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Degradación in vitro de Bouteloua repens por cultivos de R. flavefaciens y F. succinogenes aislados de ganado alimentado con pastos tropicales en Colombia

dc.creatorOssa, Faisury
dc.creatorArcos, Martha
dc.creatorDíaz, Tito
dc.creatorPittroff, Wolfgang
dc.date2003-09-30
dc.date.accessioned2020-08-04T20:35:16Z
dc.date.available2020-08-04T20:35:16Z
dc.identifierhttp://revista.corpoica.org.co/index.php/revista/article/view/10
dc.identifier10.21930/rcta.vol4_num1_art:10
dc.identifier.urihttp://test.repositoriodigital.com:8080/handle/123456789/4468
dc.descriptionThe capacity to degrade the cellular wall of Bouteloua repens of 12 isolates of Ruminococcus flavefaciens and 17 isolates of Fibrobacter succinogenes was determined. A procedure was developed to standardize both, the inoculum and the substrate concentration for in vitro incubations of pure culture isolates.The ruminal bacteria were isolated from either Bos indicus cattle from the Alto Magdalena region of Colombia, grazing Bouteloua repens, and Sanmartinero cows (a Colombian criollo breed) from the  eastern lowlands (Llanos Orientales) of Colombia, grazing Brachiara spp. The isolates identity was confirmed using molecular methods. All isolates of F. succinogenes showed a high capacity to degrade cell wall preparations of Bouteloua repens, than those of R. flavefaciens (P<0.0001).The effect of individual isolated on cell wall digestibility was also highly significant (P<0.0001). Native isolates surpassed considerably the reference strains of R. flavefaciens ATCC 19208 (12.83% vs. 6.83%) and F. succinogenes ATCC 19169 (13.77% vs. 7.94%) on their capacity to digest Bouteloua repens cellular wall.This difference was highly significant (p<0.05) for all isolates. Findings suggest that in tropical conditions native ruminal bacteria has developed a high capacity to degrade lignocellulose. Further research about the potential usefulness of specific inocula or enzyme extracts developed from such isolates in improving the degradability of low quality forages by cattle or what industrial applications can be improved by the use of these products.en-US
dc.descriptionSe determinó la capacidad de degradación de la pared celular de Bouteloua repens de 12 aislados de Ruminococcus flavefaciens y 17 de Fibrobacter succinogenes. Se desarrolló un procedimiento para estandarizar la concentración, tanto del inóculo como de los sustratos, de las incubaciones in vitro de cultivos puros de los aislados. Las bactérias fueron aisladas del ganado Bos indicus, procedente de la región del Alto Magdalena, que pastoreaban Teatino (Bouteloua repens) y del ganado Sanmartinero (una raza nativa) procedente de los Llanos Orientales de Colombia, que pastoreaban Brachiaria spp. La identificación del aislado fue confirmada usando métodos moleculares. Todos los aislados de F. succinogenes mostraron mayor capacidad de degradación de las preparaciones de pared celular de Bouteloua repens que los de R. flavefaciens (P<0.0001). La capacidad de los aislados individuales para degradar la pared celular también difirió significativamente (P<0.0001). Los aislados nativos sobrepasaron considerablemente la capacidad para digerir la pared celular de Bouteloua repens de las cepas de referencia de R. flavefaciensATCC19208 (12.83% vs. 6.83%) y F. succinogenes ATCC19169 (13.77% vs. 7.94%), diferencia que fue altamente significativa (p<0.05) para todos los aislados. Los resultados sugieren que, en condiciones tropicales, las bacterias ruminales nativas tienen una alta capacidad para degradar la lignocelulosa. Se requiere mayor investigación sobre la utilidad potencial del inóculo o de extractos enzimáticos desarrollados a partir de tales aislados, a fin de aumentar la degradabilidad por el ganado de forrajes de baja calidad o para definir las aplicaciones industriales pueden ser mejoradas por el uso de estos productos. es-ES
dc.formatapplication/pdf
dc.languagespa
dc.publisherCorporación Colombiana de Investigación Agropecuaria (Agrosavia)es-ES
dc.relationhttp://revista.corpoica.org.co/index.php/revista/article/view/10/12
dc.sourceCiencia y Tecnología Agropecuaria; Vol. 4 No. 1 (2003); 29-35en-US
dc.sourceCiencia & Tecnología Agropecuaria; Vol. 4 Núm. 1 (2003); 29-35es-ES
dc.sourcerevista Corpoica Ciência e Tecnologia Agropecuária; v. 4 n. 1 (2003); 29-35pt-BR
dc.source2500-5308
dc.source0122-8706
dc.source10.21930/rcta.vol4-num1
dc.subjectEnzyme complexen-US
dc.subjectinterspecific studiesen-US
dc.subjectinoculumsen-US
dc.subjectlignocelluloseen-US
dc.subjectnative microbial isolates.en-US
dc.subjectComplejo enzimáticoes-ES
dc.subjectEstudios interespecíficoses-ES
dc.subjectInóculoses-ES
dc.subjectlignocelulosaes-ES
dc.subjectAislados nativoses-ES
dc.titleCell wall degradation of Bouteloua repens in vitro by pure cultures of R. flavefaciens and F. succinogenes isolate from cattle grazing tropical lowland pastures in Colombiaen-US
dc.titleDegradación in vitro de Bouteloua repens por cultivos de R. flavefaciens y F. succinogenes aislados de ganado alimentado con pastos tropicales en Colombiaes-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
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