Table 4.

Apparent digestibilities of Smooth Bromegrass hay, %

Treatment1	DM	OM	NDF	ADF
Control	46.30	46.26	44.78	45.47
LOW	43.85	43.85	42.16	43.88
MED	48.28	48.37	47.19	47.80
HI	45.51	45.37	43.62	44.45
SEM	2.36	2.45	2.94	3.04
P-value2	0.41	0.44	0.44	0.62

¹Horses in the control group were administered 800 mL of distilled water via cecal cannulae. Horses in the LOW, MED, and HI groups were administered 0.125, 0.25, and 0.5 g/kg BW sodium casein, respectively, solubilized in 800 mL distilled water, via cecal cannulae.

² P-value for overall model F-test.