SRS9455565 SAMN20172561 749906 gut metagenome bioproject 745939 PRJNA745939 strain Not applicable isolate Not applicable breed Not applicable cultivar Not applicable ecotype Not applicable age 10 weeks sex male tissue Feces BioSampleModel Model organism or animal SRS9455566 SAMN20172562 749906 gut metagenome bioproject 745939 PRJNA745939 strain Not applicable isolate Not applicable breed Not applicable cultivar Not applicable ecotype Not applicable age 90 weeks sex male tissue Feces BioSampleModel Model organism or animal