Table 3.

Dry matter intake (DMI) and fatty acid (FA) intake of cows fed stearic acid (SA) and oleic acid (OA) dietary treatments in low and high rumen-active unsaturated fatty acids (RUFA) experiments

Intake, kg/d	LRUFA experiment1						HRUFA experiment1
	Treatment2		SEM	P-value			Treatment2		SEM	P-value
	SA	OA		Trt	Wk	Trt × Wk	SA	OA		Trt	Wk	Trt × Wk
DMI	29.0	26.6	0.60	<0.01	<0.01	0.11	29.8	28.4	0.52	0.03	<0.001	0.77
C16:0	0.22	0.24	0.005	0.15	<0.001	0.11	0.39	0.41	0.008	0.12	<0.001	0.82
C18:0	0.16	0.03	0.002	<0.001	<0.001	0.21	0.21	0.07	0.003	<0.001	<0.001	0.23
cis-9 C18:1	0.10	0.17	0.003	<0.001	<0.001	0.17	0.25	0.34	0.006	<0.001	<0.001	0.88
cis-9, cis-12 C18:2	0.22	0.22	0.004	0.37	<0.001	0.10	0.42	0.4	0.008	0.16	<0.001	0.71
cis-9, cis-12, cis-15 C18:3	0.06	0.05	0.001	<0.001	<0.001	0.34	0.06	0.05	0.001	<0.001	<0.001	0.49
Unsaturated FA3	0.39	0.46	0.008	<0.001	<0.001	0.15	0.74	0.85	0.016	<0.001	<0.001	0.87
Total FA	0.80	0.72	0.015	<0.001	<0.001	0.12	1.42	1.39	0.029	0.35	<0.001	0.73

¹LRUFA represents the diets contain low content of RUFA; HAUFA represents the diets contain high content of RUFA.

²SA dietary treatment contained approximately 0.4% more C18:0 than OA dietary treatment on DM basis; OA dietary treatment contained approximately 0.3% more C18:1 cis-9 than SA dietary treatment on DM basis.

³Includes cis-9 C18:1, cis-9, cis-12 C18:2, and cis-9, cis-12, cis-15 C18:3.