TABLE 1.

Effects of breed and RFI on the alpha diversity indices of rumen eukaryotic communities.

Items	Breed1			RFI2		SEM	P-value
	AN	CH	KC	High	Low		Breed	RFI	Breed × RFI
Pielou’s evenness	0.78	0.79	0.76	0.77	0.78	0.01	0.09	0.32	0.65
Faith’s PD	137	126	143	124b	147a	5	0.24	<0.01	0.06
Observed OTUs	1,937	2,106	2,287	1,921b	2,299a	73	0.11	<0.01	0.21
Shannon index	8.60	8.58	8.49	8.40b	8.72a	0.07	0.75	0.02	0.37

¹AN, CH, and KC represent Angus, Charolais, and Kinsella Composite steers, respectively. ²OTUs, operational taxonomic units; PD, phylogenetic diversity; RFI, residual feed intake; values within each row with different superscripts are different.