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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
23/05/1996 |
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Data da última atualização: |
04/10/2013 |
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Autoria: |
WATERMAN, P. G.; MBI, C. N.; McKEY, D. B.; GARTLAN, J. S. |
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Título: |
African rainforest vegetation and rumen microbes: phenolic compounds and nutrient as correlates of digestibility. |
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Ano de publicação: |
1980 |
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Fonte/Imprenta: |
Oecologia, v.47, n.1, p.22-33, 1980. |
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Idioma: |
Inglês |
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Conteúdo: |
In order to refine hypotheses concerning food selection by generalist herbivores with ruminant-like digestive systems the chemical correlates of digestibility in such a system have been studied. Samples of seeds and leaves from tree species growing in two African rain- forests (Douala-Edea Forest Reserve, Cameroon, and Kibale Forest, Uganda) were assa- yed for phenolic content and nutrient content, and in-vitro dry matter digestibility was analysed utilizing rumen inoculum from a fistulated steer. Both forests studied carry populations of colobine monkeys with ruminant like digestive tracts. Content of condensed tannins and, to a lesser extent of total phenolics, was found to be negatively correlated with digestibility; a result that may be attributable to the inactivation of microbial enzymes by tannins. The negative association of tannin content and digestibility was stronger in material from the Cameroon site, the vegetation of which contains considerably higher concentrations of tannis and is generally less digestible than that from the Ugandan site. Gross energy content of leaves was also found to be persistently negatively correlated with digestibility. The interpretation of this result is uncertain; however, gross energy yield may well reflect variation in content of cell wall polymers, especially lignin. For the complete set of data, tannins presented the strongest observed correlation with digestibility, but when only ma- ture leaves were considered the relationship with gross energy appeared stronger. No strong association was noted between high nutrient content and high digestibility. This was attributed to the fact that the assay measured the extent of digestion under standar- dised and very favourable conditions of nutrient supply. The results obtained are discus- sed in relation to observations of leaf and seed selection preferences of Colobus spp. in these two forrests. MenosIn order to refine hypotheses concerning food selection by generalist herbivores with ruminant-like digestive systems the chemical correlates of digestibility in such a system have been studied. Samples of seeds and leaves from tree species growing in two African rain- forests (Douala-Edea Forest Reserve, Cameroon, and Kibale Forest, Uganda) were assa- yed for phenolic content and nutrient content, and in-vitro dry matter digestibility was analysed utilizing rumen inoculum from a fistulated steer. Both forests studied carry populations of colobine monkeys with ruminant like digestive tracts. Content of condensed tannins and, to a lesser extent of total phenolics, was found to be negatively correlated with digestibility; a result that may be attributable to the inactivation of microbial enzymes by tannins. The negative association of tannin content and digestibility was stronger in material from the Cameroon site, the vegetation of which contains considerably higher concentrations of tannis and is generally less digestible than that from the Ugandan site. Gross energy content of leaves was also found to be persistently negatively correlated with digestibility. The interpretation of this result is uncertain; however, gross energy yield may well reflect variation in content of cell wall polymers, especially lignin. For the complete set of data, tannins presented the strongest observed correlation with digestibility, but when only ma- ture leaves were considered the relationship... Mostrar Tudo |
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Palavras-Chave: |
African rainforest; Nutrient; Rumen microbes; Ruminant. |
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Thesagro: |
Digestibilidade; Floresta Tropical; Nutriente; Ruminante; Vegetação. |
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Thesaurus Nal: |
digestibility; phenolic compounds; vegetation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02733naa a2200301 a 4500
001 1788568
005 2013-10-04
008 1980 bl --- 0-- u #d
100 1 $aWATERMAN, P. G.
245 $aAfrican rainforest vegetation and rumen microbes$bphenolic compounds and nutrient as correlates of digestibility.
260 $c1980
520 $aIn order to refine hypotheses concerning food selection by generalist herbivores with ruminant-like digestive systems the chemical correlates of digestibility in such a system have been studied. Samples of seeds and leaves from tree species growing in two African rain- forests (Douala-Edea Forest Reserve, Cameroon, and Kibale Forest, Uganda) were assa- yed for phenolic content and nutrient content, and in-vitro dry matter digestibility was analysed utilizing rumen inoculum from a fistulated steer. Both forests studied carry populations of colobine monkeys with ruminant like digestive tracts. Content of condensed tannins and, to a lesser extent of total phenolics, was found to be negatively correlated with digestibility; a result that may be attributable to the inactivation of microbial enzymes by tannins. The negative association of tannin content and digestibility was stronger in material from the Cameroon site, the vegetation of which contains considerably higher concentrations of tannis and is generally less digestible than that from the Ugandan site. Gross energy content of leaves was also found to be persistently negatively correlated with digestibility. The interpretation of this result is uncertain; however, gross energy yield may well reflect variation in content of cell wall polymers, especially lignin. For the complete set of data, tannins presented the strongest observed correlation with digestibility, but when only ma- ture leaves were considered the relationship with gross energy appeared stronger. No strong association was noted between high nutrient content and high digestibility. This was attributed to the fact that the assay measured the extent of digestion under standar- dised and very favourable conditions of nutrient supply. The results obtained are discus- sed in relation to observations of leaf and seed selection preferences of Colobus spp. in these two forrests.
