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首页> 外文期刊>British Poultry Science >The effects of exogenous xylanase supplementation on thein vivogeneration of xylooligosaccharides and monosaccharides in broilers fed a wheat-based diet
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The effects of exogenous xylanase supplementation on thein vivogeneration of xylooligosaccharides and monosaccharides in broilers fed a wheat-based diet

机译：外源木聚糖酶补充对肉鸡木瓜糖苷和单糖素的影响喂养小麦饮食

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1. This study quantified xylanase-induced changes in soluble monosaccharides, xylooligosaccharides (XOS) and volatile fatty acid (VFA) contents of the different sections of the gastrointestinal tract (GIT) and whether these were related to altered bird performance. 2. Anin vitrodigestion of the wheat-based diet was carried out with the xylanase (Econase XT at 16,000BXU/kg diet) to compare thein vitroandin vivogeneration of these XOS and monosaccharides. For thein vivostudy, 80 male Ross 508 b roiler chicks were split into two groups fed a wheat-based diet with or without Econase XT (16,000BXU/kg diet) for 21 days. 3. There were no effects of Econase XT inclusion on growth performance characteristics, likely a result of the high-quality wheat diet, the corresponding high performance of the control group (FCR average of 1.45 in controls) and the relatively young age of the birds (from four to 26 days of age). 4. Econase XT supplementation increased the xylotetraose (X-4) content in the colon (P = 0.046, enzyme x GIT section interaction) and the xylose contents in the colon and caeca (P < 0.001, enzyme x GIT section interaction). 5. The trend for increased acetate production in the caeca of Econase XT treated birds (P = 0.062) suggested that the XOS generated were subsequently fermented in the caeca, potentially impacting upon the types of microbiota present. 6. The present study suggested that wheat arabinoxylan degradation was enhanced by xylanase supplementation, which may have increased the production of beneficial volatile fatty acids (VFA) in the caeca, and thereby potentially modulated the caecal microbiome, but without affecting bird performance at this early age.
机译：本研究定量了木聚糖酶诱导的胃肠道（GIT）的不同段的可溶性单糖，木龙糖（XOS）和挥发性脂肪酸（VFA）含量的变化，以及这些是否与鸟类性能改变有关。 2.用木聚糖酶（12,000bxu / kg饮食以16,000bxu / kg饮食）进行小麦饮食的vitrodigestion，以比较这些xos和单糖的vitroandin vivogenerabers。对于VivoStudy，80只雄性罗斯508b roiler小鸡被分成两组，用或没有生态酶xt（16,000bxu / kg饮食）喂养小麦的饮食21天。 3.生态酶XT夹杂物对生长性能特征没有影响，可能是高质量小麦饮食的结果，对照组的相应高性能（FCR平均对照组1.45）和相对年轻的鸟类（从四到26天）。 4.生态酶XT补充在结肠中的二氧化四糖（X-4）含量增加（P = 0.046，酶X git截面相互作用）和结肠和CAECA中的木糖含量（P <0.001，酶X Git截面相互作用）。 5.生态酶XT处理鸟类的CAECA中醋酸盐产生增加的趋势（p = 0.062）表明，随后在CAECA中发酵产生的XO，潜在地影响存在的微生物群类型。本研究表明，木聚糖酶补充剂增强了小麦阿拉伯辛氧基降解，这可能增加了CAECA中有益挥发性脂肪酸（VFA）的产生，从而可能调节粘颈微生物组，但在此早期不会影响鸟类性能年龄。

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