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

Table 5 Effects of dietary treatments on concentrations (nmol/L) of free essential amino acids in plasma from the portal circulation (anterior mesenteric vein) at 35 d post-hatch^d

Treatment		Arginine	Histidine	Isoleucine	Leucine	Lysine	Methionine	Phenyl- alanine	Threonine	Tryptophan	Valine
Starch	Protein	Arginine	Histidine	Isoleucine	Leucine	Lysine	Methionine	Phenyl- alanine	Threonine	Tryptophan	Valine
Waxy rice	High	394	71^a	114^ab	327^cd	234^a	90^ab	190	493	73	205^bc
Waxy rice	Low	514	60^a	121^b	186^a	264^ab	113^b	149	766	79	167^ab
Maize	High	388	100^b	126^b	349^d	227^a	92^ab	200	553	70	233^c
Maize	Low	365	58^a	80^a	220^ab	194^a	96^ab	139	761	71	132^a
Amylose	High	336	64^a	112^ab	295^cd	218^a	74^b	187	578	72	174^ab
Amylose	Low	455	71^a	118^b	270^bc	347^b	151^c	180	951	83	181^b
SEM		16.96	3.87	4.93	12.68	13.85	6.04	6.54	49.53	2.06	8.15
Main effects: Starch
Waxy rice		454	66	117	256	249	102	170	630	76	186
Maize		377	79	103	285	210	94	169	657	70	183
Amylose		396	68	115	282	282	112	183	765	78	178
Protein
High		373^a	78	117	324	226	85	192^b	541^a	72	204
Low		445^b	63	106	225	268	120	156^a	826^b	77	160
Significance (P-value)
Starch		0.099	0.162	0.379	0.298	0.064	0.264	0.520	0.452	0.335	0.853
Protein		0.020	0.018	0.244	< 0.001	0.095	0.001	0.004	0.004	0.179	0.002
Starch × Protein		0.082	0.008	0.031	0.010	0.034	0.008	0.155	0.752	0.585	0.004

^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