Extrudates from wheat, rye and tricitale bran were prepared in a single-screw extruder. Fibre preparations obtained in this way were milled and added in the amount of 5 and 10 % of wheat flour used for baking. The effect of these supplements on the quality of obtained breads and texture parameters of crumb during the ageing process was demonstrated. With respect to bread volume and organoleptic evaluation of breads the most beneficial proved to be a 5 % supplement of extruded triticale bran with crude fibre below 4%. In spite of maintaing good quality the crumb of all breads supplemented with extruded bran, hardened to much higher degree than the standard one, irrespective of the kind of extrudate used. For practical application a maximum 5 % supplement of extruded bran for wheat bread baking is recommended.