Table 2.
Abundance of bacterial 16S rDNA sequences (n = 212,094) identified from the jejunum microbiota of Cobb 500 broiler chickens.
| Phylum | Class | Abundance of Sequence (No. of Sequence [%]) at Day: | |||
|---|---|---|---|---|---|
| Day 5 | Day 15 | Day 25 | Day 35 | ||
| Acidobacteria | Acidobacteriia | 4 (0.0090) | 0 (0) | 3 (0.0056) | 0 (0) |
| Blastocatellia | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |
| Actinobacteria | Acidimicrobiia | 0 (0) | 5 (0.0092) | 1 (0.0019) | 5 (0.0082) |
| Actinobacteria | 672 (1.52) | 497 (0.917) | 2826 (5.31) | 33181 (54.89) | |
| Coriobacteriia | 24 (0.054) | 14 (0.026) | 2 (0.0038) | 1 (0.0017) | |
| Rubrobacteria | 105 (0.237) | 20 (0.0369) | 0 (0) | 110 (0.182) | |
| Thermoleophilia | 22 (0.0498) | 18 (0.033) | 3 (0.0056) | 43 (0.071) | |
| Armatimonadetesa | Fimbriimonadia | 0 (0) | 0 (0) | 1 (0.0019) | 0 (0) |
| Bacteroidetes | Bacteroidia | 9 (0.02034) | 32 (0.059) | 6 (0.0112) | 4 (0.0066) |
| Chitinophagia | 5 (0.0113) | 0 (0) | 0 (0) | 12 (0.0199) | |
| Cytophagia | 0 (0) | 21 (0.039) | 2 (0.0038) | 0 (0) | |
| Flavobacteriia | 15 (0.034) | 17 (0.031) | 8 (0.015) | 1 (0.0017) | |
| Sphingobacteriia | 0 (0) | 24 (0.044) | 5 (0.0094) | 0 (0) | |
| Chlamydiae | Chlamydiia | 0 (0) | 4 (0.0073) | 0 (0) | 0 (0) |
| Chloroflexi | Chloroflexia | 4 (0.0090) | 0 (0) | 0 (0) | 0 (0) |
| Thermomicrobia | 6 (0.0136) | 0 (0) | 0 (0) | 64 (0.106) | |
| Deinococcus-Thermus | Deinococci | 0 (0) | 0 (0) | 1 (0.0019) | 302 (0.4996) |
| Firmicutes | Bacilli | 39,274 (88.83) | 50,466 (93.09) | 49,512 (93.03) | 23,605 (39.05) |
| Firmicutes | Clostridia | 2530 (5.72) | 787 (1.45) | 215 (0.404) | 2028 (3.35) |
| Erysipelotrichia | 72 (0.162) | 11 (0.020) | 13 (0.024) | 7 (0.0116) | |
| Negativicutes | 4 (0.0090) | 0 (0) | 0 (0) | 19 (0.0314) | |
| Tissierellia | 27 (0.061) | 20 (0.0369) | 0 (0) | 188 (0.311) | |
| Fusobacteriia | 0 (0) | 0 (0) | 0 (0) | 3 (0.00496) | |
| Gemmatimonadetes | Gemmatimonadetes | 3 (0.0068) | 0 (0) | 0 (0) | 4 (0.0067) |
| Planctomycete | Planctomycetia | 3 (0.0068) | 0 (0) | 0 (0) | 0 (0) |
| Proteobacteria | Alphaproteobacteria | 1067 (2.413) | 1351 (2.49) | 399 (0.75) | 449 (0.743) |
| Betaproteobacteria | 59 (0.133) | 378 (0.697) | 29 (0.054) | 307 (0.508) | |
| Deltaproteobacteria | 13 (0.029) | 41 (0.0756) | 0 (0) | 18 (0.0298) | |
| Gammaproteobacteria | 292 (0.660) | 503 (0.928) | 196 (0.368) | 97 (0.160) | |
| Verrucomicrobi | Verrucomicrobiae | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| Unclassified | Unclassified | 1 (0.0023) | 3 (0.0055) | 0 (0) | 1(0.0017) |
| Total | 44,211 | 54,212 | 53,222 | 60,449 | |