Transcervical embryo recoveries in Santa Inês ewes subjected to short- or long-term superovulatory protocols.

MAIA, A. L. R. e S.; OLIVEIRA, M. E. F.; ZAMBRINI, Z. N.; SOUZA-FABJAN, J. G.; BARTLEWSKI, P. M.; GUIMARÃES, J. D.; BRANDÃO, F. Z.; FONSECA, J. F. da

Transcervical embryo recoveries in Santa Inês ewes subjected to short- or long-term superovulatory protocols.

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Descripción

This study compared short- and long-term estrus synchronization in 16 cycling Santa Inês ewes. All ewes were submitted to the two protocols in a cross?over design resulting in replicates #1 and #2 with 16 ewes, each one. Ewes were synchronized with intravaginal sponges containing 60 mg medroxyprogesterone acetate (Progespon®, Schering Plough, São Paulo, Brazil) for 6.5 (G?6.5d) or 14.5 (G?14.5d) days, followed by a superovulation (SOV) of 4 or 3 days with decreasing doses of pFSH (Folltropin®?V, Bioniche Animal Health Canada Inc., Belleville, Canada), respectively.