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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
24/02/1999 |
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Data da última atualização: |
08/08/2023 |
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Autoria: |
GIVENS, D. I.; BAKER, C. W.; ZAMIME, B. |
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Título: |
Regions of normalised near infrared reflectance difference spectra related to the rumen digestion of straws. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Animal Feed Science and Technology, v. 36, n. 1/2, p. 1-12, Feb. 1992. |
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DOI: |
https://doi.org/10.1016/0377-8401(92)90081-G |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The normalised and detrended (SNV-D) near infrared reflectance (NIR) spectra of partially rumen digested (0, 3, 8, 16, 24, 45 and 72 h incubations) residues often cereal straws (eight barley, two wheat) untreated and treated with ammonia were obtained. Cell wall fractions were also determined on the residues. For each straw the spectra of the 0 h incubation (washed in water only) was subtracted from the spectra relating to the other incubation times. This resulted in a clear pictorial image of the time course of digestion of the water-insoluble fraction of the straws. The SNV-D difference spectra was compared with similarly obtained difference spectra for simple log 1/R values and second derivative log 1/R values. The SNV-D spectral regions which became increasingly positive with digestion time were centred around 1672 and 2254 nm. These regions appear to indicate increased concentrations of indigestible cell wall material and changes in lignin content accounted for 90?94% of the variability in the 2254 nm peak amplitude. Spectral regions centred around 1498 and 2086 nm became increasingly negative with digestion time and the shape of these SNV-D difference spectra corresponded well with the SNVD spectra of glucose and xylose. The important spectral regions were identical in untreated and ammonia-treated straws, although the changes tended to be of greater magnitude in treated material. It was concluded that SNV-D difference spectra can describe the time course of rumen digestion in spectral terms and the important spectral regions identified give a biological basis to the statistical wavelength selection used for prediction of digestibility. MenosAbstract: The normalised and detrended (SNV-D) near infrared reflectance (NIR) spectra of partially rumen digested (0, 3, 8, 16, 24, 45 and 72 h incubations) residues often cereal straws (eight barley, two wheat) untreated and treated with ammonia were obtained. Cell wall fractions were also determined on the residues. For each straw the spectra of the 0 h incubation (washed in water only) was subtracted from the spectra relating to the other incubation times. This resulted in a clear pictorial image of the time course of digestion of the water-insoluble fraction of the straws. The SNV-D difference spectra was compared with similarly obtained difference spectra for simple log 1/R values and second derivative log 1/R values. The SNV-D spectral regions which became increasingly positive with digestion time were centred around 1672 and 2254 nm. These regions appear to indicate increased concentrations of indigestible cell wall material and changes in lignin content accounted for 90?94% of the variability in the 2254 nm peak amplitude. Spectral regions centred around 1498 and 2086 nm became increasingly negative with digestion time and the shape of these SNV-D difference spectra corresponded well with the SNVD spectra of glucose and xylose. The important spectral regions were identical in untreated and ammonia-treated straws, although the changes tended to be of greater magnitude in treated material. It was concluded that SNV-D difference spectra can describe the time course of ... Mostrar Tudo |
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Palavras-Chave: |
Infrared spectrophotometry; NIR; NIRS. |
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Thesagro: |
Análise Química; Nutrição. |
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Thesaurus Nal: |
Near-infrared spectroscopy; Ruminant nutrition. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02450naa a2200241 a 4500
001 1523982
005 2023-08-08
008 1992 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/0377-8401(92)90081-G$2DOI
100 1 $aGIVENS, D. I.
245 $aRegions of normalised near infrared reflectance difference spectra related to the rumen digestion of straws.$h[electronic resource]
260 $c1992
520 $aAbstract: The normalised and detrended (SNV-D) near infrared reflectance (NIR) spectra of partially rumen digested (0, 3, 8, 16, 24, 45 and 72 h incubations) residues often cereal straws (eight barley, two wheat) untreated and treated with ammonia were obtained. Cell wall fractions were also determined on the residues. For each straw the spectra of the 0 h incubation (washed in water only) was subtracted from the spectra relating to the other incubation times. This resulted in a clear pictorial image of the time course of digestion of the water-insoluble fraction of the straws. The SNV-D difference spectra was compared with similarly obtained difference spectra for simple log 1/R values and second derivative log 1/R values. The SNV-D spectral regions which became increasingly positive with digestion time were centred around 1672 and 2254 nm. These regions appear to indicate increased concentrations of indigestible cell wall material and changes in lignin content accounted for 90?94% of the variability in the 2254 nm peak amplitude. Spectral regions centred around 1498 and 2086 nm became increasingly negative with digestion time and the shape of these SNV-D difference spectra corresponded well with the SNVD spectra of glucose and xylose. The important spectral regions were identical in untreated and ammonia-treated straws, although the changes tended to be of greater magnitude in treated material. It was concluded that SNV-D difference spectra can describe the time course of rumen digestion in spectral terms and the important spectral regions identified give a biological basis to the statistical wavelength selection used for prediction of digestibility.
650 $aNear-infrared spectroscopy
650 $aRuminant nutrition
650 $aAnálise Química
650 $aNutrição
653 $aInfrared spectrophotometry
653 $aNIR
653 $aNIRS
700 1 $aBAKER, C. W.
