. 2021 Sep 16;12:657542. doi: 10.3389/fmicb.2021.657542

Table 6.

Intestinal pH and morphology of yellow-feathered breeder hens.

	CL	CBH	CBL	SB	BAG	SEM	Value of p
pH
Duodenum	6.32	6.22	6.33	6.38	6.35	0.03	0.601
Jejunum	6.34	6.31	6.21	6.29	6.31	0.02	0.522
Ileum	6.66	6.72	6.61	6.65	6.55	0.03	0.249
Morphology of jejunum
Villus height, mm	0.91^b	1.24^a	1.08^a	0.92^b	1.11^a	0.02	0.026
Crypt depth, mm	0.14^b	0.25^a	0.17^b	0.18^b	0.21^a	0.01	0.043
Villous crypt ratio	5.35^b	7.56^a	6.67^a	5.08^b	5.49^b	0.18	0.016

^abMeans within a row lacking a common superscript differ significantly (p<0.05).

CL, control; CBL, low-level Clostridium butyricum; CBH, high-level Clostridium butyricum; SB, sodium butyrate; BAG, butyric acid glycerides; and SEM, standard error.