Table 3.

Effects of oils added to the diet RUSITEC fermenters on fermentation kinetics of starch and cellulose in batch cultures.

Item	Control (CTR)	Olive oil (OLV)	Sunflower oil (SFL)	Linseed oil (LNS)	SEM (n = 4)	P value	P value contrast CTR vs OIL
Starch
Asymptotic gas production, mL/g	311	310	301	306	17.6	0.947	0.742
Fractional fermentation rate, h−1	0.059a	0.043b	0.039b	0.039b	0.0036	0.001	<0.001
Lag time, h	4.6a	2.1b	2.2b	2.4b	0.44	<0.001	<0.001
Gas production at 24 h, mL/g	210a	191b	171c	172c	6.1	<0.001	<0.001
Average fermentation rate, mL/h	9.44a	8.62ab	7.48ab	7.50b	0.350	0.037	0.091
Cellulose
Asymptotic gas production, mL/g	352a	300ab	278b	271b	19.1	0.005	0.001
Fractional fermentation rate, h−1	0.018	0.017	0.016	0.014	0.0017	0.192	0.111
Lag time, h	9.8	13.7	16.7	15.2	2.64	0.112	0.030
Gas production at 24 h, mL/g	108a	68b	52b	49b	7.9	<0.001	<0.001
Average fermentation rate, mL/h	3.69a	2.70b	2.34b	2.11b	0.195	<0.001	<0.001

CTR = Control diet; OLV = control diet supplemented with 6% olive oil; SFL = control diet supplemented with 6% sunflower oil; LNS = control diet supplemented with 6% linseed oil.

SEM = standard error of the mean.

Contrast CTR vs OIL: comparison between CTR and all treatments supplemented with oil.

^a,bWithin a row, mean values without common superscript letters differ (P < 0.05).