{"id":77851,"date":"2018-03-09T23:23:25","date_gmt":"2018-03-09T23:23:25","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/plantas-medicinales-y-extractos-fitogenicos-como-aditivos-para-modular-la-fermentacion-ruminal\/"},"modified":"2018-03-09T23:23:25","modified_gmt":"2018-03-09T23:23:25","slug":"plantas-medicinales-y-extractos-fitogenicos-como-aditivos-para-modular-la-fermentacion-ruminal","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/plantas-medicinales-y-extractos-fitogenicos-como-aditivos-para-modular-la-fermentacion-ruminal\/","title":{"rendered":"Plantas medicinales y extractos fitog\u00e9nicos como aditivos para modular la fermentaci\u00f3n ruminal"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Rub\u00e9n Garc\u00eda Gonz\u00e1lez <\/strong><\/h2>\n<p>Los objetivos de los trabajos realizados fueron los de identificar especies vegetales que pudiesen contener metabolitos secundarios de inter\u00e9s en la modulaci\u00f3n de la fermentaci\u00f3n ruminal, y la caracterizaci\u00f3n de sus efectos en el rumen, realizando ensayos in vitro e in vivo.  la adici\u00f3n de aceites esenciales de varias plantas medicinales a cultivos in vitro, en concentraciones de 500 y 800 ppm, caus\u00f3 una importante disminuci\u00f3n de la actividad fermentativa de los microorganimos ruminales, inhibi\u00e9ndola en el caso del tomillo y del or\u00e9gano. La utilizaci\u00f3n como aditivos de los extractos de varias plantas medicinales, determin\u00f3 un aumento en la formaci\u00f3n de productos finales de la fermentaci\u00f3n, si bien este efecto pudo deberse a la presencia de glicerina en el extracto, m\u00e1s que a una acci\u00f3n estimulante sobre la actividad fermentativa.  de las 167 plantas medicinales estudiadas, \u00fanicamente con el bulbo del ajo, la corteza de fr\u00e1ngula y la ra\u00edz del ruibarbo se observ\u00f3 un efecto modulador sobre la fermentaci\u00f3n ruminal, destacando la inhibici\u00f3n de la metanog\u00e9nesis provocada por el ruibarbo y la fr\u00e1ngula.  la adici\u00f3n de ra\u00edz de ruibarbo provoc\u00f3 cambios significativos en el patr\u00f3n de fermentaci\u00f3n ruminal, entre los que cabe destacar una menor producci\u00f3n de metano y un cambio en el perfil de los \u00e1cidos grasos vol\u00e1tiles, disminuyendo la relaci\u00f3n de ac\u00e9tico\/propi\u00f3nico. Estos efectos fueron persistentes e independientes del tipo de sustrato fermentado. La magnitud de los efectos provocados estuvo directamente relacionada con la dosis de ruibarbo utilizada. concentraciones de ruibarbo en el medio de cultivo superiores a 1 g\/l determinaron un efecto inhibitorio sobre la fermentaci\u00f3n ruminal, con una menor degradaci\u00f3n del sustrato incubado. Los efectos sobre la producci\u00f3n de metano podr\u00edan deberse a una inhibici\u00f3n de la actividad de las arqueobacterias metanog\u00e9nicas.  la adici\u00f3n de corteza de fr\u00e1ngula determin\u00f3<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Plantas medicinales y extractos fitog\u00e9nicos como aditivos para modular la fermentaci\u00f3n ruminal<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Plantas medicinales y extractos fitog\u00e9nicos como aditivos para modular la fermentaci\u00f3n ruminal <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Rub\u00e9n Garc\u00eda Gonz\u00e1lez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Le\u00f3n<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 16\/12\/2005<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Secundino L\u00f3pez Puente<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: rodrigo Pel\u00e1ez su\u00e1rez <\/li>\n<li>Manuel Fondevilla camps (vocal)<\/li>\n<li>james Newbold charles (vocal)<\/li>\n<li>\u00e1ngel Ruiz mantec\u00f3n (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Rub\u00e9n Garc\u00eda Gonz\u00e1lez Los objetivos de los trabajos realizados fueron los de identificar especies vegetales que pudiesen [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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