{"id":2414,"date":"2023-11-29T08:58:48","date_gmt":"2023-11-29T07:58:48","guid":{"rendered":"https:\/\/www.rumexperts.vet\/?post_type=training&#038;p=2414"},"modified":"2024-03-16T08:29:44","modified_gmt":"2024-03-16T07:29:44","slug":"le-corps-jaune-chez-la-vache-nest-pas-toujours-a-la-hauteur","status":"publish","type":"training","link":"https:\/\/www.rumexperts.vet\/en\/training\/le-corps-jaune-chez-la-vache-nest-pas-toujours-a-la-hauteur","title":{"rendered":"LE CORPS JAUNE CHEZ LA VACHE N\u2019EST PAS TOUJOURS A LA HAUTEUR"},"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>CONTEXTE<\/p>\n<p>Vous le saviez sans doute mais rien de tel qu\u2019un petit rappel<\/p>\n<p>Personne ne remettra en question l\u2019importance d\u2019une concentration en P4 suffisante au cours de la phase lut\u00e9ale suivant une IA. Une d\u00e9monstration indirecte peut en \u00eatre trouv\u00e9e dans l\u2019impact positif que peuvent avoir des traitements \u00e0 base de GnRH, hCG ou encore de progest\u00e9rone lors de l\u2019IA ou de la premi\u00e8re semaine de la gestation. Pour vous en convaincre relisez les publications de Nascimento et al. . J. Dairy Sci. 2013, 96, 2873\u20132882, Yan et al. , Theriogenology 2016, 85, 1390\u20131398 et de Besbaci et al. J. Dairy Sci. 2020, 103, 2006\u20132018. Je m\u2019en suis d\u00e9j\u00e0 fait l\u2019\u00e9cho sur votre page Facebook pr\u00e9f\u00e9r\u00e9e. Durant la p\u00e9riode embryonnaire tardive, un effet positif\u00a0 de la GnRH n\u2019a \u00e9t\u00e9 observ\u00e9 que lors de gestation g\u00e9mellaire et celui de la progest\u00e9rone que si un seul corps jaune \u00e9tait pr\u00e9sent.<\/p>\n<p>Mais comment identifier une fonction lut\u00e9ale \u00ab\u00a0anormale\u00a0\u00bb<\/p>\n<p>On le sait une augmentation de la production laiti\u00e8re (&gt; 40 kg\/J) est associ\u00e9e \u00e0 celle du catabolisme de la progest\u00e9rone. Le stress thermique contribue \u00e9galement \u00e0 r\u00e9duire la synth\u00e8se de la progest\u00e9rone. Le profil d\u2019augmentation de la progest\u00e9rone apr\u00e8s une IA est \u00e9galement important puisque la fertilit\u00e9 est optimale quand une concentration &gt; 5 ng est obtenue 7 \u00e0 11 jours apr\u00e8s l\u2019IA. En pratique, ce type de profil ne peut s\u2019envisager que par le dosage en ligne (Herd navigator) de la progest\u00e9rone. L\u2019\u00e9chographie Doppler offre de nouvelles perspectives puisque la progest\u00e9ron\u00e9mie est proportionnelle au degr\u00e9 de vascularisation du corps jaune. Il reste cependant \u00e0 en d\u00e9terminer le degr\u00e9 de relation lors de la p\u00e9riode embryonnaire tardive.<\/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=\"605\" height=\"454\" title=\"Corps jaunes\" src=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/11\/Corps-jaunes.jpg\" data-orig-src=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/11\/Corps-jaunes.jpg\" alt class=\"lazyload img-responsive wp-image-2418\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27605%27%20height%3D%27454%27%20viewBox%3D%270%200%20605%20454%27%3E%3Crect%20width%3D%27605%27%20height%3D%27454%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/11\/Corps-jaunes-200x150.jpg 200w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/11\/Corps-jaunes-400x300.jpg 400w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/11\/Corps-jaunes-600x450.jpg 600w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/11\/Corps-jaunes.jpg 605w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 640px) 100vw, 605px\" \/><\/span><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":2417,"template":"","keyword":[],"theme":[59],"class_list":["post-2414","training","type-training","status-publish","has-post-thumbnail","hentry","theme-reproduction-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/training\/2414","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\/2417"}],"wp:attachment":[{"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/media?parent=2414"}],"wp:term":[{"taxonomy":"keyword","embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/keyword?post=2414"},{"taxonomy":"theme","embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/theme?post=2414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}