{"id":2765,"date":"2024-03-20T09:19:10","date_gmt":"2024-03-20T08:19:10","guid":{"rendered":"https:\/\/www.rumexperts.vet\/?post_type=training&#038;p=2765"},"modified":"2024-03-20T09:19:10","modified_gmt":"2024-03-20T08:19:10","slug":"lecho-doppler-est-il-adapte-au-constat-de-non-gestation-chez-la-vache","status":"publish","type":"training","link":"https:\/\/www.rumexperts.vet\/en\/training\/lecho-doppler-est-il-adapte-au-constat-de-non-gestation-chez-la-vache","title":{"rendered":"L\u2019echo-doppler est-il adapt\u00e9 au constat de non-gestation chez la vache ?"},"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\u00a0: Gnemmi GM et al. Use and adequacy of non-pregnancy diagnosis in cow. Which future? Reprod Dom Anim. 2022;57(Suppl. 5):45\u201352.<\/p>\n<p>On le sait, il est plus important de pouvoir identifier les animaux non gestants que ceux qui le sont, les premiers \u00e0 la diff\u00e9rence des seconds pouvant faire l\u2019objet d\u2019une intervention th\u00e9rapeutique propre \u00e0 obtenir plus rapidement une gestation.<\/p>\n<p>L\u2019\u00e9cho-Doppler couleur est de plus en plus utilis\u00e9 en reproduction bovine. Si vous voulez en savoir plus je vous invite \u00e0 ouvrir ce lien <a href=\"https:\/\/www.thinglink.com\/card\/1165576796733702147\">https:\/\/www.thinglink.com\/card\/1165576796733702147<\/a> . Je me limiterai \u00e0 vous rappeler quelques facteurs limitants de son utilisation dans le contexte du constat n\u00e9gatif de gestation (Voir article r\u00e9f\u00e9renc\u00e9).<\/p>\n<p>Ils constituent autant de raisons explicatives de faux positifs.<\/p>\n<ul>\n<li>Le moment de la lut\u00e9olyse peut d\u00e9pendre du nombre de vagues de croissance folliculaire (2 vs 3). Elle d\u00e9bute respectivement vers le 16<sup>\u00e8me<\/sup> et le 19<sup>\u00e8me<\/sup> jour du cycle selon que ce dernier comporte 2 ou 3 vagues de croissance folliculaire. Aussi un examen pos\u00e9 vers le 19<sup>\u00e8me<\/sup>-20<sup>\u00e8me<\/sup> jour du cycle peut \u00eatre faussement positif, le corps jaune identifi\u00e9 r\u00e9sultant d\u2019u cycle \u00e0 3 vagues.<\/li>\n<li>Le degr\u00e9 de vascularisation du corps jaune pr\u00e9sente des variations individuelles. Il n\u2019est donc pas ais\u00e9 de d\u00e9terminer le moment optimal de l\u2019examen \u00e9chographique.<\/li>\n<li>Chez les vaches laiti\u00e8res hautes productrices, la majorit\u00e9 des mortalit\u00e9s embryonnaires apparaissent entre le 6<sup>\u00e8me<\/sup> et le 25<sup>\u00e8me<\/sup> jour de la gestation. Si elle survient vers le 13<sup>\u00e8me<\/sup>-14<sup>\u00e8me<\/sup> jour de gestation, la lut\u00e9olyse peut \u00eatre retard\u00e9e et la phase dioestrale allong\u00e9e.<\/li>\n<li>Lors d\u2019endom\u00e9trite subclinique ou clinique parfois constat\u00e9e apr\u00e8s une ins\u00e9mination, on peut observer une augmentation de la synth\u00e8se de PGE, responsable d\u2019une inhibition de la lut\u00e9olyse.<\/li>\n<\/ul>\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=\"960\" height=\"720\" title=\"Hanzen 2018 schema applications echo-Doppler\" src=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Hanzen-2018-schema-applications-echo-Doppler.jpg\" data-orig-src=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Hanzen-2018-schema-applications-echo-Doppler.jpg\" alt class=\"lazyload img-responsive wp-image-2767\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27960%27%20height%3D%27720%27%20viewBox%3D%270%200%20960%20720%27%3E%3Crect%20width%3D%27960%27%20height%3D%27720%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Hanzen-2018-schema-applications-echo-Doppler-200x150.jpg 200w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Hanzen-2018-schema-applications-echo-Doppler-400x300.jpg 400w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Hanzen-2018-schema-applications-echo-Doppler-600x450.jpg 600w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Hanzen-2018-schema-applications-echo-Doppler-800x600.jpg 800w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2024\/03\/Hanzen-2018-schema-applications-echo-Doppler.jpg 960w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 640px) 100vw, 960px\" \/><\/span><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":16,"featured_media":2766,"template":"","keyword":[],"theme":[],"class_list":["post-2765","training","type-training","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/training\/2765","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\/16"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/media\/2766"}],"wp:attachment":[{"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/media?parent=2765"}],"wp:term":[{"taxonomy":"keyword","embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/keyword?post=2765"},{"taxonomy":"theme","embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/theme?post=2765"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}