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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
24/08/1995 |
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Data da última atualização: |
16/07/2012 |
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Autoria: |
CLARK, K. W.; MOTT, G. O. |
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Título: |
The dry matter digestion in vitro of forage crops. |
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Ano de publicação: |
1960 |
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Fonte/Imprenta: |
Canadian Journal of Plant Science, v.40, n.1, p.123-129, Jan.1960. |
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Idioma: |
Inglês |
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Conteúdo: |
An artificial rumen technique was evaluated as a method of determining the dry matter digestion of forages. The digestibility estimates obtained in the spring were significantly correlated (r = 0.77xx) with estimates obtained on these forages from a conventional digestion trials, whereas in the fall the coefficients were low and longer significantly correlated ( r = 0.49) with the conventional trial data. A medium maturing timothy polycross nursey was harvested at 10-day intervals throughout the first growth cycle. With the exception of the April 14th stage there were no significant differences in digestibility between the clones harvested in the early-leaf stage. Significant differences between selections were obtained in digestibility at later stages of maturity which may be a function of the leaf-stem ratio, the amount of leaf firing and thickness of the culms as well as changes in chemical composition. The per cent fructose content of this timothy herbage was significantly correlated (r = 0.78xx) with the dry matter digestibility only at the first stage of cutting. Changes in dry matter digestion using this artificial rumen technique were observed, with
digestion estimates being higher during the spring and summer than during fall and winter. The method of drying herbage for these in vitro digestion experiments was studied with the conclusion that there was a significant difference in favour of freeze-drying. The dry matter digestion coefficients of the freeze-dried herbage were comparable to those expected for herbage of such qualitydigested in vivo. The use of an artificial rumen technique for estimating digestibility of clonal material shows promise for the plant breeder, providing certain precautions are taken. All lines to be screened should be included in a single trial to ensure maximum control of variables associated withtechnique. Samples should be uniformly processed, preferably freeze-dried, and digested with a single sample of rumen fluid. MenosAn artificial rumen technique was evaluated as a method of determining the dry matter digestion of forages. The digestibility estimates obtained in the spring were significantly correlated (r = 0.77xx) with estimates obtained on these forages from a conventional digestion trials, whereas in the fall the coefficients were low and longer significantly correlated ( r = 0.49) with the conventional trial data. A medium maturing timothy polycross nursey was harvested at 10-day intervals throughout the first growth cycle. With the exception of the April 14th stage there were no significant differences in digestibility between the clones harvested in the early-leaf stage. Significant differences between selections were obtained in digestibility at later stages of maturity which may be a function of the leaf-stem ratio, the amount of leaf firing and thickness of the culms as well as changes in chemical composition. The per cent fructose content of this timothy herbage was significantly correlated (r = 0.78xx) with the dry matter digestibility only at the first stage of cutting. Changes in dry matter digestion using this artificial rumen technique were observed, with
digestion estimates being higher during the spring and summer than during fall and winter. The method of drying herbage for these in vitro digestion experiments was studied with the conclusion that there was a significant difference in favour of freeze-drying. The dry matter digestion coefficients of the freeze-dried he... Mostrar Tudo |
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Palavras-Chave: |
Colheita de forragem; Dry matter; Pasture. |
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Thesagro: |
Digestibilidade; Matéria Seca; Pastagem. |
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Thesaurus Nal: |
digestibility; forage crops. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02592naa a2200229 a 4500
001 1785804
005 2012-07-16
008 1960 bl --- 0-- u #d
100 1 $aCLARK, K. W.
245 $aThe dry matter digestion in vitro of forage crops.
260 $c1960
520 $aAn artificial rumen technique was evaluated as a method of determining the dry matter digestion of forages. The digestibility estimates obtained in the spring were significantly correlated (r = 0.77xx) with estimates obtained on these forages from a conventional digestion trials, whereas in the fall the coefficients were low and longer significantly correlated ( r = 0.49) with the conventional trial data. A medium maturing timothy polycross nursey was harvested at 10-day intervals throughout the first growth cycle. With the exception of the April 14th stage there were no significant differences in digestibility between the clones harvested in the early-leaf stage. Significant differences between selections were obtained in digestibility at later stages of maturity which may be a function of the leaf-stem ratio, the amount of leaf firing and thickness of the culms as well as changes in chemical composition. The per cent fructose content of this timothy herbage was significantly correlated (r = 0.78xx) with the dry matter digestibility only at the first stage of cutting. Changes in dry matter digestion using this artificial rumen technique were observed, with digestion estimates being higher during the spring and summer than during fall and winter. The method of drying herbage for these in vitro digestion experiments was studied with the conclusion that there was a significant difference in favour of freeze-drying. The dry matter digestion coefficients of the freeze-dried herbage were comparable to those expected for herbage of such qualitydigested in vivo. The use of an artificial rumen technique for estimating digestibility of clonal material shows promise for the plant breeder, providing certain precautions are taken. All lines to be screened should be included in a single trial to ensure maximum control of variables associated withtechnique. Samples should be uniformly processed, preferably freeze-dried, and digested with a single sample of rumen fluid.
