Table 7.

Effects of dietary treatments on ileal microbiota composition (log cfu/g fresh digesta) of laying hens at 62 wk of age.

Basal diet	MC1 level	BG2 level	Total bacteria	Lactobacillus spp.	Bifidobacterium spp.	Escherichia coli	Salmonella spp.
Corn	−	−	6.36	5.04	4.29	4.88d	4.11
Corn	−	+	6.21	5.09	4.76	4.92d	3.66
Corn	+	−	6.23	5.09	4.80	5.01c,d	4.07
Corn	+	+	6.17	5.31	4.84	4.74d	3.38
Wheat	−	−	7.21	4.57	4.22	6.85a	4.61
Wheat	−	+	6.57	4.94	4.48	5.48b,c	4.10
Wheat	+	−	7.08	5.17	4.74	5.70b	4.34
Wheat	+	+	6.35	5.16	4.71	5.09c,d	3.73
SEM			0.219	0.177	0.230	0.180	0.191
Main effect means
Basal diet
Corn			6.24b	5.13	4.67	4.89b	3.81b
Wheat			6.80a	4.96	4.54	5.78a	4.20a
SEM			0.109	0.088	0.115	0.089	0.096
MC level
−			6.59	4.91b	4.44b	5.53a	4.12
+			6.46	5.18a	4.77a	5.14b	3.88
SEM			0.109	0.088	0.115	0.089	0.096
BG level
−			6.72a	4.97	4.51	5.61a	4.28a
+			6.32b	5.12	4.70	5.06b	3.72b
SEM			0.109	0.088	0.115	0.089	0.096
Significance
Basal diet			<0.001	0.175	0.413	<0.001	0.006
MC level			0.401	0.036	0.046	0.003	0.086
BG level			0.015	0.212	0.266	<0.001	<0.001
Diet × MC			0.754	0.292	0.821	0.006	0.540
Diet × BG			0.068	0.858	0.668	0.001	0.963
MC × BG			0.994	0.667	0.268	0.356	0.544
Diet × MC × BG			0.767	0.280	0.825	0.043	0.786

^a-dMeans within each column with no common superscript differ (P < 0.05).

¹Multicarbohydrase.

²Butyrate glycerides.