A genetic characterization of White Short-Haired (WSH) and Brown Short-Haired (BSH), is necessary to preserve them from extinction and to exploit their genetic variation. A study was carried out on the genetic polymorphism of the CSN2 and CSN3 loci. Genomic analysis was performed by PCR method. Both breeds were characterized by the absence of CSN2o allele. The CSN3 locus was found polymorphic, with the CSN3A, CSN3B and CSN3C alleles frequency of 0.15, 0.80 a 0.05 in WSH and 0.52, 0.40 and 0.08 in BSH, respectively.