Selección por tasa de ovulación y tamaño de camada en conejo. Respuesta correlacionada en supervivencia prenatal

• A.Y. Badawy ^[1] ; R. Peiró ^[1] ; A. Blasco ^[1] ; M.A. Santacreu ^[1]
  1. [1] Universidad Politécnica de Valencia

     Universidad Politécnica de Valencia

     Valencia, España

     
• Localización: XVI Jornadas sobre Producción Animal: 19 y 20 de mayo de 2015, Zaragoza / Javier Álvarez Rodríguez (aut.), Begoña Panea Doblado (aut.), Jorge Hugo Calvo Lacosta (aut.), Mireia Blanco Alibés (aut.), José Alfonso Abecia Martínez (aut.), Daniel Villalba Mata (aut.), María Ángeles Latorre Górriz (aut.), Vol. 2, 2015, ISBN 978-84-606-7969-1, págs. 549-551
• Idioma: español
• Títulos paralelos:
  • Election for ovulation rate and litter size in rabbits. Correlated response on prenatal survival
• Enlaces
  • Texto Completo Libro
• Resumen

  • Two-stage selection for ovulation rate (OR) and litter size (LS) was performed during 10 generations using a rabbit line previously selected during 6 generations by OR. In both periods, ovulation rate was estimated at d 12 of gestation by laparoscopy. Selection for litter size was based on the average litter size over the first two parities. Total selection pressure in females was about 30% in both periods. Data from 1275 females were analyzed. After 6 generations of selection for ovulation rate, it increased around 1.6 ova but the correlated response on LS was low (0.5 kits). However, after 10 generations of selection by the index, OR and LS increased around 2 ova and kits, respectively. Correlated response on prenatal survival was observed (+7.7%) mainly due to an increase in embryo survival (+3.5%)