ort
The DM concentration of barley silage
was determined, by drying samples in a forced-air oven
at 55°C for 48 h, twice weekly, and as-fed proportions
of feed ingredients were adjusted if necessary. Cows
were weighed after the morning milking but before the
feeding on 2 consecutive days immediately before the
start of the experiment. Cows were milked twice daily
at 0400 and 1500 h. Milk was sampled from both a.m.
and p.m. milkings on d 18, 19, and 20 of each period
of the study.