ABSTRACT

The aim of the present study was to compare orange fibre, beet pulp and inulin as fibre sources for cats. A control diet (CON) was formulated without inclusion of a fibre source. Further experimental diets were also based on diet CON but were supplemented with 1% orange fibre (diet 1%OF); 3% orange fibre (diet 3%OF); 3% beet pulp (diet 3%BP) or 1% inulin (diet 1%IN). Forty cats were used in a randomised block design (4 blocks of 10 cats, 2 animals per food in each block, totalling 8 animals per treatment). Each block lasted 20 d, with 10 d of adaptation, 10 d of faecal collection for digestibility as well as evaluation of pH-value and fermentation products. The digestibility of dry matter, organic matter, crude protein, ether extract, starch and gross energy did not vary between diets. In diet 1%OF, dietary fibre revealed a greater digestibility than in diet CON (p < 0.05). Faecal production was higher in cats fed diets 3%OF and 3%BP than in those fed diet 1%IN (p < 0.05). Faecal concentrations of acetate and total short-chain fatty acids were higher for cats fed diet 3%BP than for those fed diets 1%IN and CON (p < 0.05), while diets 1%OF and 3%OF showed intermediate results. Faecal propionate concentration was higher for cats fed diet 3%BP, intermediate for diets 1%OF, 3%OF and 1%IN and lower for animals fed diet CON (p < 0.05). Compared with diets CON and 1%IN, the faecal concentration of tyramine was higher for cats fed diet 3%OF (p < 0.05). Orange fibre was fermentable; up to 3% inclusion it did not interfere with the digestibility of nutrients, faecal score and faecal moisture content, and promoted the formation of short-chain fatty acids and tyramine by the intestinal microbiota, with possible effects on intestinal function.

摘要

本研究的目的是比较橘子纤维、甜菜浆和菊粉作为猫的纤维来源。配制不包含纤维源的对照饮食（CON）。进一步的实验饮食也基于饮食 CON，但补充了 1% 橙色纤维（饮食 1%OF）；3% 橙色纤维（饮食 3%OF）；3% 甜菜浆（日粮 3%BP）或 1% 菊粉（日粮 1%IN）。在随机区组设计中使用了 40 只猫（4 个区组，每组 10 只猫，每个区组中每种食物 2 只动物，每次处理总共 8 只动物）。每个区块持续20 d，其中有10 d的适应期，10 d的粪便收集消化率以及pH值和发酵产物的评价。干物质、有机物质、粗蛋白、乙醚提取物、淀粉和总能量的消化率在日粮之间没有变化。在饮食中的 1%OF，p <  0.05)。饲喂 3%OF 和 3%BP 饮食的猫的粪便产量高于饲喂 1%IN 饮食的猫（p <  0.05）。饲喂 3%BP 饲料的猫的粪便中乙酸盐和总短链脂肪酸浓度高于饲喂 1%IN 和 CON 饲料的猫（p <  0.05），而饲喂 1%OF 和 3%OF 的猫则显示出中间结果。饲喂 3%BP 的猫的粪便丙酸盐浓度较高，饲喂 1%OF、3%OF 和 1%IN 的猫的粪便丙酸盐浓度较高，饲喂 CON 的动物的粪便丙酸盐浓度较低（p <  0.05）。与 CON 和 1%IN 日粮相比，饲喂 3%OF 日粮的猫的粪便中酪胺浓度更高（p < 0.05)。橙色纤维是可发酵的；高达 3% 的添加量不影响营养物质的消化率、粪便评分和粪便水分含量，并促进肠道菌群形成短链脂肪酸和酪胺，可能对肠道功能产生影响。