650 $adigestibility
650 $aphenolic compounds
650 $avegetation
650 $aDigestibilidade
650 $aFloresta Tropical
650 $aNutriente
650 $aRuminante
650 $aVegetação
653 $aAfrican rainforest
653 $aNutrient
653 $aRumen microbes
653 $aRuminant
700 1 $aMBI, C. N.
700 1 $aMcKEY, D. B.
700 1 $aGARTLAN, J. S.
773 $tOecologia$gv.47, n.1, p.22-33, 1980.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| Registros recuperados : 4 | |
| 1. |  | LAVELLE, P.; SPAIN, A.; BLOUIN, M.; BROWN, G. G.; DECAENS, T.; GRIMALDO, M.; JIMÉNEZ, J. J.; McKEY, D.; MATHIEU, J.; VELASQUEZ, E.; ZANGERLÉ, A. Ecosystem engineers in a self-organized soil: a review of concepts and future research questions. Soil Science, v. 181, n. 3/4, p. 91-109, Mar./Apr. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Florestas. |
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| 2. | | CUNHA, L.; BROWN, G. G.; STANTON, D. W. G.; SILVA, E. da; HANSEL, F. A.; JORGE, G.; MCKEY, D.; VIDAL-TORRADO, P.; MACEDO, R. S.; VELASQUEZ, E.; JAMES, S. W.; LAVELLE, P.; KILLE, P. Soil animals and pedogenesis: the role of earthworms in anthropogenic soils. Soil Science, v. 181, n. 3/4, p. 110-125, Mar./Apr. 2016. Participação da Terra Preta de Índio Network.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Amazônia Ocidental; Embrapa Florestas. |
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| 3. | | DEMETRIO, W. C.; CONRADO, A. C.; ACIOLI, A. N. S.; FERREIRA, A. C.; BARTZ, M. L. C.; JAMES, S. W.; SILVA, E. da; MAIA, L. S.; MARTINS, G. C.; MACEDO, R. S.; STANTON, D. W. G.; LAVELLE, P.; VELASQUEZ, E.; ZANGERLÉ, A.; BARBOSA, R.; TAPIA-CORAL, S. C.; MUNIZ, A. W.; SANTOS, A.; FERREIRA, T.; SEGALLA, R. F.; DECAËNS, T.; NADOLNY, H. S.; PEÑA-VENEGAS, C. P.; MAIA, C. M. B. F.; PASINI, A.; MOTA, A. F.; TAUBE JÚNIOR, P. S.; SILVA, T. A. C.; REBELLATO, L.; OLIVEIRA JUNIOR, R. C. de; NEVES, E. G.; LIMA, H. P.; FEITOSA, R. M.; TORRADO, P. V.; McKEY, D.; CLEMENT, C. R.; SHOCK, M. P.; TEIXEIRA, W. G.; MOTTA, A. C. V.; MELO, V. F.; DIECKOW, J.; GARRASTAZU, M. C.; CHUBATSU, L. S.; KILLE, P.; BROWN, G. G.; CUNHA, L. A "dirty" footprint: macroinvertebrate diversity in Amazonian Anthropic soils. Global Change Biology, v. 27, n. 19, p. 4575-4591, Oct. 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Florestas; Embrapa Solos. |
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| 4. | | LOMBARDO, U.; ARROYO-KALIN, M.; SCHMIDT, M.; HUISMAN, H.; LIMA, H. P.; MORAES, M. de P.; NEVES, E. G.; CLEMENT, C. R.; FONSECA, J. A. da; ALMEIDA, F. O. de; ALHO, C. F. B. V.; RAMSEY, C. B.; BROWN, G. G.; CAVALLINI, M. S.; COSTA, M. L. da; CUNHA, L.; ANJOS, L. H. C. dos; DENEVAN, W. M.; FAUSTO, C.; CAROMANO, C. F.; FONTANA, A.; FRANCHETTO, B.; GLASER, B.; HECKENBERGER, M. J.; HECHT, S.; HONORATO, V.; JAROSCH, K. A.; JUNQUEIRA, A. B.; KATER, T.; TAMANAHA, E. K.; KUYPER, T. W.; LEHMANN, J.; MADELLA, M.; MAEZUMI, S. Y.; CASCON, L. M.; MAYLE, F. E.; MCKEY, D.; MORAES, B.; MORCOTE-RÍOS, G.; BARBOSA, C. A. P.; MAGALHÃES, M. P.; PRESTES-CARNEIRO, G.; PUGLIESE, F.; PUPIM, F. N.; RACZKA, M. F.; PY-DANIEL, A. R.; ROCHA, B. C. da; RODRIGUES, L.; ROSTAIN, S.; MACEDO, R. S.; SHOCK, M. P.; SPRAFKE, T.; BASSI, F. S.; VALLE, R.; VIDAL-TORRADO, P.; VILLAGRÁN, X. S.; WATLING, J.; WEBER, S. L.; TEIXEIRA, W. G. Evidence confirms an anthropic origin of Amazonian Dark Earths. Nature Communications, v. 13, n. 3444, 2022. 6 p.| Tipo: Nota Técnica/Nota Científica |
| Biblioteca(s): Embrapa Florestas; Embrapa Solos. |
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| Registros recuperados : 4 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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