Items | Age of (post-ch)2
| Experimental treats | Statistics |
---|
NC | PC | CB | CS | SEM |
P-value |
---|
TNF-α, ng/L | 3d | 53.80b
| 48.88b
| 76.66a
| 65.09ab
| 7.19 | 0.030 |
7d | 65.29ab
| 53.88b
| 69.32a
| 61.51ab
| 4.72 | 0.040 |
14d | 63.39 | 50.22 | 62.92 | 61.23 | 6.88 | 0.220 |
21d | 50.56 | 35.28 | 54.46 | 56.92 | 6.92 | 0.110 |
IL-4, ng/L | 3d | 52.52 | 50.9 | 68.7 | 67.51 | 5.78 | 0.140 |
7d | 68.23a
| 52.16b
| 62.91ab
| 57.03ab
| 3.55 | 0.030 |
14d | 70.65a
| 50.46b
| 69.79a
| 59.78ab
| 4.26 | 0.010 |
21d | 52.64 | 42.59 | 56.38 | 57.09 | 6.41 | 0.350 |
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a-cMeans in the same row with different superscript letters differ significantly (P < 0.05)
-
1Each mean represents 6 birds. NC = birds fed a basal diet without challenged with E. coli K88; PC = birds fed a basal diet and challenged with E. coli K88. CB = birds fed a basal diet including 2 × 107 CFU C. butyricum/kg of diet and challenged with E. coli K88. CS = birds fed a basal diet including 20 mg colistin sulfate/kg of diet and challenged with E. coli K88
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2The days after challenging