{"id":18273,"date":"2021-05-01T00:03:12","date_gmt":"2021-05-01T05:03:12","guid":{"rendered":"https:\/\/dellait.com\/?post_type=insights&#038;p=18273"},"modified":"2024-12-19T16:09:52","modified_gmt":"2024-12-19T22:09:52","slug":"la-racion-preparto-de-la-vaca","status":"publish","type":"insights","link":"https:\/\/dellait.com\/es\/insights\/la-racion-preparto-de-la-vaca\/","title":{"rendered":"La raci\u00f3n preparto de la vaca | Dellait"},"content":{"rendered":"<p>El periodo de <strong>preparto comienza tres semanas antes del parto<\/strong>. Durante este tiempo se produce una disminuci\u00f3n gradual en el consumo de materia seca y un incremento progresivo de la demanda de nutrientes por parte del feto y de la gl\u00e1ndula mamaria. Estos factores provocan una<strong> elevada casu\u00edstica de des\u00f3rdenes metab\u00f3licos y problemas de salud durante este momento del ciclo productivo<\/strong>. Una adecuada nutrici\u00f3n y manejo a lo largo de este periodo de transici\u00f3n permite aumentar el rendimiento productivo durante toda la lactaci\u00f3n.<\/p>\n<h4>Nutrici\u00f3n energ\u00e9tica<\/h4>\n<p>El National Research Council, 2001 (NRC, 2001) recomienda un aumento de 0,3-0,4 Mcal ENL\/kg de raci\u00f3n durante las <strong>tres \u00faltimas semanas de <span style=\"text-decoration: underline; color: #333333;\"><a style=\"color: #333333; text-decoration: underline;\" href=\"https:\/\/dellait.com\/es\/diagnostico-de-gestacion-mediante-espectroscopia-infrarroja\/\" target=\"_blank\" rel=\"noopener\">gestaci\u00f3n<\/a><\/span><\/strong>, hasta llegar a niveles de 1,54-1,62 Mcal ENL\/kg. La alternativa m\u00e1s efectiva para aumentar la energ\u00eda de la raci\u00f3n de transici\u00f3n es incrementar la concentraci\u00f3n de <strong>carbohidratos no fibrosos (CNF)<\/strong>, ya que permite la adaptaci\u00f3n del rumen a la raci\u00f3n posparto de alta producci\u00f3n. El rumen debe adaptarse a dos niveles: microorganismos y papilas.<\/p>\n<p>Al incorporar a la dieta cantidades importantes de CNF (granos cereales), las bacterias amilol\u00edticas se desarrollan r\u00e1pidamente (3-5 d\u00edas) produciendo grandes cantidades de<strong> \u00e1cidos grasos vol\u00e1tiles (AGV)<\/strong>. En particular, el \u00e1cido propi\u00f3nico estimula el desarrollo de las papilas del rumen en un proceso que requiere de 4 a 6 semanas (Dirksen y col., 1985). El desarrollo de las bacterias que utilizan el \u00e1cido l\u00e1ctico derivado del propi\u00f3nico tambi\u00e9n es lento (3-4 semanas), por lo que se acumula (Calsamiglia, 1995).<\/p>\n<p>Continua leyendo este articulo publicado en <span style=\"text-decoration: underline; color: #333333;\"><em><a style=\"color: #333333; text-decoration: underline;\" href=\"https:\/\/dellait.com\/wp-content\/uploads\/2020\/05\/3-ALB-La-racion-preparto-de-la-vaca.pdf\" target=\"_blank\" rel=\"noopener\">Albeitar<\/a><\/em><\/span>.<\/p>\n","protected":false},"featured_media":21356,"template":"","categories":[690],"class_list":["post-18273","insights","type-insights","status-publish","has-post-thumbnail","hentry","category-insights-es"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La raci\u00f3n preparto de la vaca | Dellait<\/title>\n<meta name=\"description\" content=\"El crecimiento fetal eleva las 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