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

Table 1.

Laying performance of yellow-feathered breeder hens.

	CL	CBH	CBL	SB	BAG	SEM	Value of p
Laying rate, %	50.82^b	57.10^a	56.24^a	54.65^ab	58.61^a	0.90	0.021
Daily egg mass, g	30.60^b	34.75^a	33.81^ab	32.89^ab	34.68^a	0.53	0.041
Average egg weight, g	60.90	61.70	60.73	60.71	60.09	0.58	0.841
Qualified rate of egg, %	94.68	97.31	96.27	93.97	96.57	0.45	0.111
Feed/egg	3.50^a	3.05^b	3.15^b	3.24^ab	3.06^b	0.05	0.039

^ab

Means 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.