TABLE 3.

Selected archaeal families in cecal digesta of pigs fed diets with or without phytase and lactic acid treatment of cereals^a

Family	Mean % relative abundance under indicated grain treatment conditions				SEM	P value
	No phytase		Phytase
	Con	LA	Con	LA		Phytase	LA	Phytase × LA
Thermococcaceae	6.10	6.43	6.84	6.61	0.182	0.019	0.775	0.133
Methanomicrobiaceae	4.36 b	4.94 a	4.77 ab	4.56 ab	0.176	0.923	0.304	0.031
Archaeoglobaceae	2.46	2.66	2.80	2.72	0.087	0.030	0.504	0.113
Methanosaetaceae	1.48	1.45	1.68	1.57	0.072	0.036	0.300	0.602
Methanopyraceae	0.493 b	0.569 a	0.509 b	0.463 b	0.022	0.050	0.501	0.009
Thermofilaceae	0.394	0.401	0.470	0.462	0.023	0.007	0.980	0.753
Picrophilaceae	0.331	0.312	0.417	0.399	0.032	0.012	0.568	0.974
Unclassified Korarchaeota	0.326	0.302	0.372	0.368	0.017	0.003	0.405	0.557
Acidilobaceae	0.074 c	0.106 a	0.103 a	0.073 b	0.009	0.894	0.904	0.002
Unclassified Nanoarchaeota	0.033	0.027	0.041	0.039	0.004	0.043	0.382	0.665

^aValues are presented as least-square means ± SEM (n = 8 pigs per dietary treatment). Different lowercase letters (a, b, and c) in cell entries within a row indicate a significant difference (P ≤ 0.05). Con, control; LA, lactic acid-treated cereals. Only archaeal families that showed relative abundances of >0.05% of all reads and whose results were significantly different (P ≤ 0.05) or tended to be different (P ≤ 0.10) among treatments are presented.