The Sept. 2007 EquCab2 release of the horse genome is now available in the University of California, Santa Cruz, Genome Browser. The assembly was produced by the Broad Institute.
The horse draft genome has been sequenced to 6.8X coverage. Approximately 84 percent of the sequence has been anchored to chromosomes, which include autosomes 1-31 and sex chromosome X, UCSC said. Unanchored contigs that could not be localized to a chromosome have been concatenated into the virtual chromosome "chrUn," separated by gaps of 1,000 bp. The mitochondrial sequence is also available in the Genome Browser as the virtual chromosome "chrM."
More details about the current assembly are available on the Broad Institute’s Horse Genome Project website here. Bulk downloads of the sequence and annotation data are available from the Genome Browser FTP server and downloads page.