Process for the synchronization of ovulation for timed...

A - Human Necessities – 61 – K

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A61K 38/24 (2006.01) A01K 67/02 (2006.01) A61D 19/02 (2006.01) A61K 31/201 (2006.01) A61K 38/09 (2006.01) A61P 15/08 (2006.01)

Patent

CA 2540838

A method for synchronizing ovulation in sows and gilts by a single injection of hormones is disclosed. A hormone, gonadotropin releasing hormone (GnRH), luteinizing hormone (LH), follicle stimulating hormone (FSH), human chorionic gonadotropin (hCG), analogues, derivatives, agonists or combinations thereof is administered to an open sow post weaning at a specific time to stimulate ovulation of mature responsive follicles. The sow is then bred, without heat detection, at a specific subsequent timed interval after injection with hormone, with one or two artificial or natural breedings. In gilts, the hormone is injected at a timed interval from onset of estrus or at a specific timed interval following Prostaglandin F2a for those gilts which have been held in a state of pseudopregnancy.

L'invention concerne un procédé de synchronisation de l'ovulation chez des truies et des jeunes truies par une seule injection d'hormones. Une hormone, l'hormone de libération des gonadotrophines (GnRH), l'hormone lutéinisante (LH), l'hormone folliculo-stimulante (FSH), la gonadotrophine chorionique humaine (hCG), leurs analogues, leurs dérivés, leurs agonistes ou leurs combinaisons, est administrée à une truie non gestante après sevrage à un temps spécifique pour stimuler l'ovulation des follicules matures réactifs. La truie est alors élevée, sans détection des chaleurs, à un intervalle réglé spécifique ultérieur après injection de l'hormone, avec une ou deux reproductions artificielles ou naturelles. Chez les jeunes truies, l'hormone est injectée à un intervalle réglé à partir du début de l'oestrus ou à un intervalle réglé spécifique après la prostaglandine F2a pour les jeunes truies ayant été maintenues dans un état de pseudogestation.

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