To obtain the Cartesian data in Figure 1 of Chilliard
et al. (2009), the relevant subfigures were electronically
scanned and the data digitally extracted by means of
UN-SCAN-IT software (version 5.0; Silk Scientific Inc.,
Orem, UT).
RESULTS
Diets and Feed Intake
Nutritive characteristics of the main ingredients in
the diets are shown in Table 1. Cows offered each diet
had similar total DMI (Table 2). One cow in the EGM
group consistently ate less than 60% of the feed offered
to her, so her data was excluded from all analyses.
Based on the recorded intake of individual dietary
ingredients and the concentration of CP in each, the
average concentrations of CP in the diets consumed by
cows in each treatment group were 159 g/kg of DM for
the CON diet, 150 g/kg of DM for the DGM diet, and
150 g/kg of DM for the EGM diet. The average concentrations
of crude fat in diets consumed were similarly
calculated as 26 g/kg of DM for the CON diet, 57 g/kg
of DM for the DGM diet, and 52 g/kg of DM for the
EGM diet.