Table 2: Mean copper and zinc contents of the different feed components (mg/kg DM).

CuZn

Grass silage (n = 10)8.2 ± 1.434.0 ± 5.9
Maize silage (n = 10)4.8 ± 0.523.7 ± 2.6
Concentrate A (n = 9)18.2 ± 0.5105.5 ± 2.9
Concentrate B (n = 9)47.3 ± 1.4243.3 ± 7.1
Total ration A (n = 9)11.1 ± 1.661.9 ± 17.0
Total ration B (n = 9)22.6 ± 4.9113.0 ± 30.0