Table 7.

Effect of a phytase supplementation on prececal CP and amino acid digestibility (%) of RSM, SBM, and SFM in broiler chickens calculated by regression analysis.

Phytase		RSM		P value	SBM		P value	SFM		P value
		−	+		−	+		−	+
CP		63	67	0.324	83	84	0.951	72	74	0.577
	SE	3.1	2.8		2.1	2.0		2.8	2.6
Essential amino acids
Arg		73	79	0.040	88	90	0.337	86	88	0.352
	SE	2.5	1.9		1.3	1.2		1.4	1.3
His		68	66	0.705	84	81	0.363	66	65	0.729
	SE	3.0	3.4		2.2	2.6		3.4	3.8
Ile		66	80	0.004	86	89	0.227	80	84	0.311
	SE	0.4	2.4		2.3	1.6		2.9	2.2
Leu		66	75	0.158	82	84	0.507	73	75	0.798
	SE	4.8	3.5		2.9	2.4		4.2	3.6
Lys		65	73	0.030	88	90	0.612	73	74	0.955
	SE	2.7	2.2		1.5	1.4		3.3	3.0
Met		84	86	0.518	89	85	0.298	88	88	0.855
	SE	2.7	2.3		2.6	2.7		1.9	1.7
Phe		67	76	0.065	84	87	0.373	79	81	0.496
	SE	3.9	2.9		2.0	1.7		2.8	2.5
Thr		60	67	0.100	81	81	0.949	70	74	0.422
	SE	3.1	2.6		2.4	2.2		3.2	2.7
Trp		71	70	0.756	84	84	0.825	77	77	0.817
	SE	2.9	2.2		2.2	2.3		2.7	2.5
Val		67	78	0.013	84	87	0.382	80	83	0.351
	SE	3.5	2.3		2.7	1.9		2.8	2.2
Nonessential amino acids
Ala		65	73	0.160	81	81	0.945	73	74	0.905
	SE	4.4	3.5		2.9	2.7		3.7	3.4
Asx		57	65	0.174	82	84	0.588	69	73	0.288
	SE	4.3	3.6		1.7	1.6		2.9	2.7
Cys		70	74	0.154	73b	81a	0.039	66b	76a	0.037
	SE	2.5	2.2		2.7	2.6		3.2	3.3
Glx		74	80	0.061	86	88	0.422	82	86	0.161
	SE	2.5	2.1		1.5	1.4		1.9	1.7
Gly		66	72	0.143	81	82	0.848	62	66	0.177
	SE	3.1	2.5		2.5	2.3		2.1	2.0
Pro		56	66	0.034	82	84	0.700	70	76	0.328
	SE	3.6	2.9		2.9	2.7		4.6	3.7
Ser		58	63	0.363	83	84	0.925	63	66	0.510
	SE	4.2	3.8		2.3	2.3		3.8	3.7
Tyr		64	72	0.104	86	88	0.460	75	77	0.634
	SE	4.1	3.1		2.3	2.0		3.9	3.3

Values in the same row and oilseed meal not sharing a common superscript letter are significantly different (P ≤ 0.05).

Abbreviations: CP, crude protein; RSM, rapeseed meal; SBM, soybean meal; SE, standard error of the estimated slope; SFM, sunflower meal.