SRS1109044 SAMN04155603 749906 gut metagenome host goat isolation_source environment collection_date missing geo_loc_name missing lat_lon missing Goat number 1 BioSampleModel Metagenome or environmental SRS1109045 SAMN04155604 749906 gut metagenome host goat isolation_source environment collection_date missing geo_loc_name missing lat_lon missing Goat number 2 BioSampleModel Metagenome or environmental