{"id":38813,"date":"2018-03-09T09:38:34","date_gmt":"2018-03-09T09:38:34","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/modelos-estadisticos-de-la-valoracion-genetica-en-ganado-ovino-de-aptitud-lactea\/"},"modified":"2018-03-09T09:38:34","modified_gmt":"2018-03-09T09:38:34","slug":"modelos-estadisticos-de-la-valoracion-genetica-en-ganado-ovino-de-aptitud-lactea","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-agrarias\/modelos-estadisticos-de-la-valoracion-genetica-en-ganado-ovino-de-aptitud-lactea\/","title":{"rendered":"Modelos estadisticos de la valoracion genetica en ganado ovino de aptitud lactea."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Alberto Cappelletti Carlos <\/strong><\/h2>\n<p>La hip\u00f3tesis de trabajo es modernizar la producci\u00f3n de leche mediante modelos lactacionales y modelos de controles, para su empleo en la valoraci\u00f3n gen\u00e9tica de sementales. Se utiliza un fichero de datos constituido por 13279 lactaciones y un fichero con la genealog\u00eda de los animales. Para los caracteres, producci\u00f3n de leche estandarizada a 120 d\u00edas (l120), y producci\u00f3n de leche orde\u00f1ada en el periodo posdestete (lord), los modelos fijos deber\u00edan incluir los factores reba\u00f1o-a\u00f1o-mes de parto, tipo de parto y edad al parto. Con los modelos mixtos se obtiene heredabilidad de 0,26 0,02 y 0,28 0,02 y repetibilidad de 0,42 0,03 y 0,44 0,03 para l120 y lord, respectivamente. Para la producci\u00f3n diaria, en los controles mensuales, los modelos fijos deber\u00edan incluir los factores reba\u00f1o-d\u00eda de control, tipo de parto y edad al parto. Con los modelos mixtos las estimaciones de heradabilidad por control resultan 0,17; 0,20; 0,21 y 0,20 (0,02) con repetibilidad entre 0,29 y 0,34 (0,03). Con un modelo de controles repetidos la heredabilidad es de 0,19 0,01 y la repetibilidad 0,34 0,03.  las correlaciones gen\u00e9ticas entre las producciones diarias de los cuatro controles se encuentran en el intervalo 0,81 y 0,98 (0,01) para todas las lactaciones reunidas.  la correlaci\u00f3n de spearman, entre valoraciones de sementales, a partir de lactaciones completas e incompletas extendidas a 120 d\u00edas, es de 0,963; con dos registros de 0,977 para tres registros mensuales, para sementales con al menos 40 hijas.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Modelos estadisticos de la valoracion genetica en ganado ovino de aptitud lactea.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Modelos estadisticos de la valoracion genetica en ganado ovino de aptitud lactea. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Alberto Cappelletti Carlos <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Le\u00f3n<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 13\/11\/1998<\/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>Luis Fernando De La Fuente Crespo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: fermin San primitivo tirados <\/li>\n<li>Mar\u00eda  dolores Perez-guzman palomares (vocal)<\/li>\n<li>malena Serrano nore\u00f1a (vocal)<\/li>\n<li>Juan  pablo Gutierrez garcia (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Alberto Cappelletti Carlos La hip\u00f3tesis de trabajo es modernizar la producci\u00f3n de leche mediante modelos lactacionales y [&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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