In the presented research on total 95 gilts, which were fed the same mixed meals and were slaughtered at the same body weight, the influence of breed: Polish Large White, Polish Landrace, Line-990, Pietrain and Duroc on mineral content in MLD was estimated. There was no significant effect of pigs' breeds on Ca and Na contents. The highest level of Fe was tested in MLD of Pietrain, together with the lowest content of Mg (p < 0.01). The highest level of K (p < 0.01) and the lowest of Zn (p < 0.05) were observed in MLD of Polish Landrace. There were not significant relationships between mineral level in MLD (except Mn) and selection traits: daily body gain and leanness.