Table 2.

Effects of cattle breed, Holstein or Angus, and forage inclusion on diet intake and digestibility, and nutrient digestible intake

Item, DM basis	Diet1			Breed			P 2
	0	8	16	Angus	Holstein	SEM	Diet		B	D × B
							Linear	Quad
n, animals	12	12	12	6	6
Calculated DM Intake, % of BW3	1.85	1.93	1.97	1.83	2.00	0.085	0.21	0.83	0.03	0.65
Intake, kg/d3
DM	13.06	13.55	13.76	13.04	13.87	0.453	0.24	0.78	0.09	0.63
OM	12.01	12.47	12.66	11.99	12.76	0.417	0.24	0.78	0.09	0.63
NDF	1.29	1.81	2.37	1.77	1.87	0.058	<0.01	0.83	0.12	0.19
Starch	8.32	7.89	7.26	7.59	8.06	0.270	0.01	0.73	0.11	0.69
Digestibility, %4
DM	79.1	74.2	72.5	74.8	75.7	1.03	<0.01	0.22	0.46	0.81
OM	78.6	73.8	72.3	74.4	75.4	1.11	<0.01	0.25	0.47	0.83
NDF	51.4	52.9	54.4	51.4	54.4	2.74	0.32	0.99	0.33	0.94
Starch	90.4	89.1	89.3	89.3	89.9	0.89	0.42	0.51	0.62	0.72
Digestible Intake, kg/d5
DM	10.36	10.05	9.97	9.76	10.50	0.386	0.48	0.81	0.11	0.85
OM	9.48	9.20	9.15	8.94	9.61	0.354	0.52	0.80	0.11	0.87
NDF	0.66	0.97	1.30	0.92	1.03	0.055	<0.01	0.80	0.07	0.32
Starch	7.52	7.03	6.48	6.78	7.23	0.241	0.01	0.93	0.11	0.83

¹0 = 0% forage inclusion in the diet; 8 = 8% forage inclusion in the diet; 16 =16% forage inclusion in the diet.

²Linear = Linear effect of diet; Quad = Quadratic effect of diet; B = effect of breed; D × B = interaction of diet × breed.

³Calculated as kg of nutrient consumed per day on DM basis.

⁴Calculated as g of nutrient digested per kg of total diet consumed on DM basis.

⁵Calculated as kg of nutrient digested per day on DM basis.