Table 4.

Effects of glucose oxidase on organ indices of ducks infected by Escherichia coli O88, %.

Items	Control	Antibiotic	Glucose oxidase	P-value
Day 9
Liver	3.87 ± 0.58	4.26 ± 0.59	4.52 ± 0.33	0.115
Spleen	0.14 ± 0.03	0.15 ± 0.03	0.17 ± 0.05	0.308
Bursa of Fabricius	0.21 ± 0.03	0.21 ± 0.03	0.21 ± 0.04	0.995
Day 14
Liver	5.20 ± 0.61	5.74 ± 0.70	5.43 ± 0.46	0.346
Spleen	0.28 ± 0.07	0.29 ± 0.07	0.34 ± 0.04	0.174
Bursa of Fabricius	0.36 ± 0.12	0.31 ± 0.05	0.40 ± 0.15	0.410
Day 28
Liver	2.28 ± 0.37	2.34 ± 0.33	2.29 ± 0.36	0.957
Spleen	0.11 ± 0.02b	0.15 ± 0.04a	0.11 ± 0.02b	0.019
Bursa of Fabricius	0.09 ± 0.02	0.13 ± 0.05	0.12 ± 0.03	0.152

^a,bMeans within a row lacking a common superscripts differ (P < 0.05).

Abbreviations: Antibiotic, diets supplemented with virginiamycin at 30 mg/kg; Bursa of Fabricius, bursa of Fabricius index; Control, basal diets; Glucose oxidase, diets supplemented with glucose oxidase(1,000 U/g) at 200 U/kg; Liver, liver index; Spleen, spleen index; mean values ± SE.