Figure 1.
Figure 1.

Changes in the milk lactose concentrations (%) of lactating cows fed diets with alfalfa hay (AH), corn stover (CS), or rice straw (RS) as the main forage source. The x-axis represents the weeks during the feeding experiment. The first 2 wk (−2 to −1) was considered the dietary adaptation feeding period. *During the indicated week, the lactose concentrations in the cows fed the RS diet were similar to those in the CS-fed cows (P > 0.05). The other weeks without symbols were different in the comparisons for CS vs. RS (P < 0.05). Across the sampling weeks, the lactose concentrations were similar in AH vs. CS (P > 0.05) but were different for AH vs. RS (P < 0.05).

 


Figure 2.
Figure 2.

Changes in the arterial and venous glucose concentrations of lactating cows fed diets with alfalfa hay (AH), corn stover (CS), or rice straw (RS) as the main forage source throughout an entire day (starting at 0 h).