Dikeman C L, Murphy M R, Fahey G C
Division of Nutritional Sciences and Department of Animal Sciences, University of Illinois, Urbana, IL 61801, USA.
J Anim Physiol Anim Nutr (Berl). 2007 Apr;91(3-4):130-8. doi: 10.1111/j.1439-0396.2006.00652.x.
Two experiments were conducted to determine dietary factors affecting digesta viscosity. In experiment 1, six ileal-cannulated dogs were either full (607.1 kJ/BW0.67) or restricted (303.5 kJ/BW0.67) fed. In experiment 2, four dog foods were surveyed for effects on digesta viscosity based on protein source [animal protein (AP) or plant protein (PP)] or dietary fibre source [soluble dietary fibre (SDF) or insoluble dietary fibre (IDF)]. Dry matter (DM) intake was higher (p<0.05) when dogs were full (11.4 g/kg) compared with restricted fed (5.98 g/kg). Ileal digesta viscosity tended to be higher (p=0.07) for full fed [10,251 centipoise (cP)] compared with restricted-fed dogs (6677 cP). Ileal digesta viscosities were 6561, 11,074, 13,830 and 15,967 cP for dogs consuming IDF, SDF, AP and PP treatments respectively. Ileal DM concentrations were 11.4%, 13.6%, 14.8% and 14.8% for SDF, IDF, AP and PP treatments respectively. DM digestibility coefficients were lowest (71.2%) for the PP treatment and highest (88.7%) for the IDF treatment. Organic matter digestibilities followed a similar pattern. Ileal digesta viscosity of dogs appears to increase with increased diet intake, and increased ileal DM concentration. More digestible diets result in less ileal DM and lower viscosity constants.
进行了两项实验以确定影响消化物粘度的饮食因素。在实验1中，对6只回肠造瘘犬分别进行全量（607.1 kJ/BW0.67）或限饲（303.5 kJ/BW0.67）喂养。在实验2中，基于蛋白质来源[动物蛋白（AP）或植物蛋白（PP）]或膳食纤维来源[可溶性膳食纤维（SDF）或不溶性膳食纤维（IDF）]，对四种犬粮进行了消化物粘度影响的研究。与限饲（5.98 g/kg）相比，犬全量喂养（11.4 g/kg）时干物质（DM）摄入量更高（p<0.05）。全量喂养的犬（10251厘泊（cP））回肠消化物粘度比限饲犬（6677 cP）略高（p=0.07）。分别食用IDF、SDF、AP和PP处理的犬回肠消化物粘度分别为6561、11074、13830和15967 cP。SDF、IDF、AP和PP处理的犬回肠DM浓度分别为11.4%、13.6%、14.8%和14.8%。PP处理的DM消化系数最低（71.2%），IDF处理的最高（88.7%）。有机物消化率呈现类似模式。犬回肠消化物粘度似乎随着饮食摄入量增加和回肠DM浓度升高而增加。易消化的饮食导致回肠DM减少和粘度常数降低。
