摘要
In this experiment, three concentrations (0.3, 0.6, and 0.9% of diet, as-fed basis) of two fructans, oligofructose (OF) and inulin, were tested against a 0% supplemental fructan control. Seven ileal-cannulated adult female dogs were fed a meat-based, kibbled diet and assigned to treatments in a 7 × 7 Latin square design. Dietary supplementation of fructans had no effect on nutrient intakes or ileal digestibilities. Total-tract digestibilities of DM, OM, and CP decreased (P < 0.05) as a result of dietary OF and inulin supplementation. Dogs fed the control diet had a DM total-tract digestibility of 83.0%. The percentages of fecal DM for dogs fed the control and 0.3, 0.6, and 0.9% OF were 36.6, 33.3, 32.8, and 31.7%, respectively. When compared with the control, OF (P < 0.01) and inulin (P < 0.01) supplementation increased fecal ammonia concentrations. Higher fecal short-chain fatty acid (SCFA; P < 0.10) and isovalerate concentrations (P < 0.01) were noted for dogs fed both fructans. Total fecal SCFA for dogs fed the control diet and 0.3, 0.6, and 0.9% OF were 406.4, 529.9, 538.3, and 568.8 μmol/g of feces (DM basis), respectively. Dogs fed 0.3, 0.6, and 0.9% inulin had total fecal SCFA of 472.2, 468.8, and 471.5 μmol/g of feces (DM basis), respectively. Linear increases were observed in putrescine (P < 0.11), cadaverine (P < 0.07), spermidine (P < 0.12), and total amines (P < 0.05) in feces of dogs fed OF. Lower fecal phenol (P < 0.08) and total phenol (P < 0.04) concentrations occurred in dogs fed inulin, along with a linear decrease (P < 0.08) in total phenols with OF supplementation. Total fecal phenols for dogs fed the control, 0.3, 0.6, and 0.9% inulin were 3.03, 1.86, 1.97, and 2.23 μmol/g of feces (DM basis), respectively. Low-level dietary inclusion of inulin and OF positively affected indices known to be associated with gut health of the dog without seriously compromising nutrient digestibility or stool quality. Overall, the 0.9% OF treatment resulted in the best responses, including no adverse effect on nutrient intakes, ileal digestibilities, or stool quality, as well as increased fecal SCFA and decreased fecal phenols. The biological responses due to inulin were more variable.
摘要译文
在该实验中，针对0％补充果聚糖对照，测试了两种果聚糖，低聚果糖（OF）和菊糖的三种浓度（0.3％，0.6％和0.9％的饮食，作为喂食基础）。七只回肠插管成年雌性狗饲喂基于肉类的粗磨饮食，并以7×7拉丁方设计分配给治疗。膳食补充果聚糖对营养摄入量或回肠消化率没有影响。 DM，OM和CP的总消化道消化率降低（P 0。05）作为饮食OF和菊粉补充的结果。饲喂对照饮食的狗的DM总消化道消化率为83.0％。饲喂对照的狗的粪便DM的百分比和0.3,0.6，0.9％OF分别为36.6,33.3,32.8和31.7％。与对照相比，OF（P 0.01）和菊粉（P 0.01）补充增加粪氨浓度。对于喂食两种果聚糖的狗，注意到较高的粪便短链脂肪酸（SCFA; P 0.10）和异戊酸浓度（P 0.01）。饲喂对照饮食的狗的总粪便SCFA和0.3,0.6，和0.9％OF分别为406.4,529.9,538.3和568.8μmol/ g粪便（DM基准）。饲喂0.3％，0.6％和0.9％菊糖的狗的总粪便SCFA分别为472.2,468.8和471.5μmol/ g粪便（DM基准），分别。在喂食OF的狗的粪便中观察到腐胺（P 0.11），尸胺（P 0.07），亚精胺（P 0.12）和总胺（P 0.05）的线性增加。较低的粪便酚（P 0。08）和总苯酚（P 0.04）浓度发生在菊糖饲喂的狗中，而随着补充OF的总酚，线性下降（P 0.08）。饲喂对照的0.3,0.6,0.9％菊粉的总粪便酚分别为3.03,1.86,1.97和2.23μmol/ g粪便（DM基准）。低水平饮食中包含菊粉和OF，并且正面影响已知与狗的肠道健康相关的指标，而不严重损害营养物质消化率或粪便质量。总体而言，0.9％的治疗效果最佳，包括对营养摄入量，回肠消化率或粪便质量无不良影响，以及增加的粪便SCFA和减少的粪便酚。菊粉引起的生物反应更加多变。