El vacuno criollo en el Perú cuenta con una población muy heterogénea en morfotipos, con adaptaciones a diversos ecosistemas (resistencia a enfermedades, altitud, rusticidad, sobriedad) y con alto valor potencial como fuente de genes útiles, esto conlleva a una situación preocupante por ser un recurso amenazado por ausencia de planes de conservación y cruzamientos indiscriminados con otras razas; por lo tanto, urge la necesidad de implementar biotecnologías reproductivas orientadas a la criopreservación. El estudio tuvo como objetivo comparar la viabilidad post descongelación de ovocitos de vacunos criollos obtenidos de tres diferentes diámetros foliculares procedentes del Matadero “Quicapata”. Los vacunos criollos fueron seleccionados por morfología antes mortem. Los ovarios fueron transportados en solución salina fisiológica (0.9%) temperada, los parámetros foliculare...

The present study evaluated the ovarian and embryonic response of two hormonal superovulation protocols in high Andean Brown Swiss cattle. Four donor cows were used using an interrupted time series design with switched replications where each cow was subjected to two hormonal superstimulation protocols: protocol 1 (Prot.1, conventional FSH of 400mg in decreasing doses for four days) and protocol 2 (Prot. 2, eCG, 2500IU in a single dose). During the implementation of the protocols, the ovarian evaluation of the preovulatory follicles (POF) and the corpora lutea (CLs) was carried out by ultrasound. Likewise, the quality and rate of recovered embryos were evaluated. The results showed that the number and diameter of FPO and CLs did not show significant differences between the protocols, in the same way the number of embryos collected. With this, it is concluded that both superovulation prot...

The present study evaluated the ovarian and embryonic response of two hormonal superovulation protocols in high Andean Brown Swiss cattle. Four donor cows were used using an interrupted time series design with switched replications where each cow was subjected to two hormonal superstimulation protocols: protocol 1 (Prot.1, conventional FSH of 400mg in decreasing doses for four days) and protocol 2 (Prot. 2, eCG, 2500IU in a single dose). During the implementation of the protocols, the ovarian evaluation of the preovulatory follicles (POF) and the corpora lutea (CLs) was carried out by ultrasound. Likewise, the quality and rate of recovered embryos were evaluated. The results showed that the number and diameter of FPO and CLs did not show significant differences between the protocols, in the same way the number of embryos collected. With this, it is concluded that both superovulation prot...