This experiment studied effects of a mixture of exogenous enzymes
(ZADO®) from anaerobic bacteria on ruminal fermentation, feed
intake, digestibility, as well as milk production and composition
in cows fed total mixed rations (TMRs; 0.7 corn silage and 0.3 of a
concentrate mixture). Twenty lactating multiparous Brown Swiss
cows (500±12.4 kg live weight) were randomly assigned into two
experimental groups of 10 immediately after calving and fed a
TMR with or without (CTRL) addition of 40 g/cow/d of enzymes for
12 weeks. Addition of enzymes increased (P