{"id":113504,"date":"2012-03-12T00:00:00","date_gmt":"2012-03-12T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estrategias-nutricionales-en-la-alimentacion-de-cerdos-de-engorde-para-mitigar-la-excrecion-de-nitrogeno-y-fosforo-al-medio-ambiente\/"},"modified":"2012-03-12T00:00:00","modified_gmt":"2012-03-12T00:00:00","slug":"estrategias-nutricionales-en-la-alimentacion-de-cerdos-de-engorde-para-mitigar-la-excrecion-de-nitrogeno-y-fosforo-al-medio-ambiente","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/produccion-animal\/estrategias-nutricionales-en-la-alimentacion-de-cerdos-de-engorde-para-mitigar-la-excrecion-de-nitrogeno-y-fosforo-al-medio-ambiente\/","title":{"rendered":"Estrategias nutricionales en la alimentacion de cerdos de engorde para mitigar la excrecion de nitrogeno y fosforo al medio ambiente"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Cristina Lopez Garcia <\/strong><\/h2>\n<p>Esta tesis aborda la implementaci\u00f3n de estrategias nutricionales capaces de reducir la excreci\u00f3n de productos contaminantes del pur\u00edn, durante las etapas de crecimiento y acabado del cebo porcino. Disminuyendo el nivel de prote\u00edna en pienso, en un rango estrecho y cercano al utilizado a nivel comercial, en un estudio in vitro, se redujo la excreci\u00f3n del nitr\u00f3geno total y urinario en el pur\u00edn. Con esta misma estrategia en un estudio in vivo, se redujo la emisi\u00f3n de amoniaco, sin perjudicar los par\u00e1metros productivos del animal. Disminuyendo el nivel de f\u00f3sforo total e incorporando una fitasa microbiana en los piensos de cebo, se mejoraron los par\u00e1metros productivos de los cerdos y la digestibilidad del f\u00f3sforo, calcio, cobre y magnesio durante la etapa de crecimiento. El p y el cu incrementaron su retenci\u00f3n, lo que supuso una disminuci\u00f3n significativa de su excreci\u00f3n al medio ambiente.   palabras clave: amoniaco; cerdos; fitasas, contaminaci\u00f3n  this thesis addresses the implementation of nutritional strategies to reduce the excretion of pollutants (nitrogen and phosphorus) in fattening pigs. Lowering dietary cp, even in a narrow range and using cp levels close to commercial diets and environmental recommended values, urinary and total nitrogen excretion was decreased in the slurry of growing-finishing pigs in vitro, and ammonia emission was reduced, with no detrimental effects on growth performance in the growing period, in vivo. The phytase supplementation to low phosphorus diets, improved the growth performance and digestibility of phosphorus, calcium, copper and manganese. Phosphorus and copper were the most likely minerals to be affected by the addition of phytase, increasing their retention, which represented a decrease in the excretion into the environment from pig manure.  keywords: ammonia, pigs, pollutants, phitase<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estrategias nutricionales en la alimentacion de cerdos de engorde para mitigar la excrecion de nitrogeno y fosforo al medio ambiente<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estrategias nutricionales en la alimentacion de cerdos de engorde para mitigar la excrecion de nitrogeno y fosforo al medio ambiente <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Cristina Lopez Garcia <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Murcia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 03\/12\/2012<\/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>Fuensanta Hernandez Ruiperez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Antonio  gustavo Gomez castro <\/li>\n<li>pedro Luis Rodr\u00edguez medina (vocal)<\/li>\n<li>Antonio Martinez teruel (vocal)<\/li>\n<li>Mar\u00eda  dolores Megias rivas (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Cristina Lopez Garcia Esta tesis aborda la implementaci\u00f3n de estrategias nutricionales capaces de reducir la excreci\u00f3n de [&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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