Table 1. Effect of supplementation on production of short chain fatty acids (SCFA) in 2 sample types (rumen or feces) obtained from beef calves.

	Non-Supplemented		Supplemented		P-value1
SCFA (mM)	Rumen	Feces	Rumen	Feces	Supplement	Sample Type	Interaction
Acetate	63.17	25.11	67.59	33.47	0.13	< 0.001	0.63
Propionate	10.51	4.04	11.66	5.69	0.05	< 0.001	0.71
Butyrate	6.29	0.77	7.90	1.64	0.04	< 0.001	0.51
Isobutyrate	0.66	0.60	0.60	0.52	0.24	0.21	0.85
Valerate	0.45	0.32	0.53	0.52	0.13	0.44	0.53
Isovalerate	0.77	0.41	0.73	0.32	0.34	< 0.001	0.73
Caproate	0.30	0.08	0.40	0.00	0.96	0.01	0.43
Total SCFA	82.16	31.35	89.41	42.16	0.10	< 0.001	0.74

¹ P-values calculated for the contrast between the presence of supplement in the diet, the type of sample (rumen or feces), and their interaction.