. 2019 May 28;10:1131. doi: 10.3389/fmicb.2019.01131

TABLE 1.

Effect of treatment on richness and alpha diversity at 97% similarity after rarefaction to 6,040 sequences per sample for samples collected on weaning day.

	Treatment¹
Item	CON	PCON	ENZ	SE	P-value
Shannon index	10.4^a	10.2^b	10.2^b	0.09	0.04
Simpson index	0.9981	0.9976	0.9976	0.00	0.12
Chao1	7,082^a	6,729^ab	6,626^b	181.00	0.05
PD whole tree²	159.0^a	151.8^b	150.1^b	2.63	0.01
Observed OTUs	2,572^a	2,421^b	2,424^b	55.50	0.02

¹CON = conventional cow-calf system without supplementation of calves. PCON = calves were creep fed. ENZ = calves were creep fed with an enhanced feed containing xylanase; ²Faith’s Phylogenetic Diversity. ^a,bMeans within a row with different superscripts differ (P ≤ 0.05) according to Fisher’s Least Significance Difference method.