The digestive system of the weaned piglets can be affected by the type of ingredients present in the diet, and a high fibre content in diets can limit the use of other nutrients and energy. The study was conducted to determine the effects of multicarbohydrase (MC) and phytase (Phy) supplementation on the nutritive value of wheat bran (WB) in weaned piglets. Multicarbohydrase preparation had 700 U α-galactosidase, 2200 U galactomannanase, 3000 U xylanase and 22 000 U β-glucanase per kilogram of diet, and Phy had 500 phytase units - FTU/kg of diet. Twenty-five weaned piglets (6.1 ± 0.63 kg) at 21 days old were fed five diets in a completely randomised experimental design with a 2 × 2 + 1 (0 and 200 mg/kg MC; 0 and 50 mg/kg Phy; and basal diet - BD) factorial arrangement used to determine treatment effects. An additional group of piglets was fed a corn-basal diet during apparent digestibility of nutrients, and fed a 5% casein-corn starch basal diet during apparent and standardised ileal digestibility (SID) of amino acid evaluations. Piglets were individually caged until 38 days old, when Ileal digesta was collected at slaughter. Test diets were made by mixing the basal diets and WB 7 : 3 (w/w), with or without MC, Phy or the combination. There was an interaction trend (P = 0.07) between MC and Phy in the balance of ash, digestible energy (DE) and metabolisable energy (ME). Effects of MC (P < 0.01) on DM, N retention, DE and ME, as well as an effect of Phy (P < 0.05) on ash, DE and ME and a trend in protein digestibility (P = 0.07) also was observed. The enzyme combination showed effect (P < 0.05) on SID of Lys, Pro and Ser; as a trend (P < 0.07) on His, Thr and Val. Isolated, MC also suggested improving (P < 0.07) on SID of His, Lys, Ala (P < 0.05), while Phy improved (P < 0.06) SID of Leu, Lys, Met (P < 0.01), Thr, Val, Ala (P < 0.01), Pro and Ser (P < 0.05). The MC carbohydrate complex was characterised as a viable alternative to increase the apparent nutrients digestibility and SID of amino acids when WB was used in the diet of young pigs and, when combined with Phy, suggested an additive effect on the apparent use of energy.

中文翻译：

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饲喂麦麸和外源酶组合的断奶仔猪的营养和能量平衡以及氨基酸消化率。

断奶仔猪的消化系统会受到日粮中成分类型的影响，日粮中高纤维含量会限制其他营养素和能量的使用。本研究旨在确定补充多糖酶 (MC) 和植酸酶 (Phy) 对断奶仔猪麦麸 (WB) 营养价值的影响。多糖酶制剂每公斤饮食含有 700 U α-半乳糖苷酶、2200 U 半乳甘露聚糖酶、3000 U 木聚糖酶和 22 000 U β-葡聚糖酶，Phy 有 500 个植酸酶单位 - FTU/kg 饮食。25 头 21 日龄断奶仔猪 (6.1 ± 0.63 kg) 在完全随机的实验设计中饲喂五种日粮，其中 2 × 2 + 1（0 和 200 mg/kg MC；0 和 50 mg/kg Phy；和基础饮食 - BD) 用于确定治疗效果的因子排列。另一组仔猪在营养物质的表观消化率期间饲喂玉米基础日粮，并在氨基酸的表观和标准化回肠消化率 (SID) 评估期间饲喂 5% 酪蛋白-玉米淀粉基础日粮。仔猪被单独关在笼子里直到 38 天大，此时在屠宰时收集回肠食糜。通过混合基础日粮和 WB 7 : 3 (w/w) 制备测试日粮，有或没有 MC、Phy 或组合。在灰分、消化能（DE）和代谢能（ME）的平衡中，MC和Phy之间存在相互作用趋势（P = 0.07）。还观察到 MC (P < 0.01) 对 DM、N 保留、DE 和 ME 的影响，以及 Phy (P < 0.05) 对灰分、DE 和 ME 的影响以及蛋白质消化率的趋势 (P = 0.07) . 酶组合对Lys、Pro和Ser的SID有影响（P < 0.05）；作为 His、Thr 和 Val 的趋势 (P < 0.07)。孤立地，MC 还建议改善 (P < 0.07) His、Lys、Ala (P < 0.05) 的 SID，而 Phy 改善 (P < 0.06) Leu、Lys、Met (P < 0.01)、Thr、Val、 Ala (P < 0.01)、Pro 和 Ser (P < 0.05)。当 WB 用于幼猪日粮时，MC 碳水化合物复合物被认为是增加表观营养物质消化率和氨基酸 SID 的可行替代品，并且当与 Phy 结合使用时，表明对能量的表观使用具有累加效应。