Resumen

CABRERA, Pedro et al. Efect of the number of embryos per straw on the post-vitrification morphological viability of murine embryos obtained in vivo. Agronomía Trop. [online]. 2006, vol.56, n.4, pp.489-493. ISSN 0002-192X.

The technique of cryopreservation of embryos by vitrification has acquiredgreat relevance world-wide because of the easiness of the process, the low costof the equipment and the high levels of viability of the embryos after vitrification.To determine the effect of the number of embryos per straw on the morphologicalappearance, we used four different numbers of embryos per straw: 1, 2, 4 and6, obtaining no effects (P>0.05) of the number of embryos on the rate of embryorecovery after vitrification, or on the rate of normal embryos. However, thebest results were shown when 4 embryos per straw were used.

Palabras clave : Embryo; murine; vitrification.