TABLE 4.

Effect of each treatment^a on intestinal morphology of Zhijiang ducks^b (1 28 days).

Item	Group I	Group II	Group III	Group IV	SEM	P-value
Duodenum
Villus height, μm	577.45	590.31	598.00	610.14	12.455	0.835
Crypt depth, μm	130.20	122.07	121.67	129.11	2.376	0.452
V/C	4.45	4.86	4.98	4.77	0.113	0.394
Intestinal wall thickness, μm	193.62	185.93	188.24	196.25	3.886	0.785
Jejunum
Villus height, μm	582.71	586.32	606.55	602.88	11.677	0.866
Crypt depth, μm	129.62	122.12	117.19	125.40	2.392	0.314
V/C	4.53	4.88	5.23	4.85	0.124	0.256
Intestinal wall thickness, μm	192.18	190.62	176.98	184.00	3.161	0.313
Ileum
Villus height, μm	544.05	554.70	562.82	537.81	8.685	0.761
Crypt depth, μm	123.71	117.50	121.86	120.09	2.201	0.794
V/C	4.42	4.76	4.65	4.51	0.073	0.356
Intestinal wall thickness, μm	192.30	182.38	183.14	182.94	3.292	0.684

V/C, the ratios of villus height to crypt depth.

^aGroup I (control group), Group II (150 mg/kg NSPases in basal diet), Group III (25 mg/kg Bacillus probiotics in basal diet), Group IV (150 mg/kg NSPases + 25 mg/kg Bacillus probiotics in basal diet).

^bData is the mean of 10 replicates per treatment.