Table 6. Effect of dietary treatments ‎on small intestine morphology of male broiler chicks at 10 days of age

Item	Dietary treatments¹⁾						SEM	p-value
Item	T1	T2	T3	T4	T5	T6	SEM	GA	L	Q
Doud. length (%)	16.8	17.1	16.7	17.0	16.2	16.6	0.44	0.81	0.89	0.99
Doud. weight (%)	19.0	18.5	20.5	19.9	18.0	18.3	0.66	0.20	0.95	0.12
Jej. length (%)	42.6	42.7	43.3	42.8	42.9	42.8	0.60	0.98	0.65	0.96
Jej. weight (%)	47.4	44.2	43.3	43.5	47.2	48.0	1.19	0.04	0.12	0.03
Ile. length (%)	40.6	40.1	40.0	40.2	40.9	40.6	0.77	0.98	0.78	0.97
Ile weight (%)	33.6	37.2	36.2	36.6	34.7	33.6	1.42	0.41	0.20	0.01
Total length (cm)	125.8	122.1	126.8	129.2	123.3	114.2	2.93	0.06	0.41	0.38
Total weight (g)	25.2	28.2	24.0	28.3	24.7	23.1	1.28	0.06	0.74	0.09
SI (%)	9.6	9.2	8.2	9.2	8.7	8.9	0.33	0.13	0.04	0.04
weight/length ratio	0.20^b	0.23^a	0.18^b	0.22^b	0.20^b	0.20^b	0.008	0.01	0.34	0.04

Dietary treatments from T1 to T6 supplemented by 0.0%, 0.12%, 0.25%, 0.50%, 0.75%, and 1.0% of gum Arabic, respectively.
Means that do not share a common superscripted with control treatment (T1) within a row for each parameter has a significant effect, as determined by the Dunnett test (p < 0.05).
SEM, standard error of means for diet effect; GA, gum Arabic levels effect; L, linear response; Q, quadratic response; Doud, duodenum; Jej, jejunum; Ile, ileum; SI, small intestine.