Table 1.

Concentrations of acetate, propionate and butyrate in the faecal samples of the three different breeds of pigs.

Item	CH	YS	TB	P value
Acetate (μmol g−1)	28.69 ± 7.64a	42.03 ± 12.46b	27.55 ± 3.67a	0.002
Propionate (μmol g−1)*	11.38 ± 3.00b	14.33 ± 1.22c	8.40 ± 1.72a	0.001
Butyrate (μmol g−1)	6.57 ± 2.65ab	8.77 ± 1.79b	4.47 ± 0.79a	0.005

The rest of the data are not normally distributed and presented as median ± interquartile range (IQR). Different alphabetical (a, b, c, ab) superscripts mean significant difference (P < 0.05).

^*Means the normally distributed data which are presented as means ± standard deviation (SD).