First transfers in Cuba of imported frozen embryos (IVF-TETF)

• DOI: https://doi.org/10.22533/at.ed.813432421034

• Palavras-chave: Transferencias directas, cuerpos lúteos, descongelación de embriones, tiempo fijo.

• Keywords: Direct transfers, corpora lutea, embryo thawing, fixed time.

• Abstract:

  A total of 830 cows of the Zebu breed were reviewed in the provinces of Camagüey and Santiago de Cuba, of which 646 were synchronized by the method of the Bovine Intravaginal Device (D.I.B.), for Fixed-Time Embryo Transfer (T.E.T.F.). Ultrasound was used both for its selection and to evaluate the corpora lutea. The transfers of the 407 imported frozen embryos of the Brangus breed were carried out using the direct transfer system, similar to the thawing of semen in straws, with baths at 37 ºC. The pregnancy diagnosis was made after 30 days post Transfers with ultrasonography, resulting in 127 Pregnant women, which represents 31.2%, despite all the difficulties that arose and it being the first time that a work was carried out in Cuba. of this magnitude with frozen IVF embryos, transferred by direct transfer and to recipients at a fixed time, outside the reproductive season. The results can be considered acceptable.