methanogen community structure in the rumens of farmed sheep, cattle and red deer fed different diets.development of inhibitors and vaccines that mitigate rumen-derived methane by targeting methanogens relies on knowledge of the methanogens present. we investigated the composition of archaeal communities in the rumens of farmed sheep (ovis aries), cattle (bos taurus) and red deer (cervus elaphus) using denaturing gradient gel electrophoresis (dgge) to generate fingerprints of archaeal 16s rrna genes. the total archaeal communities were relatively constant across species and diets, and were less ...201121255054
methanobrevibacter millerae sp. nov. and methanobrevibacter olleyae sp. nov., methanogens from the ovine and bovine rumen that can utilize formate for growth.four formate-utilizing methanogens were isolated from ovine (strain km1h5-1p(t)) and bovine (strains ak-87, ocp and za-10(t)) rumen contents. based on 16s rrna gene sequence analysis, the methanogen strains were found to belong to the order methanobacteriales in the genus methanobrevibacter. strains za-10(t) and km1h5-1p(t) gained energy for growth by the reduction of co(2) to ch(4) using h(2) or formate exclusively as electron donors. increasing formate concentrations to 220 mm in batch culture ...200717329767
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