650 $adigestibility
650 $aforage crops
650 $aDigestibilidade
650 $aMatéria Seca
650 $aPastagem
653 $aColheita de forragem
653 $aDry matter
653 $aPasture
700 1 $aMOTT, G. O.
773 $tCanadian Journal of Plant Science$gv.40, n.1, p.123-129, Jan.1960.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Semiárido. |
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Data corrente: |
11/12/2015 |
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Data da última atualização: |
15/02/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 3 |
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Autoria: |
ALMEIDA, E. F.; MOTA, J. H.; MENEZES, C. B.; YURI, J. E.; RESENDE, G. M. |
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Afiliação: |
CICERO BESERRA DE MENEZES, CNPMS; JONY EISHI YURI, CPATSA; GERALDO MILANEZ DE RESENDE, CPATSA. |
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Título: |
Desempenho agronômico de híbridos de sorgo granífero na safrinha em Jataí-GO. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Scientia Plena, Aracaju, v. 11, n. 12, p. 1-7, 2015. |
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DOI: |
10.14808/sci.plena.20 15 . 12 0202 |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste estudo foi avaliar as características agronômicas de 25 híbridos de sorgo granífero cultivados no período da safrinha em Jataí-GO. Foi instalado um experimento em blocos casualizados com três repetições e avaliadas as seguintes características: número de dias entre a semeadura e o emborrachamento; número de dias da semeadura até o florescimento; altura de plantas; comprimento da panícula, peso de mil grãos e rendimento. Verificou-se que os híbridos não diferenciaram entre si quanto ao emborrachamento, florescimento e altura de plantas. Para o tamanho de panícula os híbridos que se destacaram foram: 1167017, 1170017 e 1169074. Os híbridos DKB550, 1237030, 1170017, 1167017 e 1099044 apresentaram os maiores pesos de mil grãos. Em relação ao rendimento, os híbridos 1238020, 1169092, 1G244, 843009, 1236020, 1099034, 1167053, BRS330, 1105661, 1099044, 1105653, 1167017, 729033 e 1167093 apresentaram maiores rendimentos, o que pode estar ligado à maior adaptação dos materiais às condições edafoclimáticas da região. |
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Palavras-Chave: |
Cultivo. |
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Thesagro: |
Características agronômicas; Produtividade; Rendimento; Sorghum bicolor; Variedade. |
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Thesaurus NAL: |
Agronomic traits; Varieties; Yields. |
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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/135464/1/Desempenho-agronomico.pdf
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Marc: |
LEADER 01893naa a2200289 a 4500
001 2031498
005 2016-02-15
008 2015 bl uuuu u00u1 u #d
024 7 $a10.14808/sci.plena.20 15 . 12 0202$2DOI
100 1 $aALMEIDA, E. F.
245 $aDesempenho agronômico de híbridos de sorgo granífero na safrinha em Jataí-GO.$h[electronic resource]
260 $c2015
520 $aO objetivo deste estudo foi avaliar as características agronômicas de 25 híbridos de sorgo granífero cultivados no período da safrinha em Jataí-GO. Foi instalado um experimento em blocos casualizados com três repetições e avaliadas as seguintes características: número de dias entre a semeadura e o emborrachamento; número de dias da semeadura até o florescimento; altura de plantas; comprimento da panícula, peso de mil grãos e rendimento. Verificou-se que os híbridos não diferenciaram entre si quanto ao emborrachamento, florescimento e altura de plantas. Para o tamanho de panícula os híbridos que se destacaram foram: 1167017, 1170017 e 1169074. Os híbridos DKB550, 1237030, 1170017, 1167017 e 1099044 apresentaram os maiores pesos de mil grãos. Em relação ao rendimento, os híbridos 1238020, 1169092, 1G244, 843009, 1236020, 1099034, 1167053, BRS330, 1105661, 1099044, 1105653, 1167017, 729033 e 1167093 apresentaram maiores rendimentos, o que pode estar ligado à maior adaptação dos materiais às condições edafoclimáticas da região.
650 $aAgronomic traits
650 $aVarieties
650 $aYields
650 $aCaracterísticas agronômicas
650 $aProdutividade
650 $aRendimento
650 $aSorghum bicolor
650 $aVariedade
653 $aCultivo
700 1 $aMOTA, J. H.
700 1 $aMENEZES, C. B.
700 1 $aYURI, J. E.
700 1 $aRESENDE, G. M.
773 $tScientia Plena, Aracaju$gv. 11, n. 12, p. 1-7, 2015.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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