Efecto de un protocolo de prostaglandina a corto plazo sobre la sincronización y resultados reproductivos en las cabras cíclicas

Raymundo Rivas-Muñoz, Santiago Zúñiga-García, Gerardo Arellano-Rodríguez, Fernando Arellano-Rodríguez, Leticia Gaytán-Alemán, Viridiana Contreras-Villarreal

Resumen

El objetivo del presente estudio fue evaluar la respuesta reproductiva de cabras cíclicas del norte de México (26ºN) sometidas a dos protocolos de administración de prostaglandinas (PG; 5 días vs 10 días) con el fin de sincronizar la respuesta estral. Se formaron 2 grupos de hembras caprinas adultas cíclicas de la raza Alpino francés. Al Grupo G5 (n=10), se les administró la primera inyección de PG (0.2 ml; 160 μg cloprostenol) el d -5 y el grupo G10 (n=10) recibió la primera inyección de PG el d -10. Ambos grupos recibieron la segunda inyección de PG el d 0 (noviembre 1). La respuesta reproductiva general después de la segunda inyección de PG fue similar (P>0.05) entre ambos tratamientos. Respuesta estral = 60% para ambos grupos, latencia al estro = 68h vs 52h, ovulación = 80% vs 60% (G5 vs G10, respectivamente; P>0.05). Debido a que no hubo diferencias entre grupos, la administración del tratamiento G5 parece ser una alternativa interesante para la utilización de un protocolo corto ya que generó una respuesta reproductiva importante.

Palabras clave

Cabras Alpino Francés; época reproductiva; sincronización estral; prostaglandinas; respuesta reproductiva

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