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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
25/11/2002 |
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Data da última atualização: |
25/11/2002 |
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Autoria: |
TOKUDA, T.; MATSUI, T.; YANO, H. |
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Título: |
Effects of light and food on plasma leptin concentrations in ewes. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Animal Science, v. 71, n. 2, p. 235-242, 2000. |
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Idioma: |
Inglês |
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Conteúdo: |
Plasma leptin concentration shows pulsatility and diurnal rhythm in humans. However, there are few reports concerning the 24-h profile of circulating leptin levels in ruminants. Five crossbred ewes were housed in metabolism cages under a l-h light-dark cycle. The ewes were offered alfalfa hay daily to meet their energy requirement. Blood samples were collected at 15-min intervals for 24 h. Plasma leptin concentrations were determined using a radioimmunoassay and the profile of plasma leptin levels was analysed by the PULSAR algorithmic program for detecting pulse. Plasma leptin concentration changed in a pulsatile fashion. The mean leptin concentration was 2.93 ng/ml. The mean pulse frequency was 4.8 pulses per day and the mean pulse amplitude was 0.67 ng/ml with an average pulse length of 1:13 h. Plasma leptin leveI was not offected by feeding or lighting cycle. These results indicate that plasma leptin level in sheep shows pulsatility but diurnal rhythm is not exhibited.
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Palavras-Chave: |
Concentração plasmática; Variação diurna. |
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Thesagro: |
Hormônio; Ovelha; Ovino. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01520naa a2200205 a 4500
001 1528896
005 2002-11-25
008 2000 bl uuuu u00u1 u #d
100 1 $aTOKUDA, T.
245 $aEffects of light and food on plasma leptin concentrations in ewes.
260 $c2000
520 $aPlasma leptin concentration shows pulsatility and diurnal rhythm in humans. However, there are few reports concerning the 24-h profile of circulating leptin levels in ruminants. Five crossbred ewes were housed in metabolism cages under a l-h light-dark cycle. The ewes were offered alfalfa hay daily to meet their energy requirement. Blood samples were collected at 15-min intervals for 24 h. Plasma leptin concentrations were determined using a radioimmunoassay and the profile of plasma leptin levels was analysed by the PULSAR algorithmic program for detecting pulse. Plasma leptin concentration changed in a pulsatile fashion. The mean leptin concentration was 2.93 ng/ml. The mean pulse frequency was 4.8 pulses per day and the mean pulse amplitude was 0.67 ng/ml with an average pulse length of 1:13 h. Plasma leptin leveI was not offected by feeding or lighting cycle. These results indicate that plasma leptin level in sheep shows pulsatility but diurnal rhythm is not exhibited.
650 $aHormônio
650 $aOvelha
650 $aOvino
653 $aConcentração plasmática
653 $aVariação diurna
700 1 $aMATSUI, T.
700 1 $aYANO, H.
773 $tAnimal Science$gv. 71, n. 2, p. 235-242, 2000.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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 | 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
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
11/02/2014 |
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Data da última atualização: |
12/02/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
OLIVEIRA, L. M. T.; FRANÇA, G. B.; NICÁCIO, R. M.; ANTUNES, M. A. H.; COSTA, T. C. C.; TORRES JR. A. R.; FRANÇA, J. R. A. |
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Afiliação: |
THOMAZ CORREA E CASTRO DA COSTA, CNPMS. |
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Título: |
A study of the El Niño-Southern Oscillation influence on vegetation indices in Brazil using time series analysis from 1995 to 1999. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
International Journal of Remote Sensing, Basingstoke, v. 31, n. 2, p. 423-437, 2010. |
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DOI: |
10.1080/01431160902893477 |
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Idioma: |
Inglês |
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Thesagro: |
Clima; Cobertura vegetal; Mudança Climática; Vegetação. |
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Thesaurus NAL: |
Climate change; Vegetation. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 00872naa a2200265 a 4500
001 1979468
005 2014-02-12
008 2010 bl uuuu u00u1 u #d
024 7 $a10.1080/01431160902893477$2DOI
100 1 $aOLIVEIRA, L. M. T.
245 $aA study of the El Niño-Southern Oscillation influence on vegetation indices in Brazil using time series analysis from 1995 to 1999.$h[electronic resource]
260 $c2010
650 $aClimate change
650 $aVegetation
650 $aClima
650 $aCobertura vegetal
650 $aMudança Climática
650 $aVegetação
700 1 $aFRANÇA, G. B.
700 1 $aNICÁCIO, R. M.
700 1 $aANTUNES, M. A. H.
700 1 $aCOSTA, T. C. C.
700 1 $aTORRES JR. A. R.
700 1 $aFRANÇA, J. R. A.
773 $tInternational Journal of Remote Sensing, Basingstoke$gv. 31, n. 2, p. 423-437, 2010.
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Embrapa Milho e Sorgo (CNPMS) |
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