Research Article
Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows
Table 2
Mean copper and zinc contents of the different feed components (mg/kg DM).
| | Cu | Zn |
| Grass silage ( = 10) | 8.2 ± 1.4 | 34.0 ± 5.9 | Maize silage ( = 10) | 4.8 ± 0.5 | 23.7 ± 2.6 | Concentrate A ( = 9) | 18.2 ± 0.5 | 105.5 ± 2.9 | Concentrate B ( = 9) | 47.3 ± 1.4 | 243.3 ± 7.1 | Total ration A ( = 9) | 11.1 ± 1.6 | 61.9 ± 17.0 | Total ration B ( = 9) | 22.6 ± 4.9 | 113.0 ± 30.0 |
|
|