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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/33722
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dc.contributor.authorVitti, DMSS-
dc.contributor.authorAbdalla, A. L.-
dc.contributor.authorBueno, ICS-
dc.contributor.authorSilva, J. C.-
dc.contributor.authorCosta, C.-
dc.contributor.authorBueno, M. S.-
dc.contributor.authorNozella, E. F.-
dc.contributor.authorLongo, C.-
dc.contributor.authorVieira, E. Q.-
dc.contributor.authorCabral, SLS-
dc.contributor.authorGodoy, P. B.-
dc.contributor.authorMueller-Harvey, I-
dc.date.accessioned2014-05-20T15:22:48Z-
dc.date.accessioned2016-10-25T17:56:36Z-
dc.date.available2014-05-20T15:22:48Z-
dc.date.available2016-10-25T17:56:36Z-
dc.date.issued2005-04-04-
dc.identifierhttp://dx.doi.org/10.1016/j.anifeedsci.2004.06.004-
dc.identifier.citationAnimal Feed Science and Technology. Amsterdam: Elsevier B.V., v. 119, n. 3-4, p. 345-361, 2005.-
dc.identifier.issn0377-8401-
dc.identifier.urihttp://hdl.handle.net/11449/33722-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/33722-
dc.description.abstractThree tropical legumes, namely Leucaena leucocephala, Sesbania sesban and Cajanus cajan, were subjected to chemical analysis plus in vitro, in situ and in vivo evaluations. Three different assays were used to determine total tannins: adsorption to polyvinyl pyrrolidine (PVPP-tannins), radial diffusion (RD-tannins) and protein precipitation capacity (BSA-tannins). Total phenols, total tannins and condensed tannins were highest for Sesbania. RD-tannins were correlated with total phenols (r(2) = 0.93), PVPP-tannins (r(2) = 0.92) and condensed tannins (r(2) = 0.99). The protein precipitation capacity of Sesbania, Leucaena and Cajanus were 25.9, 6.13 and 4.05 mu g BSA/g DM, respectively.Gas production at 24h was negatively correlated with total phenols (r(2) = 0.99), PVPP-tannins (r(2) = 0.99) and condensed tannins (r(2) = 0.91). The RD-, PVPP-tannins and the response to polyethylene glycol (PEG) in the gas production assay appeared to be useful as a first screen for tannins.In situ degradability did not reflect any adverse effects of tannins. However, in vivo experiments showed that the apparent DM digestibility of Sesbania and Leucaena was lower than the basal diet. The apparent protein digestibility was lower for all legumes compared to the basal diet. Most treatments caused a negative nitrogen balance. The problems associated with browse feeding were not only related to tannin contents, other factors such as inherently poor digestibility and low energy intake may also have lead to the poor animal performance on these diets. We propose, given the limitations of current tannin assays, that it is not possible to predict beneficial or harmful nutritional effects from total tannin concentrations per se. (C) 2004 Elsevier B.V. All rights reserved.en
dc.format.extent345-361-
dc.language.isoeng-
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjecttannin assayspt
dc.subjectphenolicspt
dc.subjectgas testpt
dc.subjectpolyethylene glycolpt
dc.subjecttropical legumespt
dc.titleDo all tannins have similar nutritional effects? A comparison of three Brazilian fodder legumesen
dc.typeoutro-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.contributor.institutionUniversidade Federal de Lavras (UFLA)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionInst Zootecnia-
dc.contributor.institutionUniversidade Federal Rural de Pernambuco (UFRPE)-
dc.contributor.institutionUniv Reading-
dc.description.affiliationUniv São Paulo, Ctr Nucl Energy Agr, BR-13400970 Piracicaba, SP, Brazil-
dc.description.affiliationUniv Fed Lavras, Lavras, MG, Brazil-
dc.description.affiliationUniv Estadual Paulista Julio Mesquita Filho, Fac Med Vet & Zootecn, Botucatu, SP, Brazil-
dc.description.affiliationInst Zootecnia, Nova Odessa, SP, Brazil-
dc.description.affiliationUniv Fed Rural Pernambuco, Recife, PE, Brazil-
dc.description.affiliationUniv Reading, Dept Agr, Reading RG6 6AT, Berks, England-
dc.description.affiliationUnespUniv Estadual Paulista Julio Mesquita Filho, Fac Med Vet & Zootecn, Botucatu, SP, Brazil-
dc.identifier.doi10.1016/j.anifeedsci.2004.06.004-
dc.identifier.wosWOS:000228096700012-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofAnimal Feed Science and Technology-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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