Influence of starch sources and dietary protein levels on intestinal functionality and intestinal mucosal amino acids catabolism in broiler chickens

Table 3 Effects of dietary treatments on growth performance in the starter phase (6 to 20 d post-hatch), grower phase (21 to 35 d post-hatch) and overall (from 6 to 35 d post-hatch)^d

Treatment		Starter phase			Grower phase			Overall
Starch	Protein	Gain, g/bird	Intake, g/bird	FCR	Gain, g/bird	Intake, g/bird	FCR	Gain, g/bird	Intake, g/bird	FCR
Waxy rice	High	720	971	1.349	1488	2539	1.655	2222	3546	1.555
Waxy rice	Low	734	1035	1.411	1462	2356	1.613	2169	3392	1.545
Maize	High	703	1099	1.446	1537	2527	1.636	2231	3529	1.579
Maize	Low	686	1044	1.522	1511	2482	1.644	2196	3547	1.615
Amylose	High	714	1018	1.426	1576	2502	1.588	2289	3520	1.527
Amylose	Low	691	1019	1.476	1532	2459	1.620	2208	3478	1.564
SEM		4.49	7.46	0.0113	11.62	21.91	0.0071	16.16	26.84	0.0073
Main effects: Starch
Waxy rice		727^a	1003	1.380^a	1475^b	2448	1.634	2195	3649	1.550^a
Maize		694^b	1027	1.484^c	1524^ab	2505	1.640	2214	3538	1.597^b
Amylose		702^b	1018	1.451^b	1554^a	2481	1.604	2249	3499	1.545^a
Protein
High		712	999^b	1.410^b	1533	2523^a	1.626	2247^a	3532	1.553
Low		704	1033^a	1.470^a	1502	2433^b	1.626	2191^b	3472	1.557
Significance (P-value)
Starch		0.004	0.370	< 0.001	0.017	0.551	0.072	0.182	0.610	0.002
Protein		0.279	0.020	< 0.001	0.141	0.039	0.966	0.024	0.290	0.074
Starch × Protein		0.117	0.182	0.747	0.924	0.302	0.076	0.713	0.442	0.179

^dValues are the mean and pooled standard error of the mean (SEM), n = 6 chicken/group
^a-cmeans within each group with different letter designations differ (P < 0.05)

ISSN: 2049-1891