{"id":2023,"date":"2023-10-09T11:38:51","date_gmt":"2023-10-09T09:38:51","guid":{"rendered":"https:\/\/www.rumexperts.vet\/?post_type=training&#038;p=2023"},"modified":"2024-03-25T13:48:35","modified_gmt":"2024-03-25T12:48:35","slug":"quel-programme-hormonal-de-synchronisation-pour-inseminer-des-genisses-laitieres","status":"publish","type":"training","link":"https:\/\/www.rumexperts.vet\/en\/training\/quel-programme-hormonal-de-synchronisation-pour-inseminer-des-genisses-laitieres","title":{"rendered":"Quel programme hormonal pour synchroniser les chaleurs chez la g\u00e9nisse ?"},"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>Les protocoles de type OvSynch sont bien moins souvent utilis\u00e9s chez la g\u00e9nisse que chez la vache. Il faut y voir la cons\u00e9quence de moins bons r\u00e9sultats de gestation et d\u2019une meilleure d\u00e9tection des chaleurs.<\/p>\n<p>MATERIEL ET METHODES<\/p>\n<p>Cette \u00e9tude se propose de comparer l\u2019efficacit\u00e9 de trois protocoles de synchronisation au moyen de trois groupes de g\u00e9nisses de race Holstein \u00e2g\u00e9es de 368 \u00b1 10J et dont le poids \u00e9tait compris entre\u00a0 383 et 394 \u00b1 34 kg. Toutes les premi\u00e8res ins\u00e9minations ont \u00e9t\u00e9t r\u00e9alis\u00e9es au moyen de sperme sex\u00e9. Le premier groupe de g\u00e9nisses (n=317) a re\u00e7u trois injections \u00e0 14 jours d\u2019intervalle d\u2019une PGF2\u03b1 suivi en l\u2019absence d\u2019ins\u00e9mination sur chaleurs d\u00e9tect\u00e9es d\u2019un protocole de type CoSynch (1). Le second groupe de g\u00e9nisses (n=334) a \u00e9t\u00e9 trait\u00e9 par deux injections de PGF2\u03b1 \u00e0 14 jours d\u2019intervalle suivi en l\u2019absence d\u2019ins\u00e9mination sur chaleurs d\u00e9tect\u00e9es d\u2019un protocole de type CoSynch (2). Le troisi\u00e8me groupe de g\u00e9nisses (n=315) a \u00e9t\u00e9 trait\u00e9 par un protocole de typeCoSynch. Ce protocole consistait en la mise en place durant 5 jours d\u2019un CIDR qui s\u2019accompagna au d\u00e9but d\u2019une injection de GnRH et au retrait d\u2019une injection de PGF2\u03b1, une ins\u00e9mination syst\u00e9matique et l\u2019injection d\u2019une seconde GnRH \u00e9tant r\u00e9alis\u00e9e 72 heures plus tard (3). Ces trois protocoles avaient donc une p\u00e9riode de reproduction respectivement \u00e9gale \u00e0 45, 17 et 3 jours (Voir la figure).<\/p>\n<p>Sur base d\u2019une concentration en progest\u00e9rone \u22651ng\/ml 69 % et 84 % des g\u00e9nisses ont \u00e9t\u00e9 consid\u00e9r\u00e9es comme cycl\u00e9es respectivement 14 jours et au d\u00e9but de la p\u00e9riode de reproduction.<\/p>\n<p>LEURS PRINCIPALES OBSERVATIONS<\/p>\n<p>Le protocole de type CoSynch a pour avantage de r\u00e9duire le d\u00e9lai d\u2019obtention d\u2019une gestation tout en r\u00e9duisant les manipulations des animaux et le travail de d\u00e9tection des chaleurs. Il ne s\u2019accompagne pas d\u2019une r\u00e9duction significative du pourcentage de gestation. Le choix d\u2019une strat\u00e9gie va donc d\u00e9pendre des conditions d\u2019\u00e9levage et des moyens humains disponibles.<\/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=\"800\" height=\"447\" title=\"Masello 2019 syncronisation g\u00e9nisses laiti\u00e8res\" src=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Masello-2019-syncronisation-genisses-laitieres-scaled.jpg\" data-orig-src=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Masello-2019-syncronisation-genisses-laitieres-800x447.jpg\" alt class=\"lazyload img-responsive wp-image-2025\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%271900%27%20height%3D%271062%27%20viewBox%3D%270%200%201900%201062%27%3E%3Crect%20width%3D%271900%27%20height%3D%271062%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Masello-2019-syncronisation-genisses-laitieres-200x112.jpg 200w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Masello-2019-syncronisation-genisses-laitieres-400x224.jpg 400w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Masello-2019-syncronisation-genisses-laitieres-600x335.jpg 600w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Masello-2019-syncronisation-genisses-laitieres-800x447.jpg 800w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Masello-2019-syncronisation-genisses-laitieres-1200x671.jpg 1200w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Masello-2019-syncronisation-genisses-laitieres-scaled.jpg 1900w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 640px) 100vw, 1200px\" \/><\/span><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":2024,"template":"","keyword":[],"theme":[59],"class_list":["post-2023","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\/2023","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\/2024"}],"wp:attachment":[{"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/media?parent=2023"}],"wp:term":[{"taxonomy":"keyword","embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/keyword?post=2023"},{"taxonomy":"theme","embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/theme?post=2023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}