Table 7. Effect of dietary Fe concentration and source on fecal microflora in weanling pigs

Item Inorganic (ppm) HME (ppm) Organic (ppm) SEM p-value
100 50 75 100 100
Phase I (d 14)
 Total anaerobic bacteria 9.37 9.53 9.42 9.39 9.35 0.08 0.190
Lactobacillus spp. 8.19 8.16 8.15 8.18 8.13 0.02 0.096
Coliforms spp. 6.59ab 6.61ab 6.69ab 6.56b 6.74a 0.04 0.013
Phase II (d 28)
 Total anaerobic bacteria 9.67 9.70 9.65 9.49 9.55 0.24 0.275
Lactobacillus spp. 8.44ab 8.36b 8.50ab 8.58a 8.54a 0.05 0.006
Coliforms spp. 5.96ab 6.06a 5.97ab 5.87b 5.91b 0.04 0.002
Values with different superscripts of the row significantly differ (p < 0.05).
HME, hot melt extrusion; SEM, standard error of means.