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.