Table 6.

Effect of experimental diets on the concentrations of volatile fatty acid (VFA; mg/kg) in the cecal content of broilers at 42 d of age.

Item	Acetic acid	n-Butyric acid	Propionic acid	n-Valeric acid	Iso-valeric acid	Iso-butyric acid	Total VFA†
Treatment
T1	4785	1222	1048	179	214	126	7573
T2	6009	2139	1232	228	212	135	9954
T3	5979	2032	1199	255	310	175	9567
T4	5497	1728	1155	237	256	144	9018
SEM	387.9	188.9	95.2	30.3	37	18.09	622.4
P-values for contrast1
T1 vs. T2	0.003	<0.001	0.059	0.115	0.965	0.635	<0.001
T1 vs. T3	0.003	<0.001	0.118	0.015	0.012	0.009	0.002
T1 vs. T4	0.072	0.010	0.266	0.062	0.252	0.331	0.024
Linear	0.091	0.022	0.342	0.040	0.058	0.108	0.050

Means represents 2 birds per pen and 10 pens/treatment.

¹Significance level (P ≤ 0.05).

SEM = Standard error of differences of means.

^†Total VFA = sum of all individual volatile fatty acids (VFA).