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dc.contributor.authorPereira, Tatiana Pires
dc.date.accessioned2023-12-21T19:00:27Z-
dc.date.available2023-12-21T19:00:27Z-
dc.date.issued2016-07-27
dc.identifier.citationPEREIRA, Tatiana Pires. Determinação de tanino condensado em leguminosas forrageiras tropicais como indutor da fermentação ruminal e de sua ação anti-helmíntica. 2016. 78 f. Tese (Doutorado em Zootecnia) - Instituto de Zootecnia, Universidade Federal Rural do Rio de Janeiro, Seropédica, 2016.por
dc.identifier.urihttps://rima.ufrrj.br/jspui/handle/20.500.14407/10294-
dc.description.abstractEste trabalho foi dividido em quatro capítulos. O primeiro realizou-se com o objetivo de quantificar o teor de tanino condensado (TC) através da Reação de Stiasny e conhecer as classes de metabólitos secundários presentes pela técnica de prospecção fitoquímica e ressonância magnética nas leguminosas forrageiras tropicais Cajanus cajan (guandu-GUA), Gliricidia sepium (gliricidia-GLI), Flemingia macrophylla (flemingia-FLE), Cratylia argêntea (cratilia-CRA), Mimosa caesalpineafolia (sabiá) sendo que essa leguminosa tinha a fração casca e folha (SABc e SABf) entre os tratamentos. Os extratos obtidos foram divididos em: extrato total, número de Stiasny (NS), TC e não taninos. A FLE, CRA, GUA, GLI, SABf e SABc apresentaram os valores para o extrato total 13,20; 13,06; 8,28; 14,73; 15,67 e 6,22%, respectivamente. A reatividade pelo NS, na mesma ordem das leguminosas, foi de 11,25; 4,54; 7,37; 6,70; 23,06 e 71,62%, já o TC apresentou os seguintes valores 1,52; 0,59; 0,61; 0,96; 3,6 e 4,43% e o não tanino foi de 11,68; 12,46; 7,67; 13,75; 12,07 e 1,76%, respectivamente. Foram identificadas as seguintes classes de compostos secundários em maiores evidências: os sacarídeos, carboidratos, aminoácidos não protéicos e os glicosídeos cardioativos. Já para o TC, a intensidade foi baixa para grande parte das leguminosas, prevalecendo maior teor para CRA, GUA e SABf. Foi constatado como componente principal nos extratos o metil-inositol (açúcar). O segundo capítulo teve como objetivo avaliar nas leguminosas citadas acima e mais uma espécie, o Stylosanthes spp (estilosantes-EST), analisar os constituintes do TC com uso de solvente orgânico, tanino solúvel (TCE), tanino aderido à proteína (TCPB), tanino aderido à fibra (TCFB) e taninos condensados totais (TCT), características estruturais tais como: propelargonidina (PP); prodelfinidina (PD) e procianidina (PC); peso molecular (grau de polimerização–(DP); distância do peso molecular distribuído do polímero (PDI); peso médio da massa molecular (Mw); número médio da massa molecular (Mn); além de determinar a atividade biológica, através da técnica de proteínas precipitáveis por fenóis (PPP). As variáveis TCE, TCPB e TCT apresentadas foram influenciadas pelas diferentes espécies (P≤0,05). A fração TCFB não foi constatada nas leguminosas. Os pesos moleculares (Mw) foram influenciados pelas diferentes espécies (P≤0,05), variando de 737 a 1168 Da. As características estruturais (PP, PD, PC e PD:PC) tiveram variação entre as espécies estudadas. Objetivou-se com o terceiro capítulo avaliar a metanogênese (metano total (CH4-total), incubado (CH4 inc.) e fermentado (CH4 ferm.) e os parâmetros de fermentação ruminal (produção de gás total (PGT), pH, amônia (N-NH3), ácidos graxos de cadeia curta (AGCC) e digestibilidade in vitro da matéria orgânica (DIVMO) frente aos TC presentes nas leguminosas e feno de Urochloa brizantha cv. marandu como controle (CTL). Foi testado também o efeito do polietileno glicol (PEG) sobre a fração folha do sabiá, que teve conteúdo de TC de 15,97%. Não foi observado alteração no pH (P≥0,05) para os tratamentos avaliados. No entanto, foram observadas diminuição da produção total de gás e produção de metano para todos os tratamentos com presença de TC (P≤0,05). Para o tratamento com PEG houve aumento de 27,01 (8% PEG) e 35,01 (16% PEG) na produção total de gás e 3,59 (8% PEG) e 4,15 (16% PEG) na produção de metano. GUA, FLE, SABc e SABf foram capazes de modificar (P≤0,05) a concentração de N-NH3 (mg/dL) juntamente com o CTL, que também apresentou valores inferiores comparado as leguminosas com traços e ausência do TC (ETL, CRA e GLI). Houve diferença (P≤0,05) para DIVMO entre as leguminosas e o controle, observou-se menor digestibilidade (P≤0,05) para FLE, GUA e SABf, em relação ao CTL, não sendo digestível o SABc. A DIVMO foi afetada pela adição de PEG na dieta do SABf. No perfil dos AGCC houve diferença (P≤0,05) para os tratamentos avaliados, com menor valor para as leguminosas com presença de TC. O quarto capítulo teve como objetivo testar o efeito da técnica de inibição da migração larval (IML) in vitro do TC proveniente das leguminosas em estudo (FLE, CRA, GUA, GLI, EST, SABf e SABc) sobre as larvas infectantes L3 do nematóde o Haemonchus contortus (HC) comparando com Ivermectina e controle negativo (líquido ruminal e tampão). Entre as leguminosas estudadas o SABf e GUA não diferiram entre si (P≥0,05), com as maiores porcentagens IML (34,75% e 34,33%). As leguminosas GUA, FLE e SABc não diferiram entre si (P≥0,05), apresentando moderados valores de IML (30,25%, 30,0% e 29,75%, respectivamente). Entre as leguminosas estudadas a menor porcentagem de IML foi para CRA (18,46%), GLI (23,75%) e controle negativo (líquido de rúmen e tampão) valores próximos do controle positivo com Ivermectina (22,0%).por
dc.description.sponsorshipFAPERJ - Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiropor
dc.formatapplication/pdf*
dc.languageporpor
dc.publisherUniversidade Federal Rural do Rio de Janeiropor
dc.rightsAcesso Abertopor
dc.subjectEnteric methaneeng
dc.subjectSecondary metaboliteeng
dc.subjectStructural characteristicseng
dc.subjectCaracterísticas estruturais. .por
dc.subjectMetabólito secundáriopor
dc.subjectMetano entéricopor
dc.titleDeterminação de tanino condensado em leguminosas forrageiras tropicais como indutor da fermentação ruminal e de sua ação anti-helmínticapor
dc.title.alternativeDetermination of condensed tannins in tropical forage legumes as an inducer of ruminal fermentation and its anthelmintic actioneng
dc.typeTesepor
dc.description.abstractOtherThis work was divided in four chapters, in which the first was performed with the goal of quantifying the condensed tannin (CT) content by the Stiasny’s reaction and to determine the classes of secondary metabolites present by the phytochemical prospection technique and magnetic resonance in the tropical forage legumes Cajanus cajan (guandu - GUA), Gliricidia sepium (gliricidia - GLI), Flemingia macrophylla (flemingia - FLE), Cratylia argêntea (cratilia - CRA), Mimosa caesalpineafolia (sabiá) (this legume divided into bark and leaf fraction – SABc and SABf) among the treatments. The extracts obtained were divided into: total extract, number of Stiasny (NS), CT and non-tannins. The FLE, CRA, GUA,GLI, SABf and SABc had obtained the following values for total extract: 13.20; 13.06; 8.28; 14.73; 15.67 and 6.22%, respectively. The reactivity by NS, in the same order of legumes, was 11.25; 4.54; 7.37; 6.70; 23.06 and 71.62%, whereas the CT presented the following values: 1.52; 0.59; 0.61; 0.96; 3.6 and 4.43%, and non-tannin was 11.68; 12.46; 7.67; 13.75; 12.07 and 1.76%, respectively. The following classes of secondary metabolites were identified with greater evidence: saccharides, carbohydrates, non-protein amino acids and glicosídeos cardioativos. For the CT, the intensity was low for most of the legumes, with greater content in CRA, GUA and SABf. The wain compound in the extracts was methyl-inositol (sugar). The second chapter had the objective of assaying in the legumes mentioned above and one more specie, Stylosanthes spp. (estilosantes-EST), condensed tannin (CT) constituents, with the use of organic solvents, soluble CT (ECT), CT adhered