Table 4.

Effects of environment and LP on the duodenal morphology of chickens after CP administration

	Villus height (μm)			Crypt depth (μm)			V/C
	1st day	3rd day	10th day	1st day	3rd day	10th day	1st day	3rd day	10th day
SPFC	954.42	961.49	1001.87	121.52	100.05	107..79	8.56	10.25	9.75
SPFL	1111.29	1017.62	1011.33	85.53	100.26	99.47	13.71	10.62	10.80
FRC	822.79	1007.14	971.91	112.48	145.04	109.76	7.72	7.48	9.25
FRL	1012.06	1067.21	1061.76	115.21	128.37	85.19	9.15	8.92	13.25
SEM	13.059	11.228	9.662	1.950	2.097	1.514	0.244	0.179	0.170
Main effects
Environment
SPF	1036.66	983.39	1006.57	102.65	100.13	103.65	11.26	10.39	10.27
FRS	926.03	1040.66	1010.42	113.97	135.74	99.23	8.50	8.28	10.96
Lactobacillus
NLP	895.26	981.96	986.99	117.46	120.23	108.77	8.18	9.01	9.50
LP	1064.59	1048.17	1032.94	99.49	117.57	93.35	11.57	9.57	11.85
P-value
Environment	0.000	0.035	0.597	0.009	0.000	0.043	0.000	0.000	0.005
Lactobacillus	0.000	0.010	0.011	0.000	0.051	0.000	0.000	0.012	0.000
Environment × Lactobacillus	0.536	0.930	0.038	0.000	0.045	0.008	0.000	0.135	0.000

V/C represented the ratio of the height of the villi to the depth of the crypt, the same as the table below