Evaluación de un panel de snp para el control de filiación en la raza ovina Ripollesa

• J. Casellas ^[1]
  1. [1] Universitat Autònoma de Barcelona

     Universitat Autònoma de Barcelona

     Barcelona, 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. 576-578
• Idioma: español
• Títulos paralelos:
  • Evaluation of a snp panel for paternity testing in the ripollesa sheep breed
• Enlaces
  • Texto Completo Libro
• Resumen

  • Paternity testing initiatives must be viewed as key tools for animal breeding programs under multiple-sire mating systems. This is the case of the Ripollesa sheep breed where genotyping of all replacement individuals with a 60-SNP chip was implemented since 2011. Despite the discriminant power for this custom panel must be greater than 99.9%, its performance could be highly dependant on the correct identification of potential sires for each individual. A total of 4,068 animals have been genotyped and paternity was checked for all of them. When candidate sires were previously identified on the basis of their flock of origin and age, sire was identified for 52.4% of individuals born before 2011 and 91.4% of individuals born between 2011 and 2014; note that most of the rams that sired older individuals were already culled from the flock when blood collection was performed. If analyses restricted to genotyping data, success in sire identification fell up to 9.3%. Within this context, this results highlighted both the usefulness of genotyping programs for paternity identification in small ruminant species and the key role of non-genetic information suck as flock of origin and age of rams for optimizing success of paternity tests.