to protein (PBCT), CT adhered to fiber (FBCT), and total CT (TCT), CT structural pro-pelargonidin (PP); prodelfinidin (PD) and procyanidin (PC), molecular weight (polymerization degree (DP), molecular distance distributed of the polymer (PDI); average weight of molecular mass (Mw), and average number of molecular mass (Mn), and the biological activity through precipitated proteins by phenols (PPP). The variables ECT, PBCT, and TCT presented were influenced by different species (P≤0.05). The FBCT fraction was not found in the legumes. Molecular weights (DP, PDI, Mw e Mn) were affected by the different species (P≤0.05), ranging from 737 to 1168 da. The structural characteristics (PP, PD, PC and PD:PC) varied among the species. In the third chapter I evaluated methanogenesis (total methane (CH4total)), incubated (CH4inc) and fermented (CH4ferm) and ruminal fermentation parameters total gas production (PGT), pH, ammonium (N-NH3), short-chain fatty acids (SCFA) and in vitro organic matter disappearance (IVOMD) as they related to CT present in the legumes and Urochloa brizantha cv. marandu hay as control (CTL). The effect of polyethylene glycol (PEG) on the leaf fraction of sabiá was tested as well, which had a CT content of 15.97%. No alteration in the pH (P≥0.05) for the treatments evaluated. However, a decrease of total gas and methane production for all the treatments with presence of CT (P≤0.05). When PEG was added, there was a 27.01 (8% PEG) and 35.01 (16% PEG) increase in total gas production and 3.59 (8% PEG) and 4.15 (16% PEG) of methane production. GUA, FLE, SABc and SABf were capable of modifying (P≤0.05) the content of NH3-N (mg/dL), along with the CTL, which also presented lower values compared to legumes with no or only traces of CT (ETL, CRA and GLI). There was significant difference (P≤0.05) for IVOMD between the legumes and control, it was observed lower disappearance (P≤0.05) for FLE, GUA and SABf in relation to CTL, while SABc did disappear. The SABf IVOMD was affected by the addiction of PEG. There was lower digestibility for FLE, GUA and SABf in relation to the CTL, while the bark fraction of SAB did not disappear at all. On the SCFA profile, there was difference (P≤0.05) among the treatments evaluated, with lower values for the legumes with presence of CT. In the fourth chapter I tested the effect of CT from the legumes in study (FLE, CRA, GUA, GLI, EST, SABf and SABc) on larval migration inhibition (LMI) in vitro, on the infective larvae L3 of the nematode Haemonchus contortus (HC), compared with Ivermectin and a negative control (rumen fluid and buffer). Among the legumes studied, SABf and GUA did not differ (P≥0.05), with the greater (P≤0.05) LMI percentage (34.75% and 34.33%) than the other entries. The legumes GUA, FLE and SABc did not differ (P≥0.05), presenting moderate values of LMI (30.25%, 30.0% and 29.75%, respectively). Among the legumes studied, the lowest LMI percentage was CRA (18.46%), GLI (23.75%) and negative control (rumen fluid and buffer), with values near (P≥0.05) from to Ivermectin (22.0%).eng
dc.contributor.advisor1Modesto, Elisa Cristina
dc.contributor.advisor1IDCPF: 992.419.196-04por
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/4560148363510585por
dc.contributor.advisor-co1Carvalho, Mario Geraldo de
dc.contributor.advisor-co1IDCPF: 257.152.327-91por
dc.contributor.advisor-co1Latteshttp://lattes.cnpq.br/9794451665032168por
dc.contributor.referee1Muir, James Pierre
dc.contributor.referee2Ferreira, Evandro Maia
dc.contributor.referee3Almeida, João Carlos de Carvalho
dc.contributor.referee4Nepomuceno, Delci de Deus
dc.creator.IDCPF: 088.520.986-90por
dc.creator.Latteshttp://lattes.cnpq.br/8530217517371963por
dc.publisher.countryBrasilpor
dc.publisher.departmentInstituto de Zootecniapor
dc.publisher.initialsUFRRJpor
dc.publisher.programPrograma de Pós-Graduação em Zootecniapor
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