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Table 9 Serum cytokine levels in 5th and 10th week

From: Soya saponin improves egg-laying performance and immune function of laying hens

  Item Control 50 ppm SS 500 ppm SS P-value
5th week(27 weeks old, n = 6) IL-2, pg/mL 72.05 ± 4.25 66.95 ± 4.88 70.11 ± 4.92 0.198
IL-6, pg/mL 83.24 ± 9.76 88.42 ± 14.52 91.17 ± 18.16 0.640
IL-4, pg/mL 20.08 ± 2.83a 23.45 ± 4.47ab 29.87 ± 8.57b 0.032
IFN-γ, pg/mL 62.47 ± 13.16 67.01 ± 10.64 82.20 ± 21.04 0.104
IFN-γ/IL-4 3.10 ± 0.42 2.93 ± 0.60 2.78 ± 0.16 0.450
10th week(32 weeks old, n = 8) IL-2, pg/mL 70.98 ± 5.14 73.56 ± 8.82 74.66 ± 9.22 0.643
IL-6, pg/mL 101.90 ± 18.43 111.58 ± 25.05 120.06 ± 22.58 0.283
IL-4, pg/mL 21.21 ± 6.61a 28.99 ± 5.92b 26.02 ± 4.35ab 0.039
IFN-γ, pg/mL 55.04 ± 14.61a 66.13 ± 14.34ab 78.17 ± 12.35b 0.011
IFN-γ/IL-4 2.63 ± 0.24ab 2.33 ± 0.52a 3.04 ± 0.48b 0.012
  1. At the end of the 5th and 10th week of the trial, 6–8 birds from each treatment were selected to obtain wing vein blood and harvest serum. The levels of some cytokines in the serum were measured. The data in Table 9 different superscript letters indicate significant difference (P < 0.05); same superscript letters indicate no difference (P > 0.1), the same below