Following-up on previous studies that investigated genetic relationshipsamong several world-wide cattle breeds using genome-wide SNP data, wefocus here on the central and western part of the Mediterranean. Notably, 50K genotypes from 30 Marismeña (Spain); 24 Guelmoise (Algeria); 46Brune de l’Atlas Fauve, 15 Brune de l’Atlas Grise, and 15 Blonde du Cap(Tunisia); 29 Modicana and 30 Cinisara (Sicily); 24 Podolica Italiana(Southern continental Italy); 34 Chianina and 24 Romagnola (CentralItaly); 23 Modenese, 24 Reggiana, 23 Alpine Grey and 50 Pezzata RossaItaliana (Northern Italy); 50 Bruna Italiana and 50 Frisona Italiana wereconsidered. When included in a world-wide dataset, the three Tunisian, theAlgerian, the two Sicilian, the Podolica, the Chianina and the Romagnolawere the taurine breeds showing the highest closeness to the Indian zebugroup in the MDS plot of the IBS distance. These results were alsoconfirmed by ADMIXTURE analysis (K = 2). This relatively lower influenceof zebu material into cattle breeds from Northern Italy suggests a majormaritime-mediated route of dispersal of zebu material into SouthernEurope and Northern Africa. Interestingly, breeds from the Iberianpeninsula showed lower evidence of zebu introgression, suggesting thatzebu introgression was likely not mediated by Moors, and possibly occurredat earlier times. Clear evidence of more recent introgression of materialfrom improved dairy cattle breeds (Bruna Italiana and Brown Swiss) intothe two Brune de l’Atlas populations from Tunisia highlights the need forurgent conservation of this cross-border cattle.
|Numero di pagine||1|
|Stato di pubblicazione||Published - 2017|