Table 9.
Abundance of bacterial 16S rDNA sequences (n = 268,837) isolated from the ileum microbiota of Omani chicken.
| Phylum | Class | Abundance of Sequence (No. of Sequence [%]) at Day: | |||
|---|---|---|---|---|---|
| Day 5 | Day 15 | Day 25 | Day 35 | ||
| Acidobacteria | Acidobacteriia | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Blastocatellia | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |
| Actinobacteria | Acidimicrobiia | 2 (0.003) | 0 (0) | 0 (0) | 0 (0) |
| Actinobacteria | 948 (1.39) | 692 (0.831) | 509 (0.759) | 1754 (3.48) | |
| Coriobacteriia | 17 (0.025) | 1 (0.001) | 21 (0.031) | 12 (0.024) | |
| Rubrobacteria | 11 (0.016) | 2 (0.002) | 15 (0.022) | 5 (0.01) | |
| Thermoleophilia | 12 (0.018) | 1 (0.001) | 10 (0.015) | 2 (0.004) | |
| Armatimonadetes | Fimbriimonadia | 0 (0) | 0 (0) | 1 (0.001) | 0 (0) |
| Bacteroidetes | Bacteroidia | 17 (0.025) | 23 (0.028) | 231 (0.345) | 11 (0.022) |
| Chitinophagia | 12 (0.018) | 0 (0) | 6 (0.009) | 1 (0.002) | |
| Cytophagia | 8 (0.012) | 0 (0) | 0 (0) | 0 (0) | |
| Flavobacteriia | 2 (0.003) | 4 | 4 (0.006) | 3 (0.006) | |
| Sphingobacteriia | 7 (0.010) | 0 (0) | 2 (0.003) | 1 (0.002) | |
| Chlamydiae | Chlamydiia | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Chloroflexi | Anaerolineae | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Ktedonobacteria | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |
| Thermomicrobia | 13 (0.019) | 8 (0.010) | 5 (0.007) | 1 (0.002) | |
| Deinococcus-Thermus | Deinococci | 1 (0.001) | 0 (0) | 4 (0.006) | 1 (0.002) |
| Firmicutes | Bacilli | 58,866 (86.44) | 70,958 (85.19) | 47,702 (71.15) | 43,183 (85.68) |
| Clostridia | 6286 (9.23) | 10,840 (13.01) | 17,497 (26.10) | 5187 (10.29) | |
| Erysipelotrichia | 143 (0.210) | 56 (0.067) | 93 (0.139) | 26 (0.052) | |
| Negativicutes | 11 (0.016) | 1 (0.001) | 15 (0.022) | 12 (0.024) | |
| Tissierellia | 17 (0.025) | 2 (0.002) | 3 (0.004) | 0 (0) | |
| Fusobacteria | Fusobacteriia | 0 (0) | 1 (0.001) | 5 (0.007) | 0 (0) |
| Gemmatimonadetes | Gemmatimonadetes | 0 (0) | 0 | 0 (0) | 0 (0) |
| Planctomycetes | Planctomycetia | 0 (0) | 0 | 1 (0.001) | 0 (0) |
| Proteobacteria | Alphaproteobacteria | 500 (0.734) | 217 (0.261) | 432 (0.644) | 110 (0.218) |
| Betaproteobacteria | 180 (0.264) | 34 (0.041) | 120 (0.179) | 33 (0.065) | |
| Deltaproteobacteria | 14 (0.020) | 1 (0.001) | 11 (0.016) | 2 (0.004) | |
| Epsilonproteobacteria | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |
| Gammaproteobacteria | 1032 (1.52) | 449 (0.539) | 355 (0.529) | 53 (0.105) | |
| Spirochaetes | Spirochaetia | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Tenericutes | Mollicutes | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Verrucomicrobia | Opitutae | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Verrucomicrobiae | 0 (0) | 0 (0) | 1 (0.001) | 1 (0.002) | |
| Unclassified | Unclassified | 2 (0.003) | 0 (0) | 3 (0.004) | 2 (0.004) |
| Total | 68,101 | 83,290 | 67,046 | 50,400 | |