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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
14/11/1997 |
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Data da última atualização: |
05/11/2007 |
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Autoria: |
THIAGO, L. R. L. de S.; KELLAWAY, R. C. |
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Afiliação: |
EMBRAPA. Centro Nacional de Pesquisa de Gado de Corte (Campo Grande, MS). |
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Título: |
Botanical composition and extent of lignification affecting digestibility of wheat and oat straw and paspalum hay. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Animal Feed Science Technology, v.7, n.1, p.71-81, jan. 1982. |
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Idioma: |
Inglês |
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Notas: |
CNPGC. |
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Conteúdo: |
Samples of 1 kg of wheat straw, oat straw and paspalum hay were separated manually into botanical fractions, and the three largest fractions of each forage were analysed chemically for cell-wall constituents, silica and nitrogen. Proportions of digested dry matter, cellulose and hemicellulose, and potential digestibility for each of hese major botanical fractions were determindes when chaffed samples were placed in nylon baggs and incubated for 12, 24, 48, 72 and 96 h in the rumen of sheep fed on lucernc. Cross-sections of botanical fractions were stained with safranin and fast green, and proportions of lignifield tissue determined by ligh-microscopy and planimetry. Large differences in dry-matter digestibility between wheat straw and oat straw were attributedto the different proportions of botanical fractions. Within forages, stem was the larget fraction, the most lignified and had the lowest potential digestibility. Proportions of digested dry matter from botanical fractions at 12 h were poorly correlated with lignin content of dry matter (r = 0.25) but at 72 h. were negatively correlated with lignin content of dry matter (r = -0,84, P<0.01) and with proportions of lignified tissue (r = -0,67, P<0,05) in the respective botanical fractions. Proportions of cellulose and hemicellulose digested at 72 h were strongly correlated with lignin content of cell walls (r = -0,90,P<0,01; r = -0,85,P<0,01, respectively). Proportions of lignified tissues were les closely correlated with all measurements of digestibility... MenosSamples of 1 kg of wheat straw, oat straw and paspalum hay were separated manually into botanical fractions, and the three largest fractions of each forage were analysed chemically for cell-wall constituents, silica and nitrogen. Proportions of digested dry matter, cellulose and hemicellulose, and potential digestibility for each of hese major botanical fractions were determindes when chaffed samples were placed in nylon baggs and incubated for 12, 24, 48, 72 and 96 h in the rumen of sheep fed on lucernc. Cross-sections of botanical fractions were stained with safranin and fast green, and proportions of lignifield tissue determined by ligh-microscopy and planimetry. Large differences in dry-matter digestibility between wheat straw and oat straw were attributedto the different proportions of botanical fractions. Within forages, stem was the larget fraction, the most lignified and had the lowest potential digestibility. Proportions of digested dry matter from botanical fractions at 12 h were poorly correlated with lignin content of dry matter (r = 0.25) but at 72 h. were negatively correlated with lignin content of dry matter (r = -0,84, P<0.01) and with proportions of lignified tissue (r = -0,67, P<0,05) in the respective botanical fractions. Proportions of cellulose and hemicellulose digested at 72 h were strongly correlated with lignin content of cell walls (r = -0,90,P<0,01; r = -0,85,P<0,01, respectively). Proportions of lignified tissues were les closely correlated ... Mostrar Tudo |
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Palavras-Chave: |
Feeding; Oat. |
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Thesagro: |
Alimentação; Aveia; Carneiro; Composição Botânica; Digestibilidade; Feno; Gramínea; Gramineae; Nutrição; Palha; Trigo. |
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Thesaurus NAL: |
botanical composition; digestibility; hay; nutrition; Paspalum; sheep; wheat. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02530naa a2200385 a 4500
001 1321298
005 2007-11-05
008 1982 bl uuuu u00u1 u #d
100 1 $aTHIAGO, L. R. L. de S.
245 $aBotanical composition and extent of lignification affecting digestibility of wheat and oat straw and paspalum hay.
260 $c1982
500 $aCNPGC.
520 $aSamples of 1 kg of wheat straw, oat straw and paspalum hay were separated manually into botanical fractions, and the three largest fractions of each forage were analysed chemically for cell-wall constituents, silica and nitrogen. Proportions of digested dry matter, cellulose and hemicellulose, and potential digestibility for each of hese major botanical fractions were determindes when chaffed samples were placed in nylon baggs and incubated for 12, 24, 48, 72 and 96 h in the rumen of sheep fed on lucernc. Cross-sections of botanical fractions were stained with safranin and fast green, and proportions of lignifield tissue determined by ligh-microscopy and planimetry. Large differences in dry-matter digestibility between wheat straw and oat straw were attributedto the different proportions of botanical fractions. Within forages, stem was the larget fraction, the most lignified and had the lowest potential digestibility. Proportions of digested dry matter from botanical fractions at 12 h were poorly correlated with lignin content of dry matter (r = 0.25) but at 72 h. were negatively correlated with lignin content of dry matter (r = -0,84, P<0.01) and with proportions of lignified tissue (r = -0,67, P<0,05) in the respective botanical fractions. Proportions of cellulose and hemicellulose digested at 72 h were strongly correlated with lignin content of cell walls (r = -0,90,P<0,01; r = -0,85,P<0,01, respectively). Proportions of lignified tissues were les closely correlated with all measurements of digestibility...
650 $abotanical composition
650 $adigestibility
650 $ahay
650 $anutrition
650 $aPaspalum
650 $asheep
650 $awheat
650 $aAlimentação
650 $aAveia
650 $aCarneiro
650 $aComposição Botânica
650 $aDigestibilidade
650 $aFeno
650 $aGramínea
650 $aGramineae
650 $aNutrição
650 $aPalha
650 $aTrigo
653 $aFeeding
653 $aOat
700 1 $aKELLAWAY, R. C.
773 $tAnimal Feed Science Technology$gv.7, n.1, p.71-81, jan. 1982.
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