At the beginning of the experiment (d 0), there were no differences in fecal lactobacilli, E. coli, anaerobes and aerobes counts among dietary treatments (p = 0.68). On d
14 post-weaning, pigs fed the control diet had the lowest fecal lactobacilli count among all dietary treatments (p = 0.02), whereas pigs fed antibiotics or 0.5% ASD had a trend
for lower fecal E. coli count compared to the control pigs (p = 0.08). However, there were no differences in the counts of anaerobes and aerobes among dietary treatments at d 14 after weaning (p = 0.23).