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

Table 5.

Effects of star anise oil on antioxidant enzymatic activities in serum of E. coli–challenged birds.1

Items SOD GSH-Px CAT MDA
Treatment
 Basal diet, unchallenged 666.8 1683.8a,b 1.861 4.984b
 200 mg/kg of star anise oil, unchallenged 698.9 1682.1a,b 2.087 4.689b
 400 mg/kg of star anise oil, unchallenged 688.2 1712.8a,b 2.202 4.727b
 600 mg/kg of star anise oil, unchallenged 675.8 1743.6a 2.042 5.344a
 Basal diet, challenged 670.3 1659.8b 1.762 5.656a
 200 mg/kg of star anise oil, challenged 691.9 1665.0b 1.999 5.000b
 400 mg/kg of star anise oil, challenged 676.8 1700.9a,b 2.273 5.697a
 600 mg/kg of star anise oil, challenged 647.2 1528.2c 1.912 5.639a
 SEM 16.352 24.192 0.077 0.086
Star anise oil
 0 668.5 1671.8 1.811c 5.320
 200 695.4 1673.5 2.042b 4.844
 400 682.5 1706.8 2.238a 5.212
 600 661.5 1635.9 1.977b 5.492
E. coli challenge
 0 682.4 1705.6 2.048 4.936
 + 671.5 1638.5 1.986 5.498
P values
 Star anise oil 0.184 0.048 <0.001 <0.001
 Liner2 0.517 0.486 0.022 0.151
 Quadratic2 0.093 0.241 <0.001 0.006
 E. coli 0.353 <0.001 0.264 <0.001
 Star anise oil × E. coli 0.801 <0.001 0.563 0.015

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.