The aims of this study were to determine the Effects of improve Amaranth meal quality (Amaranthus spinosus L.) by exogenous fibrotic enzyme supplementation or fermentation process on growth performances of native Moo Lath pigs in post weaning – growing period. A total of 32 castrated male native Moo Lath pigs (around 60-days old; initial body weight 9.04 ? 0.99 kg) were randomly allotted to 4 dietary treatments (4 replicate pens of 2 pigs per pen)
in completely randomized design (CRD). Four dietary treatments were T1: Basal diet (Controlgroup), T2: Replacement soybean meal with Amaranth meal 20%, T3: Replacement soybean meal with amaranth meal 20% plus with Hostazym? X Enzyme 0.01 % (w/w) and T4: Replacement soybean meal with Amaranth meal silage 20%. All dietary group were calculated with 17 % crude protein and 3,100 kcal ME/kg. The results found that Moo Lath pigs fed with diet supplementation with Amaranth meal replacement soybean meal plus with enzyme and diet with amaranth meal silage 20% could increase growth performances than Moo Lath pigs fed with control group and diet with amaranth meal 20% (P<0.01) while feed intake were not significantly among treatments (P>0.05).