Figure 1: Total aerobe counts in feces of cows supplemented with 400g (week 0-4) or 200g (week 5-10) charcoal/d, 200g charcoal plus 500mL sauerkraut juice/d (week 11-14), 120g humic acid/d (week 15-18), 200g charcoal plus 100ml Aqua humin (week 19-20), 100g charcoal plus 50 mL Aqua humin (week 21-22), and without supplementation (week 23-26). *** P< 0.001, ** P<0.01, (N= 40)