Probios contains is a source of live (viable), naturally occurring microorganisms to help maintain normal digestive function during times of stress from illness, weaning or diet changes. Can be blended with feed rations or top dressed. Feed grade product made to be blended with rations for beef, dairy, swine, sheep, goats and horses. For starting calves, feed 1 lb. per 9 head for 3 days running or 1 lb. per 15 head for 5 days to meet 150 gm dose requirement. (Two lbs. of 180R is equivalent to one ton pack). Feed 5 gm per head per day for horses and foals.