TABLE 4.

Alpha-diversity indices in cecal digesta of pigs fed diets with or without phytase and lactic acid treatment of cereals^a

Parameter	Value under indicated grain treatment conditions				SEM	P value
	No phytase		Phytase
	Con	LA	Con	LA		Phytase	LA	Phytase × LA
No. of species (species richness)	1,535	1,536	1,535	1,533	1.67	0.341	0.658	0.341
Simpson index	0.977	0.967	0.982	0.981	0.003	0.006	0.120	0.183
Shannon index	5.11	4.90	5.20	5.16	0.065	0.013	0.062	0.205

^aValues are presented as least-square means ± SEM (n = 8 pigs per dietary treatment). Con, control diet; LA, diet containing lactic acid-treated cereals.