Table 7.

Growth performance, bone characteristics, and ileal digestibility in broilers fed diets with 15% whole RSM (F1), 12% dehulled RSM (F2), and 12% dehulled rapeseed meal with 4.5% (F3) or 9% defatted rapeseed hulls (F4) without (−) or with (+) phytase (Exp2: 21 to 31 d).¹

	RSM		Dehulled RSM							P-value2
					4.5% hulls		9.0% 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	F1-	F1+	F2-	F2+	F3-	F3+	F4-	F4+	SEM	Lin	Lin	Lin	Lin	Qua	Lin	Qua
Performances
BW 21 d, g	939	948	955	948	951	939	953	960	4.34	0.96	0.33	0.98	0.89	0.84	0.52	0.33
BW 31 d, g	1807	1825	1796	1862	1811	1798	1758	1792	8.40	0.12	0.73	0.25	0.25	0.23	0.042	0.34
ADG, g/j	90.1	90.1	87.2	95.4	90.6	88.2	84.6	84.3	0.84	0.37	0.31	0.080	0.38	0.073	0.001	0.55
ADFI, g/d	138.2	139.6	131.1	144.1	137.2	131.3	134.0	129.8	1.111	0.60	0.079	0.26	0.49	0.19	0.001	0.13
FCR	1.54	1.53	1.51	1.51	1.52	1.49	1.56	1.49	0.01	0.11	0.32	0.60	0.10	0.59	0.49	0.65
Tibia characteristics
Dry weight, g	5.05	5.40	5.33	5.46	5.31	5.32	5.10	5.40	0.04	0.005	0.071	0.33	0.15	0.51	0.65	0.052
Ash weight, g DM	1.74	1.88	1.79	1.96	1.76	1.8	1.68	1.82	0.02	<0.001	0.36	0.14	0.071	0.56	0.018	0.070
Ash, % DM	33.9	34.9	33.6	35.4	33.2	33.4	33.0	33.0	0.19	0.021	0.60	0.40	0.40	0.92	0.004	0.11
BS3, N	171	181	167	175	157	170	141	166	2.40	0.011	0.68	0.55	0.087	0.83	0.31	0.92

¹n = 18 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.

³Bone breaking strength.