| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Pantanal. |
|
Data corrente: |
23/05/1996 |
|
Data da última atualização: |
04/10/2013 |
|
Autoria: |
WATERMAN, P. G.; MBI, C. N.; McKEY, D. B.; GARTLAN, J. S. |
|
Título: |
African rainforest vegetation and rumen microbes: phenolic compounds and nutrient as correlates of digestibility. |
|
Ano de publicação: |
1980 |
|
Fonte/Imprenta: |
Oecologia, v.47, n.1, p.22-33, 1980. |
|
Idioma: |
Inglês |
|
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 |
|
Palavras-Chave: |
African rainforest; Nutrient; Rumen microbes; Ruminant. |
|
Thesagro: |
Digestibilidade; Floresta Tropical; Nutriente; Ruminante; Vegetação. |
|
Thesaurus Nal: |
digestibility; phenolic compounds; vegetation. |
|
Categoria do assunto: |
-- |
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pantanal (CPAP) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Meio-Norte. |
|
Data corrente: |
24/01/2007 |
|
Data da última atualização: |
14/02/2023 |
|
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
|
Autoria: |
ARZABE, C.; SKUK, G.; SANTANA, G. G.; DELFIM, F. R.; LIMA, Y. C. C. de; ABRANTES, S. H. F. |
|
Afiliação: |
CRISTINA ARZABE, CPAMN. |
|
Título: |
Herpetofauna da área de Curimataú, Paraíba. |
|
Ano de publicação: |
2005 |
|
Fonte/Imprenta: |
In: ARAÚJO, F. S. de; RODAL, M. J. N.; BARBOSA, M. R. de V. (Org.). Análise das variações da biodiversidade do bioma caatinga: suporte a estratégias regionais de conservação. Brasília, DF: Ministério do Meio Ambiente, Secretaria de Biodiversidade e Florestas, 2005. p.259-273. |
|
Série: |
(Biodiversidade, 12). |
|
Idioma: |
Português |
|
Conteúdo: |
No Curimataú, foram registradas 52 espécies de anfíbios e répteis em duas diferentes fitofisionomias. Essas espécies se dividem em 21 anfíbios (20 anuros e uma cecília) e 31 répteis (um anfisbenídeo, 21 lagartos e nove serpentes). Na área com vegetação do tipo caatinga arbustiva/arbórea, foram registradas apenas 24 dessas espécies (oito anfíbios anuros e 16 répteis, sendo 14 lagartos e duas serpentes), representando 46% do total das espécies registradas durante o período de estudo. Por outro lado, na área com vegetação do tipo mata seca, foi registrado quase o dobro de espécies, perfazendo um total de 47 anfíbios e répteis. Estes se dividem em 21 anfíbios (20 anuros e uma cecília) e 26 répteis (um anfisbenídeo, 16 lagartos e nove serpentes). Desse modo, na área com vegetação do tipo mata seca (Parque Estadual Pedra da Boca), foram registradas 90% do total das espécies, sendo apenas três registradas exclusivamente na área com vegetação do tipo caatinga arbustiva/arbórea: Micrablepharus maximiliani, Vanzosaura rubricauda e Mabuya agmosticha. |
|
Palavras-Chave: |
Bioma; Brasil; Nordeste; Paraíba; Recursos naturais. |
|
Thesagro: |
Caatinga; Recurso Natural; Vegetação. |
|
Thesaurus NAL: |
herpetofauna. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra
X Pesquisa, Tecnologia e Engenharia |
|
Marc: |
LEADER 02080naa a2200301 a 4500
001 1069101
005 2023-02-14
008 2005 bl uuuu u00u1 u #d
100 1 $aARZABE, C.
245 $aHerpetofauna da área de Curimataú, Paraíba.
260 $c2005
490 $a(Biodiversidade, 12).
520 $aNo Curimataú, foram registradas 52 espécies de anfíbios e répteis em duas diferentes fitofisionomias. Essas espécies se dividem em 21 anfíbios (20 anuros e uma cecília) e 31 répteis (um anfisbenídeo, 21 lagartos e nove serpentes). Na área com vegetação do tipo caatinga arbustiva/arbórea, foram registradas apenas 24 dessas espécies (oito anfíbios anuros e 16 répteis, sendo 14 lagartos e duas serpentes), representando 46% do total das espécies registradas durante o período de estudo. Por outro lado, na área com vegetação do tipo mata seca, foi registrado quase o dobro de espécies, perfazendo um total de 47 anfíbios e répteis. Estes se dividem em 21 anfíbios (20 anuros e uma cecília) e 26 répteis (um anfisbenídeo, 16 lagartos e nove serpentes). Desse modo, na área com vegetação do tipo mata seca (Parque Estadual Pedra da Boca), foram registradas 90% do total das espécies, sendo apenas três registradas exclusivamente na área com vegetação do tipo caatinga arbustiva/arbórea: Micrablepharus maximiliani, Vanzosaura rubricauda e Mabuya agmosticha.
650 $aherpetofauna
650 $aCaatinga
650 $aRecurso Natural
650 $aVegetação
653 $aBioma
653 $aBrasil
653 $aNordeste
653 $aParaíba
653 $aRecursos naturais
700 1 $aSKUK, G.
700 1 $aSANTANA, G. G.
700 1 $aDELFIM, F. R.
700 1 $aLIMA, Y. C. C. de
700 1 $aABRANTES, S. H. F.
773 $tIn: ARAÚJO, F. S. de; RODAL, M. J. N.; BARBOSA, M. R. de V. (Org.). Análise das variações da biodiversidade do bioma caatinga: suporte a estratégias regionais de conservação. Brasília, DF: Ministério do Meio Ambiente, Secretaria de Biodiversidade e Florestas, 2005. p.259-273.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio-Norte (CPAMN) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
