[en] In ruminant embryo transfer development, the limiting step remains the superovulation of the donor: using both PMSG and pituitary extracts, the superovulatory response is variable. In our research unit, FSH and LH were purified until homogeneity. Superovulatory treatment includes the administration of pure FSH the day following the preovulatory LH pulse and an administration of an LH/FSH mixture in the middle cycle. This biphasic of folliculogenesis allows superovulatroy response with more and higher embryos. [fr] Parmi les étapes conduisant à la transplantation embryonnaire, celle de la superovulation n'est pas complètement maîtrisée: la réponse au traitement, qu'il s'agisse de PMSG ou d'extrait pituitaire, reste imprévisible. L'utilisation d'un extrait hypophysaire hautement purifié et son administration en deux temps, à savoir le produit pur et à faible dose immédiatement après le pic préovulatoire de la FSH/LH puis l'administration d'une préparation LH/FSH dans un rapport 20 ou 40 % en phase lutéale, a pour résultat non seulement d'augmenter le nombre d'embryons récoltés mais surtout d'augmenter la proportion d'embryons de bonne qualité et transférables.
Research Center/Unit :
Laboratoire d'Endocrinologie et de Physiologie de la Reproduction animale
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Beckers, Jean-François ; Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie de la reproduction
Language :
French
Title :
Folliculogenèse et transplantation embryonnaire chez les ruminants
Alternative titles :
[en] Folliculogenesis and embryo transfer in ruminants
Publication date :
1989
Journal title :
Bulletin et Mémoires de l'Académie Royale de Médecine de Belgique
ISSN :
0377-8231
Publisher :
Académie Royale de Médecine de Belgique, Bruxelles, Belgium
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