Basal Diet

Parameterization

Supplementation

Intake (%control)

Correlates with

N Status (%control)

Source

Hay

Semi-purified, urea as N source

Silage

Silage

Starch sprayed onto Forage

Casein infusion

Feeding protected Casein

Fresh versus Ensiled

111^b

237

158^b

123

267^a,c

280^c

400^a,c

127^a,d

[7]

[8]

[9]

[1] [2]