1. Center for Research in Agricultural Genomics (CRAG); UAB 08193 Bellaterra Spain
2. Department of Animal Science and Food; Faculty of Veterinary; Universitat Autonoma de Barcelona; 08193 Bellaterra Spain
3. Institut Català de Recerca i Estudis Avancats (ICREA); Passeig Lluís Companys 23 08010 Barcelona Spain