Fourteen dairy calves, four months of age were allocated in two treatments: control and supplemented with 0,4 ppm of Cr in the basal diet, which had 52% of grass hay and 48% of concentrate (corn meal and extruded soybeans) during 98 days. Feed intake was measured daily. In the last week were performed a glucose tolerance test. Performance were not affected by treatment (liveweight gain 1.330 and 1.320 kg/d; feed efficiency 0.24 and 0.25 and feed conversion, 4.13 and 4.07 for control and treated groups respectively). Chromium tended to decrease the blood glucose, but there were no statistical differences.
glucose tolerance; minerals; weight gain; feed efficiency
