Efecto de la línea genética del macho sobre la actividad alanina aminopeptidasa del plasma seminal de conejo

• M.P. Viudes de Castro ^[1] ; E. Mocé ^[1]
  1. [1] CITA-IVIA
• Localización: XV Jornadas sobre Producción Animal: 14 y 15 de mayo de 2013, Zaragoza / Jorge Hugo Calvo Lacosta (aut.), Isabel Casasús Pueyo (aut.), Margalida Joy Torrens (aut.), Javier Álvarez Rodríguez (aut.), Luis Varona Aguado (aut.), Begoña Panea Doblado (aut.), Carlos Calvete Margolles (aut.), Joaquín Balcells Teres (aut.), Vol. 1, 2013, ISBN 978-84-695-7684-7, págs. 428-430
• Idioma: español
• Títulos paralelos:
  • Effect of the genetic line on the alanine aminopeptidase activity in rabbit seminal plasma
• Enlaces
  • Texto Completo Libro  1 (pdf)   2 (pdf) 
• Resumen

  • In rabbits, artificial insemination requires an effective control of ovulation, The most frequent method used for ovulation induction in rabbits artificially inseminated is the intramuscular administration of GnRH, but there are clear breeding advantages using the GnRH analogue on seminal dose. In this respect, several authors reported the possibility of ovulation induction after supplementation of semen extender with a GnRH synthetic analogue. Therefore, the concentration of GnRH analogue needed when it is included in the extender is much higher than that used intramuscularly. On the other hand, seminal plasma from several species has an important aminopeptidase activity, and this proteolitic activity could alter the effective concentration of GnRH analogue available to be absorbed via vaginal mucosa. The aim of this study was to evaluate de effect of the genetic line on the alanine aminopeptidase activity in the seminal plasma of male rabbits. Results showed that A line, selected for maternal characteristics, showed a significantly lower aminopeptidase activity than R line, selected for growth rate from weaning to slaughter. This result suggests that the genetic line of the male could determine the concentration of GnRH analogues needed in supplemented extenders to obtain similar reproductive performance than that obtained after intramuscular administration.