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Two experiments were carried out to investigate the effects of dietary enzymes and probiotics on growth performance, nutrient digestibility and ammonia gas emission in weanling pigs. In Experiment 1, weanling pigs were fed 0.35% available phosphorus(AP) diets containing either no supplemental probiotics(C) or 0.1% multi-probiotics(P), Photoplus^ⓡ and 0.18% AP diets containing 0.1%(E1) or 0.2%(E2) multi-enzymes, Phytezyme^ⓡ. Each treatment consisted of four replicates with three weaned pigs. In Experiment 2, weanling pigs were fed 0.35% AP diets with multi-enzymes, Phytezyme^ⓡ at 0(C), 0.1%(EZ1) or 0.2%(EZ2) levels. Each treatment consisted of four replicates with three weaned pigs. In Experiment 1, pigs fed diets C or P showed significantly higher(P$lt;0.05) weight gain and feed intake than those fed other diets. E1 and E2 had higher F/G. There were no differences in digestibilities of dry matter, crude fiber and NFE among treatments. Supplemental multi-enzymes (E1 and E2) increased digestibility of crude fat and crude ash and decreased the utilization of phosphorus due probably to low AP level in the diets. Ammonia gas emission was slightly low in P treatment although there were no significant differences among treatments. In Experiment 2, EZ2 showed highest growth rate and feed intake among treatments but the differences were not significant. Nutrient digestibilities of diets were not affected by dietary treatments. Ammonia gas emission was slightly lower in treatment EZ2 although the difference was not significant. In conclusion, supplemental multi-enzymes and probiotics tended to improve the performance of weanling pig and decrease ammonia gas emission.
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