Microbial and metabolomic mechanisms mediating the effects of dietary inulin and cellulose supplementation on porcine oocyte and uterine development

Table 7 Effects of DF intake level on the concentrations (μmol/g) of short-chain fatty acids in faeces and colon chyme of gilts

Items	Treatments				P-value
Items	1.0 DF	1.5 DF	1.75 DF	2.0 DF	Linear	Quadratic
¹Faeces at 30 d of experiment
Acetate	40.1 ± 2.6^b	41.5 ± 2.9^b	47.6 ± 1.7^ab	51.4 ± 2.7^a	0.002	0.231
Propionate	14.2 ± 1.6^b	15.5 ± 1.4^ab	19.2 ± 0.8^a	19.4 ± 1.1^a	0.003	0.709
Butyrate	8.4 ± 0.8	9.8 ± 1.2	11.4 ± 1.1	12.1 ± 0.7	0.010	0.843
²Chyme in colon at 19 d of the 2nd oestrous cycle
Acetate	58.9 ± 2.9	56.8 ± 4.8	63.7 ± 3.0	62.6 ± 3.0	0.324	0.604
Propionate	25.8 ± 1.1	24.8 ± 1.9	29.8 ± 1.2	31.8 ± 3.5	0.046	0.218
Butyrate	11.6 ± 0.4^b	12.5 ± 1.3^ab	13.1 ± 0.8^ab	15.4 ± 1.0^a	0.012	0.263

Faeces tested at 30 d of the experiment, n = 8; Chyme colon data, n = 6; Data are expressed as means ± S.E.; DF, dietary fiber; Means with different letters ^a,b denote P < 0.05

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