Table 7.
Alpha diversity and relative bacterial abundance (%) at the phylum and genus levels in broiler chickens fed a corn–soybean meal diet supplemented with nucleotide-rich yeast extract (YN) and challenged with Eimeria, 5 d postchallenge.
| Main effect, Eimeria | Main effect, YN, g/mt | Probabilities | ||||||
|---|---|---|---|---|---|---|---|---|
| No | Yes | SEM | No | Yes | SEM | Eimeria | YN | |
| Alpha diversity | ||||||||
| Coverage1 | 0.98 | 0.98 | 0.004 | 0.98 | 0.98 | 0.004 | 0.580 | 0.613 |
| Inverse-simpson2 | 31.5 | 28.5 | 0.193 | 31.2 | 29.2 | 0.193 | 0.521 | 0.674 |
| Chao13 | 6474 | 6426 | 241 | 6931 | 5973 | 123 | 0.925 | 0.069 |
| Shannon4 | 4.49 | 4.53 | 0.01 | 4.54 | 4.48 | 0.01 | 0.774 | 0.601 |
| Phylum | ||||||||
| Bacteroidetes | 8.65 | 12.3 | 1.52 | 10.8 | 9.79 | 1.63 | 0.130 | 0.650 |
| Firmicutes | 88.7 | 83.8 | 1.78 | 86.4 | 86.5 | 1.57 | 0.064 | 0.971 |
| Actinobacteria | 2.29 | 3.62 | 0.67 | 2.41 | 3.38 | 0.67 | 0.930 | 0.323 |
| Genus | ||||||||
| Faecalibacterium | 27.0 | 23.6 | 3.22 | 24.8 | 26.0 | 3.23 | 0.484 | 0.795 |
| Alistipes | 18.6 | 25.1 | 3.05 | 23.0 | 20.1 | 3.24 | 0.174 | 0.542 |
| Clostridium_IV | 9.84 | 8.77 | 0.87 | 9.62 | 9.09 | 0.87 | 0.415 | 0.682 |
| Clostridium_XlVa | 9.94a | 5.37b | 1.37 | 9.59 | 6.14 | 1.49 | 0.034 | 0.098 |
| Acetanaerobacterium | 5.17 | 5.86 | 0.43 | 5.75 | 5.22 | 0.44 | 0.283 | 0.402 |
| Bifidobacterium | 4.35 | 6.32 | 1.44 | 4.29 | 6.19 | 1.43 | 0.361 | 0.375 |
| Subdoligranulum | 4.24 | 5.79 | 2.13 | 3.45 | 6.44 | 2.08 | 0.615 | 0.333 |
| Butyricicoccus | 5.03 | 4.13 | 0.58 | 4.58 | 4.67 | 0.60 | 0.282 | 0.917 |
| Flavonifractor | 3.40 | 3.27 | 0.61 | 2.66 | 4.03 | 0.66 | 0.900 | 0.193 |
| Blautia | 3.19 | 3.00 | 0.68 | 3.87 | 2.34 | 0.64 | 0.859 | 0.169 |
| Clostridium_XlVb | 2.52 | 2.45 | 0.39 | 2.37 | 2.60 | 0.39 | 0.900 | 0.694 |
| Oscillibacter | 1.67a | 1.09b | 0.17 | 1.14 | 1.68 | 0.21 | 0.050 | 0.062 |
| Ruminococcus2 | 1.35 | 1.17 | 0.27 | 1.48 | 1.05 | 0.27 | 0.658 | 0.293 |
| Pseudoflavonifractor | 1.10 | 1.12 | 0.16 | 1.08 | 1.14 | 0.16 | 0.915 | 0.829 |
| Anaerostipes | 0.44 | 1.11 | 0.27 | 0.28b | 1.21a | 0.21 | 0.063 | 0.013 |
1Good's coverage represents the percentage of the total species represented in a sample.
2Indicator of richness in a microbial community with uniform richness with the same level of diversity.
3Estimator of diversity from abundance data.
4Characterizes species diversity considering abundance and evenness of species present.
Means assigned different letter superscripts within a response criterion differ, P ≤ 0.05.