Recuperación y transferencia de embriones de vacas Holstein de élite con infecciones uterinas recurrentes

ABSTRACT: Six high quality Holstein cows (average of 6049 kg/305 days milk yield; 9.6 years old with 7.8 calving; 13.2 months of calving interval; and 1.9 breeds/conception) presented recurrent uterine infections with 340.5 open days after calving. After the last successful uterine treatment cows were induced to superovulation with constant FSH doses (days 11-14 of cycle), PGF2α day 13 (AM:PM) with AI (AM:PM) and GnRH treatment (AM) at the PGF2α-induced estrus. Eight days after AI cows were flushed and embryos recovered, classified and transferred to Holstein or cross-breed (F1) Brahman heifers synchronized with the donor. The average recovery rate was 10.3 embryos/flushing, with 39.4% non-fertilized oocytes, 30.3% attached and embryo quality significantly correlates with implantation rate (p <0.05). The age of the cows was significantly associated with embryo-recovering rate (p < 0.05). These results showed that progeny from high-quality dairy cows with recurrent uterine infections can be recovered by embryo transfer.

• Autores: Rodríguez, L; Giraldo Restrepo, María Lucía; Vélez Restrepo, María Paulina; Maldonado Estrada, Juan Guillermo
• Tipo de recurso: Article of investigation
• Fecha de publicación: 1998
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/7184
• Acceso en línea: http://hdl.handle.net/10495/7184
• Palabra clave: Bos taurus; Embriones; Transferencia de embriones
• Rights: openAccess
• License: Atribución-NoComercial-CompartirIgual 2.5 Colombia (CC BY-NC-SA 2.5 CO)