Table 2.

Effect of experimental parameters on operational taxonomic unit richness and diversity at 97% similarity after rarefaction

Treatment1	Shannon2	Shannon Error	chao13	chao1 Error
CON	6.256	0.155	579.4	119.8
50 H UIP	6.335	0.073	604.3	111.3
150 H UIP	6.298	0.13	630.7	142.1
50 L UIP	6.288	0.12	603.7	125.9
150 L UIP	6.344	0.108	640.2	127.1
Fraction
L	6.323	0.118	641.6	135.0
S	6.285	0.128	581.6	111.8
Hour
0.0	5.490	0.102	646.0	126.7
4.0	5.466	0.095	577.3	118.9
Sub-species
Bos taurus	5.488	0.101	615.8	125.6
Bos indicus	5.469	0.096	607.4	129.3

¹CON = supplemented, 50 H DIP = 50 mg N/kg BW 69.5% wheat middling, 30% soybean meal, and 0.5% urea, 150 H DIP = 150 mg N/kg BW 69.5% wheat middling, 30% soybean meal, and 0.5%, 50 L DIP = 50 mg N/kg BW 100% distillers’ grains, 150 L DIP = 150 mg N/kg BW 100% distillers’ grains.

²Shannon = diversity indices as calculated by Shannon and Weaver, 1949.

³chao1 = species richness as calculated by Chao et al., 2013.