Research Article

Thyroid Hormones Concentrations during the Mid-Dry Period: An Early Indicator of Fatty Liver in Holstein-Friesian Dairy Cows

Table 2

Chemical composition of cow’s diets.

Days related to calving
Chemical composition−60 to −14 days−14 to 0 days 0 to +60 days

DM kg12.359.8223.63
Net energy of lactation (NEL) MJ72.8665.50163.03
Crude protein (CP) %12.515.0316.05
Rumen undegradable protein (RUP) %
Crude fat %2.603.824.78
Acid detergent fibre (ADF) %32.1925.3122.08
Neutral detergent fibre (NDF) %49.5340.5935.48
Ca %0.730.640.90
P %0.440.420.52
Na %
Cl %0.300.170.29
Mg %0.310.270.34
K %1.421.301.18
S %
Mn ppm111.56129.3682.40
Cu ppm33.2339.8125.64
Zn ppm132.27168.2496.90
Co ppm0.781.030.54
J ppm2.443.061.64
Fe ppm221.67228.38220.53
Se ppm0.891.140.70
Vit A IU/kg21 487.2641 234.2821 273.58
Vit D IU/kg1 574.054 487.103 445.30
Vit E Iu/kg83.31117.7969.35