. 2022 Mar 24;9:802051. doi: 10.3389/fvets.2022.802051

Table 6.

Effects of CAT on intestinal morphology of yellow broilers.

Items	Duodenum			Jejunum			Ileum
	Villous height/μm	Crypt depth/μm	Villous height/crypt depth	Villous height/μm	Crypt depth/μm	Villous height/crypt depth	Villous height/μm	Crypt depth/μm	Villous height/crypt depth
30d
CON	1,078.73 ± 173.30^b	148.76 ± 28.17^a	7.46 ± 1.72^b	814.71 ± 41.87^b	135.79 ± 25.58^a	6.19 ± 1.21^b	620.03 ± 41.26^b	121.00 ± 17.85^a	5.21 ± 0.74^b
R1	1,259.76 ± 136.30^a	106.53 ± 16.41^b	12.1 ± 2.44^a	969.73 ± 58.93^a	93.21 ± 9.92^b	10.06 ± 0.75^a	707.88 ± 32.53^a	91.15 ± 24.69^b	8.20 ± 1.95^a
R2	1,301.29 ± 65.09^a	104.66 ± 18.56^b	12.77 ± 2.33^a	933.25 ± 65.53^a	85.14 ± 21.27^b	12.33 ± 4.44^a	719.67 ± 33.07^a	83.20 ± 15.14^b	8.91 ± 1.70^a
60 days
CON	1,409.31 ± 83.85^a	211.68 ± 28.28^a	6.74 ± 0.80^c	758.50 ± 42.89^b	164.95 ± 43.08	4.89 ± 1.33^b	832.47 ± 77.48	141.07 ± 32.12^a	6.21 ± 1.60^b
R1	1,587.57 ± 115.14^b	175.50 ± 47.54^b	9.60 ± 2.39^a	1,086.34 ± 42.56^a	156.06 ± 17.06	7.04 ± 0.84^a	879.54 ± 38.84	133.21 ± 37.30^ab	7.29 ± 2.90^ab
R2	1,542.84 ± 103.74^b	121.91 ± 16.20^c	12.79 ± 1.36^a	1,098.19 ± 70.71^a	150.31 ± 20.54	7.48 ± 1.44^a	863.99 ± 32.06	102.13 ± 21.54^b	8.80 ± 1.88^a

Data are the mean ± SEM (n = 8). CON-broilers fed the basal diet, R1-broilers fed the basal diet supplemented with 150 U/kg of CAT, R2-broilers fed the basal diet supplemented with 200 U/kg of CAT.

^a,b,c

Values within the same period and the same column with different letters differ (p < 0.05).