Table 3. Effects of supplemental antibiotic (AB) and bacteriophage (BP) on relative proportion of genus in the ileal and fecal microbiota of growing pigs¹⁾

Item2)	Treatment			SEM	p-values
	Control	AB3)	BP4)		Control vs. AB and BP	AB vs. BP
Ileum (%)
Clostridium	1.7	1.9	1.5	0.5	0.915	0.496
Lactobacillus	28.0	36.6	38.4	4.1	0.062	0.729
Bacillus	2.7	1.2	1.5	0.6	0.105	0.702
Bacteroides	4.6	3.0	2.4	0.8	0.074	0.560
Bifidobacterium	4.0	4.5	9.7	2.9	0.345	0.142
Megasphaera	2.8	4.1	3.7	0.8	0.295	0.751
Mitsuokella	1.9	1.4	1.7	0.6	0.697	0.762
Prevotella	7.0	6.0	4.9	1.3	0.246	0.407
Streptococcus	2.2	1.4	1.6	0.3	0.088	0.702
Veillonella	0.4	1.2	1.5	0.7	0.277	0.782
Others5)	44.4	38.7	33.1	4.0	0.110	0.320
Feces (%)
Clostridium	0.6	0.6	0.6	0.1	0.954	0.734
Lactobacillus	20.2	20.5	20.6	3.7	0.933	0.988
Bacteroides	3.9	4.9	4.0	1.1	0.688	0.484
Bifidobacterium	3.5	1.6	2.0	0.8	0.029	0.589
Faecalibacterium	1.5	1.3	1.2	0.2	0.262	0.737
Megasphaera	3.3	3.4	7.6	2.2	0.386	0.142
Oscillospira	1.4	1.5	1.2	0.2	0.723	0.107
Parabacteroides	1.0	1.4	5.5	1.6	0.245	0.080
Prevotella	7.0	6.5	6.5	1.4	0.801	0.997
Streptococcus	3.4	0.7	0.6	1.4	0.152	0.985
Ruminococcus	1.4	2.4	1.6	0.5	0.344	0.293
Succinivibrio	0.8	0.7	2.3	0.8	0.417	0.090
Treponema	1.4	0.8	1.6	0.5	0.830	0.215
Others5)	50.1	54.0	44.4	3.1	0.784	0.032

Each least squares mean represents 8 observations except the control diet (n = 7).
The taxa at the genus level with more than 1% average proportion in all samples were selected.
Avilamix (avilamycin 20 g/kg, CTCBIO, Seoul, Korea) was supplemented at 0.1%.
BacterPhage (CTCBIO) was supplemented at 0.2%. The product contained a mixture of BP consisted of Clostridium perfringens types A and C, Escherichia coli (f41, k88, and k99), Salmonella spp. (Salmonella choleraesuis, Salmonella derby, Salmonella enteritidis, and Salmonella typhimurium), and Staphylococcus aureus. The BP product contained 10⁹ plaque-forming units per gram.
Genus less than 0.1% of the average in all groups and the unclassified genera.