C.; MORENZ, M. J. F. |
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Afiliação: |
FERNANDO CESAR FERRAZ LOPES, CNPGL; CONRADO TRIGO DE MORAES, CENTRAL NORTE RAÇÕES; CARLOS AUGUSTO DE MIRANDA GOMIDE, CNPGL; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; MIRTON JOSE FROTA MORENZ, CNPGL. |
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Título: |
Milk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Semina: Ciências Agrárias, v. 45, n. 1, p. 71-86, jan./fev. 2024. |
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DOI: |
http://dx.doi.org/10.5433/1679-0359.2024v45n1p71 |
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Idioma: |
Inglês |
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Conteúdo: |
This study evaluated the effects of energy supplementation on the intake and milk fatty acid composition of cows grazing BRS Kurumi elephant grass pasture during the rainy season. Two treatments (with and without supplementation) were evaluated using a switchback design with six Holstein × Gyr dairy cows after the peak of lactation. The average milk yield, body weight, and days in milk of the cows at the beginning of the study were 18.0±2.89 kg day−1, 560±66 kg, and 99±12, respectively. The evaluations were performed over three grazing cycles, with adaptation periods of 14 days and six days of sampling. In the energy supplementation treatment, each cow received 3 kg day−1 of ground corn (as-fed basis), with 2 kg day−1 at the morning milking and 1 kg day−1 at the afternoon milking. The ground corn presented 87.5% dry matter, 7.3% crude protein, 5.1% ether extract, and 85% of total digestible nutrients. The cows supplemented with ground corn consumed more oleic (+567%) and linoleic (+88%) acids. Unsupplemented cows consumed 26% more α-linolenic acid and produced milk with more oleic (+10%), vaccenic (+23%), and rumenic (+21%) acids, and less (−7%) pro-atherogenic fatty acids (lauric + myristic + palmitic acids). Milk fat from unsupplemented cows showed better nutritional quality, with lower atherogenicity and thrombogenicity indices and a higher hypo/hypercholesterolemic fatty acid ratio. |
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Palavras-Chave: |
Ácido linoleico conjugado; Ácido rumênico; Cenchrus purpureus. |
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Thesagro: |
Capim Elefante; Pennisetum Purpureum. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/266979/1/Milk-fatty-acid-profile-of-cows-grazing-elephant-grass-BRS-Kurumi-pasture.pdf
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Marc: |
LEADER 02240naa a2200241 a 4500
001 2162600
005 2024-05-16
008 2024 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.5433/1679-0359.2024v45n1p71$2DOI
100 1 $aLOPES, F. C. F.
245 $aMilk fatty acid profile of cows grazing elephant grass BRS Kurumi pasture with and without energy supplementation.$h[electronic resource]
260 $c2024
520 $aThis study evaluated the effects of energy supplementation on the intake and milk fatty acid composition of cows grazing BRS Kurumi elephant grass pasture during the rainy season. Two treatments (with and without supplementation) were evaluated using a switchback design with six Holstein × Gyr dairy cows after the peak of lactation. The average milk yield, body weight, and days in milk of the cows at the beginning of the study were 18.0±2.89 kg day−1, 560±66 kg, and 99±12, respectively. The evaluations were performed over three grazing cycles, with adaptation periods of 14 days and six days of sampling. In the energy supplementation treatment, each cow received 3 kg day−1 of ground corn (as-fed basis), with 2 kg day−1 at the morning milking and 1 kg day−1 at the afternoon milking. The ground corn presented 87.5% dry matter, 7.3% crude protein, 5.1% ether extract, and 85% of total digestible nutrients. The cows supplemented with ground corn consumed more oleic (+567%) and linoleic (+88%) acids. Unsupplemented cows consumed 26% more α-linolenic acid and produced milk with more oleic (+10%), vaccenic (+23%), and rumenic (+21%) acids, and less (−7%) pro-atherogenic fatty acids (lauric + myristic + palmitic acids). Milk fat from unsupplemented cows showed better nutritional quality, with lower atherogenicity and thrombogenicity indices and a higher hypo/hypercholesterolemic fatty acid ratio.
650 $aCapim Elefante
650 $aPennisetum Purpureum
653 $aÁcido linoleico conjugado
653 $aÁcido rumênico
653 $aCenchrus purpureus
700 1 $aMORAES, C. T. de
700 1 $aGOMIDE, C. A. de M.
700 1 $aPACIULLO, D. S. C.
700 1 $aMORENZ, M. J. F.
773 $tSemina: Ciências Agrárias$gv. 45, n. 1, p. 71-86, jan./fev. 2024.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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