Identidad genómica y análisis factorial discriminante en vacuno de carne

JUAN ALTARRIBA; ALDEMAR GONZÁLEZ-RODRÍGUEZ; ELENA F. MOURESAN; SEBASTIÁN MUNILLA; ANTONIO MOLINA; CARLOS MORENO; CLARA J. DÍAZ; JESÚS PIEDRAFITA; LUIS VARONA

Bellaterra (Barcelona)

Congreso; XVII Reunión Nacional de Mejora Genética Animal; 2014

Centre de Recerca en Agrigenòmica

Five Spanish autochthonous beef cattle breeds: Asturiana de los Valles, Avileña-Negra Ibérica, Bruna de los Pirineos, Pirenaica and Retinta, were sampled. The 246 animals obtained were genotyped with the Illumina HD 777K chip and the genotypic information was subjected to a factorial discriminant analysis (fda), yielding the following conclusions: a) each autosomal chromosome has the discriminant ability to differentiate populations even with a smaller number of consecutive markers (1,000), b) in a sample of 50 individuals / breed it is possible to classify 95% of the individuals with only three SNPs and fully differentiate the five breeds using just 16 SNPs, identifying the most differentiated chromosomal regions (discriminant footprints) among breeds, and c) 25 animals / breed allow to classify correctly 97% of the individuals with unknown breed.