Thirty-two lactating, multiparous Holstein-Friesian
cows, each producing 16.3 ± 1.83 L of milk/d (average
± SD) with 582 ± 54.2 kg of BW and 203 ± 72.8
DIM were allocated to 3 groups balanced for mean
milk yield, BW, and yields of fat and protein according
to the method