{"id":76634,"date":"2005-10-10T00:00:00","date_gmt":"2005-10-10T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/modificacion-de-la-curva-de-lactacion-en-cabras-lecheras-efectos-de-la-frecuencia-de-ordeno-el-periodo-de-secado-y-el-intervalo-entre-partos\/"},"modified":"2005-10-10T00:00:00","modified_gmt":"2005-10-10T00:00:00","slug":"modificacion-de-la-curva-de-lactacion-en-cabras-lecheras-efectos-de-la-frecuencia-de-ordeno-el-periodo-de-secado-y-el-intervalo-entre-partos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-agrarias\/modificacion-de-la-curva-de-lactacion-en-cabras-lecheras-efectos-de-la-frecuencia-de-ordeno-el-periodo-de-secado-y-el-intervalo-entre-partos\/","title":{"rendered":"Modificaci\u00f3n de la curva de lactaci\u00f3n en cabras lecheras: efectos de la frecuencia de orde\u00f1o, el periodo de secado y el intervalo entre partos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ahmed Abdel-rahman Kamal Salama <\/strong><\/h2>\n<p>Se utilizaron un total de 79 cabras murciano-granadinas en 4 experimentos destinados a  estudiar los efectos de la frecuencia de orde\u00f1o, la omisi\u00f3n del secado y el intervalo entre partos sobre la producci\u00f3n de leche y su reparto en los compartimentos de la ubre. En el exp.1, 32 cabras se orde\u00f1aron una (1x, n = 17) o dos veces diarias (2x). Un orde\u00f1o diario redujo la producci\u00f3n de leche un 18% respecto a 2x, siendo la reducci\u00f3n mayor al principio de lactaci\u00f3n. Las cabras de  menor que  4 partos perdieron mas leche que las mayor que  4 partos en 1x. La leche de las cabras 1x contuvo mas s\u00f3lidos totales, grasa y case\u00edna que la leche de las cabras 2x, aunque el porcentaje de prote\u00edna y el rcs no vari\u00f3. En el exp. 2, se estudiaron los compartimentos de ubre (cisternal y alveolar) y el retorno de leche hacia los alv\u00e9olos a diferentes intervalos entre orde\u00f1os (8, 16 y 24 h) en 14 cabras utilizadas en el exp. 1 (1x, n = 7; 2x, n = 7). La leche alveolar aument\u00f3 hasta las16 h, sin observarse cambios entre las 16 y las 24 h. La \u00e1rea cisternal (medida por ecograf\u00eda) y la leche cisternal aumentaron linealmente (r2 = 0.96 a 0.99) hasta las 24 h, indicando que el almacenamiento de leche en la cisterna es de tipo continuo, independientemente del grado de llenado del los alv\u00e9olos. a pesar del intervalo extendido entre orde\u00f1os, las cisternas de las cabras 1x no fueron mas grandes que las cisternas de las 2x. Las cabras prim\u00edparas tuvieron menor \u00e1rea cisternal y menor leche cisternal que las cabras mult\u00edparas. no se observaron cambios en el \u00e1rea cisternal despu\u00e9s de una inyecci\u00f3n de oxitocina, indicando la ausencia del fen\u00f3meno de retorno el\u00e1stico de leche de la cisterna a los alv\u00e9olos. En el exp. 3, 17 cabras gestantes se dividieron en 2 grupos: cabras que se secaron 56 d antes de la fecha esperada del parto (d56; n = 9), y cabras sin secado (d0; n = 8). Cinco cabras del grupo d0 se secaron espont\u00e1neamente 27 d antes del parto (d2<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Modificaci\u00f3n de la curva de lactaci\u00f3n en cabras lecheras: efectos de la frecuencia de orde\u00f1o, el periodo de secado y el intervalo entre partos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Modificaci\u00f3n de la curva de lactaci\u00f3n en cabras lecheras: efectos de la frecuencia de orde\u00f1o, el periodo de secado y el intervalo entre partos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ahmed Abdel-rahman Kamal Salama <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 10\/10\/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>Gerardo Caja<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: nemesio Fernandez <\/li>\n<li>crist\u00f3fol Peris ribera (vocal)<\/li>\n<li>Antonio Contreras (vocal)<\/li>\n<li>anastasio Arg\u00ed\u00bcello henr\u00edquez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ahmed Abdel-rahman Kamal Salama Se utilizaron un total de 79 cabras murciano-granadinas en 4 experimentos destinados a [&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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