{"id":2822,"date":"2024-03-23T17:55:43","date_gmt":"2024-03-23T16:55:43","guid":{"rendered":"https:\/\/www.rumexperts.vet\/?post_type=training&p=2822"},"modified":"2024-03-23T17:55:43","modified_gmt":"2024-03-23T16:55:43","slug":"etape-2-le-catabolisme-de-la-progesterone-un-facteur-cle-de-la-reproduction","status":"publish","type":"training","link":"https:\/\/www.rumexperts.vet\/en\/training\/etape-2-le-catabolisme-de-la-progesterone-un-facteur-cle-de-la-reproduction","title":{"rendered":"Etape 2 : le catabolisme de la progest\u00e9rone, un facteur cl\u00e9 de la reproduction."},"content":{"rendered":"

REFERENCE\u00a0: Fricke PM et MC Wiltbank. The implications of spontaneous versus synchronized ovulations on the reproductive performance of lactating dairy cow. J. Dairy Sci. 2022, 105:4679\u20134689 https:\/\/doi.org\/10.3168\/jds.2021-21431<\/a><\/p>\n

On le sait, l\u2019augmentation de la production laiti\u00e8re implique celle de l\u2019ingestion de la mati\u00e8re s\u00e8che. Une vache qui produit plus de 40 litres de lait requiert 4 fois plus d\u2019\u00e9nergie qu\u2019une vache qui ne produit pas de lait. Cette augmentation d\u2019ingestion s\u2019accompagne de celle du flux sanguin h\u00e9patique et par cons\u00e9quent du catabolisme des st\u00e9ro\u00efdes dont les oestrog\u00e8nes et la progest\u00e9rone. La corr\u00e9lation entre ces divers param\u00e8tres est \u00e9troite et comprise entre 0.85 et 0.93. L\u2019augmentation de ce catabolisme se traduit par une diminution des caract\u00e9risques de l\u2019\u0153strus, de la fertilit\u00e9 et une augmentation du risque de double ovulation et donc de g\u00e9mellit\u00e9.<\/p>\n<\/div>

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