{"id":70519,"date":"2018-03-09T23:15:02","date_gmt":"2018-03-09T23:15:02","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/modelizacion-de-varianzas-en-la-evaluacion-genetica-de-la-produccion-de-leche-a-305-dias-en-el-vacuno-frison-espanol\/"},"modified":"2018-03-09T23:15:02","modified_gmt":"2018-03-09T23:15:02","slug":"modelizacion-de-varianzas-en-la-evaluacion-genetica-de-la-produccion-de-leche-a-305-dias-en-el-vacuno-frison-espanol","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/politecnica-de-madrid\/modelizacion-de-varianzas-en-la-evaluacion-genetica-de-la-produccion-de-leche-a-305-dias-en-el-vacuno-frison-espanol\/","title":{"rendered":"Modelizaci\u00f3n de varianzas en la evaluaci\u00f3n genetica de la producci\u00f3n de leche a 305 dias en el vacuno fris\u00f3n espa\u00f1ol"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Juan Pe\u00f1a Alberdi <\/strong><\/h2>\n<p>Esta tesis estudia la influencia y el ajuste de la heterogeneidad de la varianza en la predicci\u00f3n de los valores gen\u00e9ticos y en la estima de los par\u00e1metros gen\u00e9ticos en la producci\u00f3n de leche ajustada a 305 d\u00edas en el vacuno fris\u00f3n espa\u00f1ol.  en el estudio de la predicci\u00f3n del valor gen\u00e9tico se compararon tres procedimientos alternativos, dos de ellos se basan en el c\u00e1lculo de f\u00e1ctores de ajustes multiplicativos sobre el dato fenotipico, y el tercer m\u00e9todo se basa en el c\u00e1lculo de f\u00e1ctores de heterogeneidad que inciden en el residuo. Los ajustes multiplicativos fueron m\u00e1s eficientes, aconsejandose el ajuste que escala tanto los efectos fijos como aleatorios por obtener mejores resultados con las lactaciones extendidas. Ambos procedimientos corrigen de forma sustancial la heterogeneidad de varianzas de la producci\u00f3n de leche en la poblaci\u00f3n espa\u00f1ola.  cualquiera de los dos procedimientos empleados proporciona estimas m\u00e1s altas de la heredabilidad que las obtenidas asumiendo homogeneidad de varianza.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Modelizaci\u00f3n de varianzas en la evaluaci\u00f3n genetica de la producci\u00f3n de leche a 305 dias en el vacuno fris\u00f3n espa\u00f1ol<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Modelizaci\u00f3n de varianzas en la evaluaci\u00f3n genetica de la producci\u00f3n de leche a 305 dias en el vacuno fris\u00f3n espa\u00f1ol <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Juan Pe\u00f1a Alberdi <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 29\/09\/2004<\/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>Mar\u00eda Jes\u00fas Caraba\u00f1o  Luengo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: marcos Rico gutierrez <\/li>\n<li>eva Ugarte sagastizabal (vocal)<\/li>\n<li>Juan  Jos\u00e9 Jurado garcia (vocal)<\/li>\n<li>leopoldo Alfonso ruiz (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Juan Pe\u00f1a Alberdi Esta tesis estudia la influencia y el ajuste de la heterogeneidad de la varianza [&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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