. 2020 Feb 1;99(3):1311–1319. doi: 10.1016/j.psj.2019.11.016

Table 3.

Effects and combinational effects of Bacillus subtilis (BS) and montmorillonite (MMT) on the performance of laying hens during week 1 to week 10 of the experiment.¹^,²^,³

BS (cfu/kg)	0	5 × 10⁸	0	5 × 10⁸	Pooled SEM	P-value
MMT (g/kg)	0	0	0.5	0.5	Pooled SEM	BS	MMT	BS × MMT
Egg production (%)	94.33^b	95.94^a	96.03^a	96.57^a	0.29	0.048	0.026	0.337
Egg mass (g/hen per d)	57.00^b	58.00^a,b	58.40^a	59.15^a	0.24	0.030	0.003	0.747
FCR (g of feed/g of egg)	2.09^a	2.07^a	2.05^a,b	2.03^b	<0.01	0.146	0.005	0.786

^a,bMeans within a row with different superscripts differ significantly (P < 0.05).

These data have been published in the Livest. Sci. (Chen et al., 2019b).

Means represent 6 replicates per treatment, with 15 hens per replicate.

FCR: feed conversion ratio.