700 1 $aZAMIME, B.
773 $tAnimal Feed Science and Technology$gv. 36, n. 1/2, p. 1-12, Feb. 1992.
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Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 7 | |
| 1. |  | THEODORO, J. M. V.; MARTINEZ, O. D. M.; TOLEDO, R. C. L.; LISBOA, P. C.; MARTINS, A. M. D.; CARVALHO, C. W. P. de; MARTINO, H. S. D. Milheto germinado (Pennisetum glaucum (L.) reduz alterações hepática e renal e não altera hormônios tireoidianos em ratos. In: CONGRESSO ON-LINE BRASILEIRO DE TECNOLOGIA DE CEREAIS E PANIFICAÇÃO, 2020, virtual. Anais... Saudabilidade na Indústria de Cereais e In: CONGRESSO ON-LINE BRASILEIRO DE TECNOLOGIA DE CEREAIS E PANIFICAÇÃO, 2020, virtual. Anais... Saudabilidade na Indústria de Cereais e Panificação. Sete Lagoas: Universidade Federal de São João del-Rei, 2020. 4 p. CBCP; 5 a 9 out.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 2. | | THEODORO, J. M. V.; MARTINEZ, O. D. M.; GRANCIERI, M.; TOLEDO, R. C. L.; BINOTI, M. L.; MARTINS, A. M. D.; CARVALHO, C. W. P. de; LISBOA, P. C.; MARTINO, H. S. Germinated millet flour (Pennisetum Glaucum (L.) R. BR.) improves adipogenesis and glucose metabolism and maintains thyroid function in vivo. Food & Function, v. 12, p. 6083-6090, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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| 3. | | ALMEIDA, M. M.; SOUZA, F. F.; SOUZA, Y. O.; REZENDE, C. O.; CONCEIÇÃO, E. P. S.; LISBOA, P. C.; MOURA, E. G.; LUQUETTI, S. C. P. D.; SABARENSE, C. M.; GAMA, M. A. S. da; LOPES, F. C. F.; GARCIA, R. M. G. Mistura sintética de ácido linoléico conjugado CIS-9 Trans-11 e Trans-10 CIS-12 diminui níveis da proteína PPARγ no tecido adiposo de ratos Wistar machos adultos. In: REUNIÃO ANUAL DA FeSBE, 29., 2014, Caxambu. Anais... Caxambu: FeSBE, 2014.| Tipo: Artigo em Anais de Congresso |
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| 4. | | VIEIRA, A. M.; BRASIEL, P. G. de A.; FERREIRA, M. S.; MATEUS, K.; FIGUEIREDO, M. S.; LISBOA, P. C.; MOURA, E. G. de; CORRÊA, J. O. do A.; LOPES, F. C. F.; SILVA, P. H. F. da; SABARENSE, C. M.; DUTRA, S. C. P. L.; AGUIAR, A. S. de. Maternal soybean diet during lactation alters breast milk composition and programs the lipid profile in adult male rat offspring. Endocrine, v. 60, n. 2, p. 272-281, 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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| 5. | | FERREIRA, M. S.; VIEIRA, A. M.; AGUIAR, A. S. De; SABARENSE, C. M.; MOURA, E. G.; LOPES, F. C. F.; TOLEDO, F.; MATHEUS, K.; ALMEIDA, M, M. De; FIGUEIREDO, M. S.; LISBÔA, P. C.; SILVA, P. H. F. Da; BRASIEL, P. G.; LUQUETTI, C. P. D. O consumo de soja por Ratas Wistar na lactação programa parâmetros metabólicos na progênie adulta In: REUNIÃO ANUAL DA FEDERAÇÃO DE SOCIEDADES DE BIOLOGIA EXPERIMENTAL, 31., 2016, Foz do Iguaçu. Anais... São Paulo: Federação de Sociedade de Biologia Experimental, 2016.| Tipo: Resumo em Anais de Congresso |
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| 6. | | ALMEIDA, M. M. de; LUQUETTI, S. C. P. D.; SABARENSE, C. M.; CORRÊA, J. O. do A.; REIS, L. G. dos; CONCEIÇÃO, E. P. S. da; LISBOA, P. C.; MOURA, E. G. de; GAMEIRO, J.; GAMA, M. A. S. da; LOPES, F. C. F.; GARCIA, R. M. G. Butter naturally enriched in cis-9, trans-11 CLA prevents hyperinsulinemia and increases both serum HDL cholesterol and triacylglycerol levels in rats. Lipids in Health and Disease, v. 13, article 200, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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| 7. | | ALMEIDA, M. M. de; SOUZA, Y. O. de; LUQUETTI, S. C. P. D.; SABARENSE, C. M.; CORRÊA, J. O. do A.; CONCEIÇÃO, E. P. S. da; LISBOA, P. C.; MOURA, E. G. de; SOARES, S. M. A.; GUALBERTO, A. C. M.; GAMEIRO, J.; GAMA, M. A. S. da; LOPES, F. C. F.; GARCIA, R. M. G. Cis-9, trans-11 and trans-10, cis-12 CLA mixture does not change body composition, induces insulin resistance and increases serum HDL cholesterol level in rats. Journal of Oleo Science, v. 64, n. 5, p. 539-551, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
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| Registros recuperados : 7 | |
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