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. 2020 May 5;99(6):3092–3101. doi: 10.1016/j.psj.2019.10.004

Table 8.

Effects of star anise oil on the relative protein expression in the liver of E. coli–challenged birds.1

Items SOD CAT Nrf2
Treatment
 Basal diet, unchallenged 1.61 1.15 1.18
 200 mg/kg of star anise oil, unchallenged 1.71 1.28 1.31
 400 mg/kg of star anise oil, unchallenged 1.80 1.51 1.52
 600 mg/kg of star anise oil, unchallenged 1.51 1.46 1.38
 Basal diet, challenged 1.19 1.15 1.10
 200 mg/kg of star anise oil, challenged 1.25 1.23 1.21
 400 mg/kg of star anise oil, challenged 1.40 1.45 1.40
 600 mg/kg of star anise oil, challenged 1.28 1.34 1.04
 SEM 0.069 0.043 0.058
Star anise oil
 0 1.40b 1.15c 1.14b
 200 1.48a,b 1.26b 1.26b
 400 1.60a 1.48a 1.46a
 600 1.40b 1.40a 1.21b
E. coli challenge
 0 1.66a 1.35 1.35a
 + 1.28b 1.30 1.19b
P values
 Star anise oil 0.017 <0.001 <0.001
 Liner2 0.761 <0.001 0.124
 Quadratic2 0.175 <0.001 0.001
 E. coli <0.001 0.088 <0.001
 Star anise oil × E. coli 0.397 0.609 0.097

a–cMeans within a row with different letters differ significantly (P < 0.05).

1

Data are means for 8 replicates per treatment.

2

Liner and quadratic polynomial contrasts were performed on the means within the E. coli–challenged or unchallenged groups to star anise oil dosages.