TABLE 1.

16S rRNA clones from pooled samples from 10 corn-fed feedlot cattle from Ontario, Canada

16S rRNA phylotype	No. of clonesa	Size (bp)	GenBank accession no.	Nearest valid taxon	% Sequence similarity
ON-CAN.01	47	1,260	DQ123873	Methanobrevibacter ruminantium	98.8
ON-CAN.02	25	1,256	DQ123874	Thermoplasma volcanium	74.7
ON-CAN.03	16	1,256	DQ123875	Thermoplasma acidophilum	75.3
ON-CAN.04	14	1,260	DQ123876	Methanobrevibacter ruminantium	100.0
ON-CAN.05	12	1,258	DQ123877	Methanimicrococcus blatticola	89.8
ON-CAN.08	2	1,262	DQ123878	Methanobrevibacter thaueri	98.4
ON-CAN.09	2	1,257	DQ123879	Thermoplasma volcanium	74.5
ON-CAN.10	1	1,262	DQ123880	Methanobrevibacter smithii	100.0
ON-CAN.11	1	1,260	DQ123881	Methanobrevibacter thaueri	98.5
ON-CAN.12	1	1,261	DQ123882	Methanobrevibacter thaueri	98.1
ON-CAN.13	1	1,265	DQ123883	Methanosphaera stadtmanae	95.8
ON-CAN.14	1	1,256	DQ123884	Thermoplasma acidophilum	75.6
ON-CAN.15	1	1,256	DQ123885	Thermoplasma acidophilum	75.4
ON-CAN.16	1	1,256	DQ123886	Thermoplasma acidophilum	75.5
ON-CAN.17	1	1,256	DQ123887	Thermoplasma volcanium	74.5
ON-CAN.18	1	1,256	DQ123888	Thermoplasma acidophilum	75.2

^aA total of 127 clones were examined.