In the first 2 weeks after weaning, the piglets' digestive system cannot efficiently digest the new diet with vegetal ingredients. This study evaluated the effects of multicarbohydrase – MC (700 U α-galactosidase, 2200 U galactomannanase, 3000 U xylanase and 22 000 U β-glucanase per kilogram of diet), and phytase – Phy (500 phytase units – FTU/kg of diet) supplementation on the nutritive value of rice bran (RB) in weaned piglets. Twenty-five weaned piglets, 21 days old, were individually caged to determine the apparent digestibility of dry matter (DM), crude protein (CP), ash, digestible (DE), metabolisable (ME) energy, methane production, as well as apparent (AID) and standardised (SID) ileal amino acid digestibility in RB. Treatments were applied in a completely randomised experimental design with a 2 × 2 (0 and 200 mg/kg MC; 0 and 50 mg/kg Phy) factorial arrangement. An additional group of five piglets was fed a corn-basal diet (BD) during apparent digestibility evaluation of nutrients and a 5% casein-corn starch basal (BD₁) diet during apparent and standardised ileal digestibility (SID) of amino acid evaluation. Ileal digesta were collected at slaughtering (38 days old). Test diets were made by mixing the basal diets and RB 7: 3 (w/w), with or without MC, Phy-or the combination. There was a positive interaction (P < 0.05) between MC and Phy-in the balance of CP and energy. An effect of Phy (P < 0.05) was observed on DM, CP and ash digestibility, whereas MC only improved N retention (P < 0.05). The pronounced effect of Phy-on ash digestibility of RB confirmed what was expected; however, it had no equivalent effect on amino acid digestibility. Based on literature data, the nutrient balance and digestible energy of RB without enzymes were lower than those using older pigs; AID and SID values for indispensable amino acids were 39 and 17% lower, respectively. The combination MC + Phy-showed an effect (P < 0.05) on Ile, Leu, Thr, Trp-and Val-digestibility. Isolated or combined, the enzymes increased the AID and SID averages of all amino acids in RB (P < 0.05). Enzyme combination provided a positive synergy for energy and protein digestibility of RB. The MC + Phy-RB test diet produced less methane, followed by Phy-and MC diets.

断奶后的前两周，仔猪的消化系统无法有效地消化含有植物成分的新饲料。这项研究评估了多糖酶– MC（每公斤日粮700 Uα-半乳糖苷酶，2200 U半乳糖甘露聚糖酶，3000 U木聚糖酶和22000 Uβ-葡聚糖酶）和植酸酶– Phy（500植酸酶单位– FTU / kg日粮）的影响）补充断奶仔猪的米糠（RB）的营养价值。分别圈养21天大的25只断奶仔猪，以确定其干物质（DM），粗蛋白（CP），灰分，可消化（DE），可代谢（ME）能量，甲烷产生以及表观消化率。 RB中的表观（AID）和标准化（SID）回肠氨基酸消化率。在完全随机的实验设计中采用2×2（0和200 mg / kg MC; 0和50 mg / kg Phy）析因排列。在对营养物的表观消化率进行评估的过程中，另外五只仔猪饲喂玉米基础日粮（BD）和5％酪蛋白-玉米淀粉基础（BD）₁）饮食过程中表观和标准化回肠消化率（SID）的氨基酸评估。宰杀（38天大）时收集回肠消化物。通过将基础饮食与RB 7：3（w / w）混合，并添加或不添加MC，Phy或两者的组合来制作测试膳食。在CP和能量的平衡中，MC和Phy之间存在正相互作用（P < 0.05）。Phy对DM，CP和灰分消化率的影响（P < 0.05），而MC仅改善了氮的保留（P < 0.05）。Phy-on对RB灰分消化率的显着影响证实了预期。但是，它对氨基酸的消化率没有同等的影响。根据文献数据，不使用酶的RB的营养平衡和可消化能量低于使用年长猪的RB。必需氨基酸的AID和SID值分别降低39％和17％。MC + Phy组合对Ile，Leu，Thr，Trp-和Val消化率有影响（P < 0.05）。分离或组合后，这些酶增加了RB中所有氨基酸的AID和SID平均值（P < 0.05）。酶组合为RB的能量和蛋白质消化率提供了积极的协同作用。MC + Phy-RB测试饮食产生的甲烷较少，其次是Phy-MC饮食。