Figure 3: Enterococci in feces of cows supplemented with 400g (week 0-4) or 200g (week 5-10) of 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).