IGEVET   21075
INSTITUTO DE GENETICA VETERINARIA "ING. FERNANDO NOEL DULOUT"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Male Wagyu lineage Origin in crossbred steers through Y chromosome DNA
Autor/es:
ROGBERG MUÑOZ, A; RIPOLI, MV; VILLEGAS-CASTAGNASSO, EE; POSIK, DM; PERAL-GARCÍA, P; GIOVAMBATTISTA, G
Lugar:
Freising - Alemania
Reunión:
Conferencia; 5th TRACE Annual meeting and Conference "TRACE in Prectice"; 2009
Institución organizadora:
TRACE Project - FP6 - UE
Resumen:
In the context of food safety and quality, certified origin food has had great advance in the last years. The importance of this kind of labeling is because of differentiating the product and also to assure some quality and safety parameters of the food. Wagyu meat it suits to this kind of treatment, not only because of the high quality recognized by the consumer, but for its exclusive fatty acid composition of it meat. Reported data evidence that the concentration of MUFA in Wagyu cattle and it crossbreds, is higher despite the amount of IMF in the carcass (1). We demonstrate that Wagyu crossbred can be DNA assigned, by paternity and breed assignment, using autosomal microsatellites data (2). For assure that the steers slaughtered commercially were Wagyu sired, we are developing a DNA test based on microsatellites of Y chromosome. Samples of Wagyu and four other breeds (Angus, Hereford, Nelore and Creole) were taken. The breeds were chosen to represent the F1 crossbreds that are been done. DNA was extracted from hair and five reported polymorphic microsatellites (INRA057, INRA 124, INRA126, INRA189, UMN0307) were genotyped (3, 4). We found 2 to 4 alleles in the studied markers and one of the haplotypes is exclusive of Wagyu breed. We are validating the test over more than 100 steers supposed to be Wagyu sired.