Table 3.
Abundance of bacterial 16S rDNA sequences (n = 200,624) identified from the ileum microbiota of Cobb 500 broiler chicken.
| Phylum | Class | Abundance of Sequence (No. of Sequence [%]) at Day: | |||
|---|---|---|---|---|---|
| Day 5 | Day 15 | Day 25 | Day 35 | ||
| Acidobacteria | Acidobacteriia | 1 (0.0017) | 2 (0.0042) | 6 (0.0125) | 1 (0.0022) |
| Blastocatellia | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |
| Actinobacteria | Acidimicrobiia | 0 (0) | 3 (0.0063) | 10 (0.0208) | 0 (0) |
| Actinobacteria | 306 (0.512) | 730 (1.542) | 5581 (11.62) | 5195 (11.414) | |
| Coriobacteriia | 1 (0.0017) | 30 (0.063) | 4 (0.0083) | 2 (0.004) | |
| Rubrobacteria | 7 (0.0117) | 17 (0.036) | 37 (0.077) | 5 (0.011) | |
| Thermoleophilia | 0 (0) | 20 (0.042) | 35 (0.073) | 5 (0.011) | |
| Armatimonadetesa | Fimbriimonadia | 0 (0) | 4 (0.0084) | 0 (0) | 0 (0) |
| Bacteroidetes | Bacteroidia | 2 (0.0033) | 18 (0.038) | 20 (0.042) | 4 (0.009) |
| Chitinophagia | 0 (0) | 12 (0.025) | 3 (0.0062) | 2 (0.004) | |
| Cytophagia | 0 (0) | 11 (0.023) | 0 (0) | 0 (0) | |
| Flavobacteriia | 2 (0.0033) | 0 (0) | 0 (0) | 0 (0) | |
| Sphingobacteriia | 0 (0) | 1 (0.0021) | 3 (0.0062) | 0 (0) | |
| Chlamydiae | Chlamydiia | 0 (0) | 1 (0.0021) | 0 (0) | 0 (0) |
| Chloroflexi | Chloroflexia | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Thermomicrobia | 2 (0.0033) | 8 (0.017) | 5 (0.010) | 1 (0.002) | |
| Deinococcus-Thermus | Deinococci | 0 (0) | 0 (0) | 0 (0) | 35 (0.077) |
| Firmicutes | Bacilli | 58,731 (98.327) | 41,718 (88.13) | 20,643 (42.97) | 30,864 (67.81) |
| Firmicutes | Clostridia | 481 (0.805) | 2806 (5.927) | 11,766 (24.49) | 8474 (18.62) |
| Erysipelotrichia | 7 (0.0117) | 34 (0.072) | 84 (0.174) | 9 (0.020) | |
| Negativicutes | 0 (0) | 3 (0.0063) | 4 (0.0083) | 5 (0.011) | |
| Tissierellia | 5 (0.0084) | 4 (0.0084) | 49 (0.102) | 2 (0.004) | |
| Fusobacteriia | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |
| Gemmatimonadetes | Gemmatimonadetes | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Planctomycete | Planctomycetia | 0 (0) | 0 (0) | 2 (0.0042) | 0 (0) |
| Proteobacteria | Alphaproteobacteria | 113 (0.189) | 761 (1.608) | 2044 (4.25) | 400 (0.879) |
| Betaproteobacteria | 7 (0.0117) | 137 (0.289) | 7401 (15.41) | 493 (1.083) | |
| Deltaproteobacteria | 5 (0.0084) | 7 (0.015) | 10 (0.021) | 2 (0.004) | |
| Gammaproteobacteria | 58 (0.097) | 1012 (2.138) | 331 (0.689) | 17 (0.037) | |
| Verrucomicrobi | Verrucomicrobiae | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Unclassified | Unclassified | 2 (0.0033) | 0 (0) | 1 (0.0021) | 0 (0) |
| Total | 59,730 | 47,339 | 48,039 | 45,516 | |