SummaryBiochemical polymorphisms (haemoglobin, serum transferrin, serum albumin, serum amylase, red cell phosphohexose isomerase, red cell carbonic anhydrase, ceruloplasmin and aryl esterase) of 224 Hungarian Native female goats and 21 imported male goats (German Improved, Saanen, Nubian, Slovakian White) have been studied.On the basis of the observed gene frequency values these polymorphic traits cannot be used efficiently in parentage control work or in correlation studies. There was no apparent association between the haemoglobin and transferrin type of the females and their reproductive performance.