Table 3 Relative abundance (%) of the main bacterial taxonomic groups in representative fecal samples from Control and Peptiva-fed pigs in each of Phase II and III diets

Firmicutes

81.3 ± 6.1

77.4 ± 7.7

81.7 ± 6.6

85.3 ± 6.8

Lactobacillaceae^#

44.8^a ± 9.0

13.4^b ± 6.8

13.0^b ± 5.1

16.0^b ± 5.9

Lachnospiraceae

13.2 ± 2.9

12.7 ± 2.4

7.8 ± 2.4

5.9 ± 1.3

Erysipelotrichaceae

1.5 ± 0.5

3.7 ± 1.5

0.7 ± 0.2

0.7 ± 0.2

Ruminococcaceae

5.4 ± 1.6

6.1 ± 2.0

2.2 ± 0.5

2.3 ± 0.7

Clostridiaceae1

5.9 ± 3.3

17.3 ± 6.2

11.8 ± 6.6

18.9 ± 6.0

Peptostreptococcaceae

1.2 ± 0.4

4.2 ± 2.5

1.1 ± 0.3

2.5 ± 1.0

Streptococcaceae^#

2.1^a ± 0.7

9.0^ab ± 4.3

32.2^c ± 9.2

25.6^bc ± 6.6

Veillonellaceae

0.5 ± 0.2

1.9 ± 1.3

3.4 ± 1.2

3.1 ± 0.9

 unclassified Clostridiales

3.1 ± 1.0

4.2 ± 0.7

2.2 ± 0.4

2.8 ± 0.7

 Other Firmicutes

3.6 ± 0.8

4.8 ± 1.1

7.4 ± 1.5

7.4 ± 1.1

Bacteroidetes

16.3 ± 5.9

20.4 ± 7.1

17.4 ± 6.5

13.5 ± 6.8

Prevotellaceae

14.0 ± 6.1

13.1 ± 6.4

16.0 ± 6.4

11.8 ± 6.8

Porphyromonadaceae

1.4 ± 0.6

4.5 ± 2.2

0.5 ± 0.2

1.1 ± 0.8

 Other Bacteroidetes

0.8 ± 0.2

2.7 ± 1.8

0.8 ± 0.3

0.6 ± 0.3

Other Phyla

1.5 ± 1.0

1.2 ± 0.7

0.3 ± 0.09

0.5 ± 0.3

Unclassified Bacteria

0.9 ± 0.2

1.0 ± 0.3

0.6 ± 0.1

0.7 ± 0.2