Table 8.
Cecal microbiota (total bacteria, yeasts and molds, E. coli, coliform, Salmonella spp., Enterococcus spp., and lactic acid bacteria) are represented (Log CFU/g) broiler during feeding as affected by dietary supplementation of ZnNPs, CurNPs, and Bacillus licheniformis. (n = 5).
| Samples | Total Bacteria | Total Yeasts and Molds | E. coli | Salmonella spp. | Enterococcus spp. | Coliform | Lactic Acid Bacteria |
|---|---|---|---|---|---|---|---|
| Control | 9.20 a | 3.92 a | 5.70 a | 1.58 | 5.82 a | 6.70 a | 4.51 d |
| T1 | 8.40 b | 3.59 ab | 5.50 ab | ND | 5.60 b | 6.51 ab | 4.81 cd |
| T2 | 7.83 bc | 3.52 b | 5.30 b | ND | 5.50 b | 6.23 b | 5.20 c |
| T3 | 7.65 c | 3.41 bc | 5.11 c | ND | 5.21 bc | 6.25 c | 5.42 c |
| T4 | 7.40 cd | 3.21 c | 4.82 cd | ND | 5.12 c | 5.84 c | 5.62 b |
| T5 | 7.25 d | 3.00 cd | 4.62 d | ND | 4.90 c | 5.55 cd | 5.81 ab |
| T6 | 6.50 e | 2.80 d | 4.44 d | ND | 4.71 d | 5.26 d | 6.18 a |
| SEM | 0.17 | 0.22 | 0.14 | 0.20 | 0.30 | 0.19 | 0.20 |
| p value | 0.001 | 0.004 | 0.001 | 0.001 | 0.012 | 0.021 | 0.002 |
Basal diet (Control); T1: basal diet + 3.0 cm3 ZnNPs; T2: basal diet + 5.0 cm3 CurNPs; T3: basal diet + 2.0 cm3 Bl; T4: basal diet + 3.0 cm3 ZnNPs + 2 cm3 BL; T5: basal diet +3.0 cm3 ZnNPs + 5.0 cm3 CurNPs and T6: basal diet + 3.0 ZnNPs + 5.0 CurNPs + 2.0 cm3 Bl; E. coli: Escherichia coli; SEM: standard error mean. a–e: Different letters within one column are significantly different (p < 0.05).