Table 5.

Relative empty weight and pH of the digestive segment of broilers fed diets with 12% whole RSM (G1), 8.4% dehulled RSM (G2), and 8.4% dehulled rapeseed meal with 3.6% (G3) or 7.2% defatted rapeseed hulls (G4) without (−) or with (+) phytase (Exp1: 10 to 21 d).¹

	RSM		Dehulled RSM							P-value2
					3.6% hulls		7.2% hulls			Microbial phytase effect	Dehulled effect		Hull inclusion effect
Diets	1	2	3	4	5	6	7	8		1,3,5,7 vs. 2,4,6,8,	1 vs. 3	2 vs. 4	3 vs. 5 vs. 7		4 vs. 6 vs. 8
Description	G1-	G1+	G2-	G2+	G3-	G3+	G4-	G4+	SEM	Lin	Lin	Lin	Lin	Qua	Lin	Qua
Weight, g/kg BW
Crop	4.6	4.8	4.6	4.3	4.8	4.1	4.6	4.3	0.10	0.11	0.89	0.23	0.85	0.47	0.94	0.57
PG3	26.0	26.7	23.3	24.6	25.2	26.6	25.9	27.3	0.26	0.011	0.007	0.032	0.006	0.46	0.005	0.42
Duodenum	12.8	13.3	12.9	12.6	12.6	13.8	13.1	12.9	0.18	0.25	0.93	0.36	0.75	0.31	0.71	0.10
Jejunum	18.9	18.5	19.3	19.1	18.1	19.3	19.3	19.7	0.23	0.60	0.67	0.53	0.94	0.14	0.54	0.86
Ileum	13.1	13.1	13.1	12.8	12.2	12.6	14.3	13.0	0.16	0.27	0.99	0.54	0.024	0.001	0.74	0.51
Ceca	5.4	4.5	4.8	5.0	4.7	4.9	4.9	5.5	0.07	0.99	0.037	0.068	0.69	0.49	0.061	0.10
pH
PG3	2.26	2.46	2.79	2.55	2.55	2.48	2.49	2.44	0.05	0.65	0.003	0.60	0.081	0.54	0.53	0.96
Duodenum	6.01	5.87	5.79	6.17	6.11	6.04	5.94	5.92	0.03	0.57	0.053	0.035	0.17	0.030	0.068	0.97
Jejunum	6.12	6.11	6.09	6.08	6.05	6.06	6.04	6.03	0.01	0.72	0.32	0.50	0.20	0.63	0.16	0.96
Proximal ileum	6.94	7.08	7.01	7.04	7.0	7.0	6.98	6.94	0.04	0.61	0.52	0.81	0.85	1.00	0.49	0.95
Ceca	6.14	6.24	5.99	6.33	6.27	6.27	6.08	6.03	0.04	0.27	0.37	0.61	0.60	0.11	0.088	0.54

¹n = 12 per treatment.

²Contrast analysis: linear effect of microbial phytase; linear effect of dehulled rapeseed seed without and with microbial phytase; linear and quadratic effects of the inclusion of hulls without and with microbial phytase.

³Proventriculus-gizzard.