TABLE 6.

Effect of dietary supplementation of Bacillus subtilis ATCC19659 on cecal microbiota communities of broilers by alpha diversity measures.

Items	Treatmentsa					SEM	p-value
	CON	ZnB	BS-1	BS-3	BS-5
Observed OTU	486.50	521.67	507.67	519.33	476.50	16.689	0.901
Chao1	525.62	558.98	555.19	557.43	506.12	18.687	0.881
Shannon	6.62	6.98	6.75	6.97	6.83	0.085	0.661
Simpson	0.97	0.98	0.97	0.98	0.98	0.003	0.618
Goods coverage	1	1	1	1	1	0.001	0.947

^aCON, chicks were fed a corn-and soybean-based diet; ZnB, chicks were fed basal diet containing 500 mg ZnB/kg; BS-1, chicks were fed basal diet containing 1 × 10⁸ CFU/g feed of BS-ATCC19659; BS-3, chicks were fed basal diet containing 3 × 10⁸ CFU/g feed of BS-ATCC19659; BS-5, chicks were fed basal diet containing 5 × 10⁸ CFU/g feed of BS-ATCC19659.