Jewell Dennis E, Jackson Matthew I, Cochrane Chun-Yen, Badri Dayakar V
Department of Grain Science and Industry, Kansas State University, Manhattan, KS 66506, USA.
Hill's Pet Nutrition, Inc., Topeka, KS 66617, USA.
Animals (Basel). 2022 Jun 27;12(13):1654. doi: 10.3390/ani12131654.
Consumption of fiber in its different forms can result in positive health effects. Prior studies in dogs found that addition of a fiber bundle (composed of pecan shells, flax seed, and powders of cranberry, citrus, and beet) to food resulted in a shift in fecal bacterial metabolism from proteolysis to saccharolysis. The present study evaluated the changes in fecal metabolites and microbiota in healthy cats following the consumption of this fiber bundle. Following a 28-day pre-feed period, 56 healthy adult cats received food with none or one of three concentrations (0%, 1%, 2%, and 4%) of the fiber bundle for a 31-day period. In cats that consumed the 4% fiber bundle, levels of ammonium and fecal branched-chain fatty acids (BCFAs) decreased from baseline and compared with the other groups. Addition of any level of the fiber bundle resulted in increases in beneficial metabolites: polyphenols hesperidin, hesperetin, ponciretin, secoisolariciresinol diglucoside, secoisolariciresinol, and enterodiol. Little change in fecal microbiota was observed. Since higher levels of ammonia and BCFAs indicate putrefactive metabolism, the decreases in these with the 4% fiber bundle indicate a shift toward saccharolytic metabolism despite little change in the microbiota composition.
食用不同形式的纤维可产生积极的健康影响。先前对犬类的研究发现，在食物中添加纤维束（由山核桃壳、亚麻籽以及蔓越莓、柑橘和甜菜粉组成）会导致粪便细菌代谢从蛋白水解转变为糖解。本研究评估了健康猫食用这种纤维束后粪便代谢物和微生物群的变化。在为期28天的预喂食期后，56只健康成年猫在31天内分别食用不含纤维束或含有三种浓度（0%、1%、2%和4%）之一纤维束的食物。在食用4%纤维束的猫中，铵和粪便支链脂肪酸（BCFA）水平较基线下降，且与其他组相比也是如此。添加任何水平的纤维束都会使有益代谢物增加：多酚类的橙皮苷、橙皮素、枳属苷、开环异落叶松脂素二葡萄糖苷、开环异落叶松脂素和肠二醇。粪便微生物群几乎没有变化。由于较高水平的氨和BCFA表明存在腐败代谢，4%纤维束使这些物质减少，这表明尽管微生物群组成变化不大，但代谢已向糖解代谢转变。
