Table 4.

Feed intake, fecal output, fecal score, fecal pH, urine pH, and apparent total tract macronutrient and energy digestibility

	Canola oil					P-value
Item	0%	2%	4%	6%	SEM	Treatment	Linear	Quadratic	Cubic
Intake
Feed intake (as fed), g/d	547.50a	479.33b	440.70b,c	388.23c	28.54	0.001	<0.001	0.726	0.666
Feed intake, g DM/d	121.54	119.35	109.73	103.66	6.89	0.097	0.017	0.721	0.653
GE intake, kcal/d	737.54	759.28	712.02	695.03	43.73	0.566	0.263	0.574	0.520
Output
Fecal output, g as-is/d	60.38a	52.78a,b	43.25b,c	35.53c	6.33	0.002	<0.001	0.987	0.833
Fecal output, g DM/d	19.89a	18.08a,b	14.81b,c	13.55c	1.78	0.004	<0.001	0.812	0.513
Fecal score1	2.42	2.48	2.33	2.30	0.10	0.429	0.192	0.589	0.393
Fecal pH	6.83	6.93	6.93	6.80	0.10	0.629	0.846	0.206	0.915
Urine pH	7.00	ND	ND	7.25	0.35	0.194	ND	ND	ND
Apparent digestibility
DM, %	83.61c	84.69b,c	86.55a,b	87.62a	1.05	0.021	0.002	0.998	0.694
OM, %	88.48c	89.35b,c	90.50a	91.40a	0.76	0.019	0.002	0.983	0.852
CP, %	89.73	89.38	89.93	90.22	0.99	0.891	0.567	0.691	0.741
Fat, %	95.57c	96.02b,c	96.84a,b	97.62a	0.43	0.001	<0.001	0.613	0.788
GE, %	90.53c	91.43b,c	95.01a	93.35a,b	0.79	0.003	0.003	0.118	0.036

¹ Fecal score determined with the use of the Waltham Faeces Scoring System.

^a-c Means within a row lacking a common superscript letter are different (P < 0.05).