Table 2.

P values related to alpha diversity measures in fecal samples based on pregnancy status^a

	Comparison		P value
Shannon index	1 Bred	1 Open	0.4945
	2 Bred	2 Open	0.3519
	1 Bred	2 Bred	0.4773
	1 Open	2 Open	0.5249
Observed OTUs	1 Bred	1 Open	0.6073
	2 Bred	2 Open	0.8361
	1 Bred	2 Bred	0.085
	1 Open	2 Open	0.3084

^* Pair-wise comparisons between stage and pregnancy status were determined to be statistically significant at P < 0.05

^a Fecal samples were obtained from 32 beef heifers. Individuals that established a pregnancy (n = 16) and those that did not (n = 16) were sampled before breeding (stage 1) and during the first trimester (stage 2)