Methanogenic archaea diversity in Hanwoo (Bos taurus coreanae) rumen fluid, rectal dung, and barn floor manure using a culture-independent method based on mcrA gene sequences.

The diversity of methanogenic archaea associated with Korean Hanwoo cattle was analyzed using mcrA gene sequences from samples of rumen fluid (RF), rectal dung (RD), and barn floor manure (BFM). The predominant species were Methanobrevibacter ruminantium in RF and BFM(63.6% and 62.4%, respectively) and Methanocorpusculum labreanum in RD (53.2%).