02258naa a2200349 a 450000100080000000500110000800800410001910000270006024500760008726000090016350001110017252011010028365000280138465000160141265000150142865000140144365000290145765300260148665300300151265300360154265300200157865300390159865300380163770000200167570000250169570000190172070000180173970000230175770000170178070000200179777300910181720015392017-05-29       2014    bl uuuu     u00u1 u    #d1 aFERNANDES, C. A. de C.  aHormonal protocols for in vitro production of zebu and taurine embryos.  c2014  aTítulo em português: Protocolos hormonais para produção in vitro de embriões de zebuínos e taurinos.  aThe objective of this work was to evaluate the effects of hormonal synchronization protocols, associated or not with follicular development stimulation, on the recovery of oocytes and on in vitro production of Bos indicus and B. taurus embryos, in different seasons. Ultrasound?guided follicular aspirations (n=237) were performed without pre?treatment (G1, control group) and after follicular wave synchronization (G2), or after follicular wave synchronization and follicle growth induction (G3). Bos indicus produced more oocytes and embryos than B. taurus (18.7±0.9 vs. 11.9±0.6 oocytes and 4.8±0.3 vs. 2.1±0.2 embryos). On average, oocyte and embryo yields were higher in G3 than in G2, and both were greater than in G1, which lead to a higher conversion of oocytes to embryos in these treatments. The hot or the cold season did not affect the B. indicus outcomes, whereas, in B. taurus, both oocyte recovery and embryo production were higher in the cold season. Follicular wave synchronization improves ovum pick?up and in vitro production of embryos in both cattle subspecies evaluated.  aartificial insemination  aBos Indicus  aBos Taurus  aGado zebu  aInseminação artificial  aEstimulação com FSH  aFollicle growth induction  aFollicular wave synchronization  aFSH stimulation  aIndução de crescimento folicular  aSincronização da onda folicular1 aMIYAUCHI, T. M.1 aFIGUEIREDO, A. S. de1 aPALHÃO, M. P.1 aVARAGO, F. C.1 aNOGUEIRA, E. S. C.1 aNEVES, J. P.1 aMIYAUCHI, T. A.  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 49, n. 10, p. 813-817, out. 2014.