Table 4.

Effect of Lys-Lys on bacteria at the phylum and family levels in piglets^a.

Item	Control	0.1% Lys-Lys	1% Lys-Lys	5% Lys-Lys
Phylum
Firmicutes	0.76 ± 0.04	0.74 ± 0.07	0.73 ± 0.06	0.69 ± 0.07
Bacteroidetes	0.20 ± 0.04	0.21 ± 0.07	0.14 ± 0.02	0.25 ± 0.07
Proteobacteria	0.02 ± 0.01	0.03 ± 0.01	0.08 ± 0.03	0.03 ± 0.01
Family
Ruminococcaceae	0.41 ± 0.05	0.41 ± 0.05	0.36 ± 0.05	0.42 ± 0.08
Bacteroidales	0.13 ± 0.30	0.12 ± 0.06	0.06 ± 0.02*	0.06 ± 0.02
Erysipelotrichaceae	0.07 ± 0.03	0.10 ± 0.05	0.11 ± 0.05	0.05 ± 0.02
Prevotellaceae	0.05 ± 0.02	0.07 ± 0.03	0.05 ± 0.02	0.14 ± 0.06
Enterobacteriaceae	0.02 ± 0.01	0.01 ± 0.002	0.07 ± 0.03	0.02 ± 0.01

^aData were expressed as the mean ± SEM (n = 7).

^*Different from control, P < 0.05.