We are working on a postbiotic preparation to see its effect on rumen health. We need a few aerobic or facultative bacteria which can be used in viable count. Even if we use a selective agar, the target bacterium can't be excluded from other few organisms which will also grown on the agar plate. So what should be target bacterium and the modification of the viable count protocol? We don't have anaerobic bacterial culture facility, so have to rely on some aerobic or facultative anaerobe which we can grown in our lab in routine aerobic incubators.