Table 5.

Concentration (μg/g) and frequency of detection (% samples) of fecal fatty acids (FAs) at day 0 (T1) and 120 (T2). The p-values are related to the concentration de the FAs at both sampling times.

Fatty acid	T1		T2		p-values
	Concentration	% samples	Concentration	% samples
SCFAs
Acetic	3272.01 ± 2760.79	100	3100.50 ± 1848.35	100	0.551
Propionic	1146.10 ± 926.92	93	946.31 ± 669.98	100	0.972
Isobutyric	249.60 ± 148.62	57	173.06 ± 160.12	57
Butyric	851.30 ± 1169.79	93	576.03 ± 733.90	71	0.646
Acetic/propionic ratio	3.19 ± 1.04		3.96 ± 1.57		0.382
Total	5126.74 ± 4715.54	100	4458.26 ± 3043.43	100	0.875
BCFAs	647.80 ± 525.95	93	459.92 ± 478.57	100
Isovaleric	494.20 ± 360.17	93	388.80 ± 329.07	93	0.388
Isobutyric	249.60 ± 148.62	57	173.06 ± 160.12	57	0.173
MCFAs	283.67 ± 313.72		111.02 ± 121.66
Caproic	283.67 ± 313.72	21	111.02 ± 121.66	36	0.593
Total FAs	6022.21 ± 5462.42	100	5101.11 ± 3705.72	100	0.925