{"id":2832,"date":"2024-03-23T18:10:54","date_gmt":"2024-03-23T17:10:54","guid":{"rendered":"https:\/\/www.rumexperts.vet\/?post_type=training&#038;p=2832"},"modified":"2024-03-23T18:10:54","modified_gmt":"2024-03-23T17:10:54","slug":"croiser-les-races-une-solution-pour-reduire-la-mortalite-embryonnaire-tardive","status":"publish","type":"training","link":"https:\/\/www.rumexperts.vet\/en\/training\/croiser-les-races-une-solution-pour-reduire-la-mortalite-embryonnaire-tardive","title":{"rendered":"Croiser les races : une solution pour r\u00e9duire la mortalit\u00e9 embryonnaire tardive ?"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p>REFERENCE :\u00a0Melendez P et al. Late embryo mortality in Holstein cows inseminated with Holstein or Limousine frozen semen. Reprod Dom Anim. 2023;58:734\u2013739\u00a0;<\/p>\n<p>De plus en plus d\u2019\u00e9leveurs laitiers ins\u00e9minent leur surplus de vaches ou g\u00e9nisses g\u00e9n\u00e9tiquement de moindre qualit\u00e9 avec du sperme de races \u00e0 viande, d\u00e9gageant ainsi un surplus de revenus par la vente des veaux crois\u00e9s ainsi obtenus. Indirectement cette strat\u00e9gie permet \u00e9galement d\u2019augmenter le potentiel g\u00e9n\u00e9tique du troupeau.<\/p>\n<p>Les auteurs de l\u2019\u00e9tude ont dans un troupeau de l\u2019\u00e9tat de G\u00e9orgie (USA) (Production moyenne de 14.600 kgs\/an, 12 % de mortalit\u00e9 embryonnaire tardive, 171 jours de VIF) ins\u00e9min\u00e9 3492 vaches Holstein au moyen de sperme de taureaux Holstein et 8355 vaches Holstein au moyen de sperme de taureaux Limousin. \u00a0Un double constat de gestation a \u00e9t\u00e9 pos\u00e9 le premier par \u00e9chographie 28 \u00e0 35 jours apr\u00e8s l\u2019ins\u00e9mination et le second par palpation manuelle 50 \u00e0 57 jours apr\u00e8s l\u2019ins\u00e9mination.<\/p>\n<p>LEURS OBSERVATIONS<\/p>\n<p>La pr\u00e9valence de la mortalit\u00e9 embryonnaire tardive (MET) a \u00e9t\u00e9 significativement plus \u00e9lev\u00e9e chez les embryons de race Holstein (15.16 %) que chez ceux de race Holstein x Limousin (9.79 %).<\/p>\n<p>Ind\u00e9pendemment de la race de l\u2019embryon, la MET a \u00e9t\u00e9 moindre chez les vaches en 1<sup>\u00e8re<\/sup> (9,9 %) ou 2<sup>\u00e8me<\/sup> lactation (11.06 %) que chez les vaches de plus de plus de 3 lactations (12.76 %). Cette diff\u00e9rence n\u2019a \u00e9t\u00e9 observ\u00e9e que durant la p\u00e9riode non estivale.<\/p>\n<p>La pr\u00e9valence de la MET a \u00e9t\u00e9 plus \u00e9lev\u00e9e en p\u00e9riode estivale (15,23 vs 9.88 %).<\/p>\n<p>Aucune diff\u00e9rence entre les ins\u00e9minateurs n\u2019a \u00e9t\u00e9 constat\u00e9e.<\/p>\n<p>UNE RECOMMANDATION<\/p>\n<p>Le recours \u00e0 du sperme Limousin (ou sans doute d\u2019autres races \u00e0 viande) pourrait \u00eatre une strat\u00e9gie pour \u00ab\u00a0r\u00e9cup\u00e9rer\u00a0\u00bb en dehors de la p\u00e9riode estivale (le stress thermique ne va pas diminuer) des vaches dont la fertilit\u00e9 ou la valeur g\u00e9n\u00e9tique sont moindres.<\/p>\n<\/div><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none\"><img decoding=\"async\" width=\"997\" height=\"701\" title=\"Holstein au pr\u00e9\" src=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Holstein-au-pre.jpg\" data-orig-src=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Holstein-au-pre.jpg\" alt class=\"lazyload img-responsive wp-image-2834\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27997%27%20height%3D%27701%27%20viewBox%3D%270%200%20997%20701%27%3E%3Crect%20width%3D%27997%27%20height%3D%27701%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Holstein-au-pre-200x141.jpg 200w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Holstein-au-pre-400x281.jpg 400w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Holstein-au-pre-600x422.jpg 600w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Holstein-au-pre-800x562.jpg 800w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Holstein-au-pre.jpg 997w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 640px) 100vw, 997px\" \/><\/span><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":2833,"template":"","keyword":[],"theme":[134,59],"class_list":["post-2832","training","type-training","status-publish","has-post-thumbnail","hentry","theme-genetique","theme-reproduction-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/training\/2832","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/training"}],"about":[{"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/types\/training"}],"author":[{"embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/users\/20"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/media\/2833"}],"wp:attachment":[{"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/media?parent=2832"}],"wp:term":[{"taxonomy":"keyword","embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/keyword?post=2832"},{"taxonomy":"theme","embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/theme?post=2832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}