Table 5.

pH values, ammonia and short-chain fatty acids concentrations after 24 h of an in vitro incubation of canine fecal inoculum supplemented with microalgae ¹.

Item	CTRL	AP	HP	PT	CV	Pooled SEM	Anova p-Value
pH	5.84	5.84	5.81	5.95	5.81	0.01	0.004
Ammonia, mmol/L	39.6	39.9	36.0	38.0	35.7	1.29	0.065
Straight-chain SCFA, mmol/L
Acetate	16.7	16.9	16.6	16.5	16.5	0.48	0.960
Propionate	9.68	10.5	10.3	11.7 *	10.7	0.28	0.001
Butyrate	5.43	5.73	5.31	5.65	5.61	0.14	0.271
Total SCFA	31.8	33.1	32.2	33.8	32.8	0.89	0.536
BCFA, mmol/L
Isobutyrate	0.60	0.64	0.60	0.64	0.62	0.02	0.289
Isovalerate	0.92	0.95	0.90	1.01 *	0.94	0.02	0.041
Total BCFA	1.52	1.59	1.50	1.65	1.56	0.04	0.086
Individual SCFA proportions, %
Acetate	48.7	47.3 *	47.9 *	45.2 *	46.7 *	0.20	<0.001
Propionate	28.3	29.4 *	29.7 *	32.2 *	30.2 *	0.09	<0.001
Butyrate	15.9	16.0	15.4 *	15.6	15.9	0.10	0.001
Isobutyrate	1.76	1.80	1.74	1.76	1.75	0.01	0.041
Isovalerate	2.68	2.66	2.59	2.78	2.65	0.05	0.254

¹ Values are the means of five bottles per treatment. * Significantly different from CTRL, p < 0.05. CTRL, control; AP, Arthrospira platensis; HP, Haematococcus pluvialis; PT, Phaeodactylum tricornutum; CV, Chlorella vulgaris; SCFA, short-chain fatty acid; BCFA, branched-chain fatty acid.