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首页> 外文期刊>Poultry Science >Impact of a multicarbohydrase containing alpha-galactosidase and xylanase on ileal digestible energy, crude protein digestibility, and ileal amino acid digestibility in broiler chickens
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Impact of a multicarbohydrase containing alpha-galactosidase and xylanase on ileal digestible energy, crude protein digestibility, and ileal amino acid digestibility in broiler chickens

机译：含有α-半乳糖苷酶和木聚糖酶对肉鸡鸡的髂骨可消化能量，粗蛋白质消化率和髂氨基酸消化率的影响

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Exogenous enzymatic supplementation of poultry feeds, including alpha-galactosidase and xylanase, has been shown to increase metabolically available energy, although little information has been published on the impact on amino acid digestibility. An experiment was conducted to investigate a multicarbohydrase containing alpha-galactosidase and xylanase on amino acid digestibility, ileal digestible energy (IDE), and CP in male broiler chicks. The experiment was a 2 x 2 (diet x enzyme) factorial arrangement with 15 replicates of 8 male broilers per replicate raised for 21 d in a battery setting. The 2 dietary treatments included a positive control (PC) and a negative control (NC) diet formulated to contain 2.5% less calculated AME and digestible amino acids. Each of these diets was fed with and without enzyme. Broilers were fed a starter diet from 0-14 d (crumble) and a grower from 14-21 d (pellet). Birds were sampled on day 21 to determine ileal amino acid digestibility, IDE, and CP digestibility. Titanium dioxide (TiO2) was used as an indigestible marker for the determi nation of digestibility coefficients. Total ileal amino acid digestibility was increased (P = 0.008) by 3.80% with the inclusion of enzyme. Methionine and lysine digestibility was improved (P & 0.05) with the inclusion of enzyme by 3.37% and 2.61%, respectively. Enzyme inclusion increased (P = 0.001) cysteine digestibility by 9.3%. Diet-influenced ileal amino acid digestibility with tryptophan, threonine, isoleucine, and valine digestibility being increased (P & 0.05) in the PC when compared to the NC. IDE was decreased (P = 0.037) in broilers fed the NC diet by 100 kcal/kg feed when compared to broilers fed the PC diet. Enzyme inclusion increased (P = 0.047) IDE value by 90 kcal/kg. Crude protein digestibility was not influenced by diet; however, similar improvements in CP digestibility with enzyme inclusion were observed as with energy. These data support the benefits of a multicarbohydrase containing alpha-galactosidase and xylanase inclusion to improve nutrient and ileal amino acid digestibility across multiple dietary nutrient profiles.
机译：已经显示出外源性酶补充，包括α-半乳糖苷酶和木聚糖酶，但已经增加了代谢可获得的能量，尽管已经发表了对氨基酸消化率的影响很少的信息。进行实验以研究含有α-半乳糖苷酶和木聚糖酶的多糖氢酶对氨基酸消化率，髂骨可消化能量（IDE）和CP的氨基酸消化物。该实验是2×2（饮食X酶）因子排列，在电池设置中为21天升高了15个雄性肉鸡的15次重复。 2个膳食处理包括阳性对照（PC）和配制的阴性对照（NC）饮食，其含有2.5％的计算ame和可消化的氨基酸。这些饮食中的每一个都被喂食，没有酶。肉鸡从0-14d（碎片）和从14-21d（颗粒）的种植者喂食起始饮食。在第21天进行采样鸟类以确定髂氨基酸消化率，IDE和CP消化率。二氧化钛（TiO 2）用作消化系数的确定性的难析标记。包含酶，将总eLEAL氨基酸消化率增加（p = 0.008）增加3.80％。甲硫氨酸和赖氨酸消化率得到改善（P＆amp; LT; 0.05），分别包含3.37％和2.61％。酶包涵体增加（p = 0.001）半胱氨酸消化率为9.3％。与NC相比，饮食影响了用色氨酸，苏氨酸，异亮氨酸和缬氨酸消化率和缬氨酸消化率增加（p＆amp; 0.05）。与喂食PC饮食的肉鸡相比，在将NC饮食的肉鸡饲喂NC饮食的肉鸡中减少（p = 0.037）。酶包含增加（p = 0.047）IDE值90 kcal / kg。粗蛋白质消化率不受饮食的影响;然而，与能量相似地观察到具有酶包含的CP消化率的类似改善。这些数据支持含有α-半乳糖苷酶和木聚糖酶包合物的多糖氢酶的益处，以改善多种膳食营养型材的营养和ILEAL氨基酸消化率。

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