{"id":2070,"date":"2023-10-09T11:29:34","date_gmt":"2023-10-09T09:29:34","guid":{"rendered":"https:\/\/www.rumexperts.vet\/?post_type=training&#038;p=2070"},"modified":"2024-03-16T09:27:46","modified_gmt":"2024-03-16T08:27:46","slug":"chez-la-vache-aussi-la-distance-entre-lanus-et-le-clitoris-est-un-facteur-de-fertilite","status":"publish","type":"training","link":"https:\/\/www.rumexperts.vet\/en\/training\/chez-la-vache-aussi-la-distance-entre-lanus-et-le-clitoris-est-un-facteur-de-fertilite","title":{"rendered":"CHEZ LA VACHE AUSSI, LA DISTANCE ENTRE L\u2019ANUS ET LE CLITORIS EST UN FACTEUR DE FERTILITE"},"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: Carrelli et al. Associations between anogenital distance and measures of fertility in lactating North American Holstein cows: A validation study. J. Dairy Sci. 2022, 105:6339\u20136352 <a href=\"https:\/\/doi.org\/10.3168\/jds.2021-20827\">https:\/\/doi.org\/10.3168\/jds.2021-20827<\/a><\/p>\n<p>ON LE SAIT<\/p>\n<ul>\n<li>L\u2019AGD (Ano Genital Distance) est chez le rat et la brebis d\u00e9termin\u00e9e par l\u2019importance de l\u2019exposition du foetus aux androg\u00e8nes.<\/li>\n<li>L\u2019administration d\u2019androg\u00e8nes durant la gestation (37 \u00e0 80 jours) induit une masculinisation du tractus g\u00e9nital sans interf\u00e9rer avec les ovaires.<\/li>\n<li>L\u2019AGD est plus \u00e9lev\u00e9e chez les free-martins au 60\u00e8me jour de gestation (3,5 mm vs &lt; 2 mm)<\/li>\n<li>Le placenta d\u2019un foetus femelle synth\u00e9tise davantage d\u2019androg\u00e8nes.<\/li>\n<li>La concentration en testost\u00e9rone est \u00e9minemmment variable chez les fetus de sexe femelle (20 \u00e0 210 pg\/ml).<\/li>\n<li>La concentration en testosterone est plus \u00e9lev\u00e9e chez les femelles gestantes que non gestantes (330 \u00b1 86 pg\/ mL vs 43 \u00b1 3 pg\/mL)<\/li>\n<\/ul>\n<p>LEUR ETUDE<\/p>\n<p>Elle a \u00e9t\u00e9 r\u00e9alis\u00e9e chez 4,709 vaches Holstein cows (154 \u00b1 94 jours de lactation et produisant en 305 jours 13,759 \u00b1 2,188 kg) dans 19 troupeaux canadiens et am\u00e9ricains.<\/p>\n<p>Leurs principales observations sont consign\u00e9es dans la figure annex\u00e9e.<\/p>\n<p>UN PEU DE DISCUSSION<\/p>\n<p>Les valeurs moyennes d\u2019AGD de cette \u00e9tude (132 mm : Holstein canadiennes) ) sont sup\u00e9rieures de 1 (Holstein canadiennes), 13 (Holstein Frisonnes irlandaises) et 18 mm (Holstein iraniennes) aux valeurs moyennes d\u2019autres \u00e9tudes relatives \u00e0 des vaches laiti\u00e8res. Les valeurs moyennes par num\u00e9ro de lactation sont comparables \u00e0 celles d\u2019une autre \u00e9tude canadienne.<\/p>\n<p>Il existe de grandes diff\u00e9rences individuelles au sein d\u2019une m\u00eame population de vaches.<\/p>\n<p>Le stade du cycle, l\u2019\u00e9tat de gestation ou de non gestation sont sans influence sur l\u2019AGD \u00e0 l\u2019exception toutefois des 2 derni\u00e8res semaines de la gestation (Rajesh et al. 2022). Il est vraisemblable que cette AGD pr\u00e9sente des valeurs diff\u00e9rentes au cours des 14 premiers jours du postpartum.<\/p>\n<p>Cette \u00e9tude a \u00e9galement d\u00e9montr\u00e9 l\u2019absence d\u2019effet n\u00e9gatif sur la production laiti\u00e8re malgr\u00e9 l\u2019augmentation de la fertilit\u00e9.<\/p>\n<p>Il semblerait donc bien que ce param\u00e8tre (AGD) puisse voire doive \u00eatre \u00e0 l\u2019avenir pris en consid\u00e9ration dans des programmes de s\u00e9lection g\u00e9n\u00e9tique.<\/p>\n<p>Il serait tr\u00e8s int\u00e9ressant \u00e9galement d\u2019en envisager l\u2019effet dans d\u2019autres races telle la Blanc Bleu Belge.<\/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=\"Carelli 2022 anus clitoris vache\" src=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Carelli-2022-anus-clitoris-vache.jpg\" data-orig-src=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Carelli-2022-anus-clitoris-vache-800x447.jpg\" alt class=\"lazyload img-responsive wp-image-2072\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%271386%27%20height%3D%27774%27%20viewBox%3D%270%200%201386%20774%27%3E%3Crect%20width%3D%271386%27%20height%3D%27774%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Carelli-2022-anus-clitoris-vache-200x112.jpg 200w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Carelli-2022-anus-clitoris-vache-400x223.jpg 400w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Carelli-2022-anus-clitoris-vache-600x335.jpg 600w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Carelli-2022-anus-clitoris-vache-800x447.jpg 800w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Carelli-2022-anus-clitoris-vache-1200x670.jpg 1200w, https:\/\/www.rumexperts.vet\/wp-content\/uploads\/2023\/10\/Carelli-2022-anus-clitoris-vache.jpg 1386w\" 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":2071,"template":"","keyword":[],"theme":[134,59],"class_list":["post-2070","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\/2070","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\/2071"}],"wp:attachment":[{"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/media?parent=2070"}],"wp:term":[{"taxonomy":"keyword","embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/keyword?post=2070"},{"taxonomy":"theme","embeddable":true,"href":"https:\/\/www.rumexperts.vet\/en\/wp-json\/wp\/v2\/theme?post=2070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}