Department of Grain Science and Industry, Kansas State University, Manhattan, Kansas, United States of America.
PLoS One. 2018 Oct 26;13(10):e0206090. doi: 10.1371/journal.pone.0206090. eCollection 2018.
Sorghum is an abundant starch source that has many potential health benefits. Some pet food companies have adopted whole sorghum in their formulations, however sorghum flour and (or) its phenolic rich seed coat might provide added benefit to companion animal diets. The objective of this experiment was to evaluate diets utilizing sorghum flour (FLD), and sorghum mill feed (MFD) relative to whole sorghum (WSD), and conventional grains (rice, corn and wheat; CON) in a typical dog diet. Adult (1-3 yr) Beagle dogs (n = 12; 10.6 kg ± 1.4) were randomly assigned to individual pens with ad libitum access to water. Dogs were fed twice daily and adapted to diet (9 d), and then total feces were collected for 5 d over 4 periods in a 4x4 replicated Latin square design. Fecal output for determination of digestibility was estimated using Cr2O3 as a marker. Number of defecations were quantified, and feces were scored. Approximately 3 mL of blood from each dog was collected at the end of each period and stored at -80° until further analyses. Means were separated using multivariate analysis of variance (MANOVA). Intake did not differ among treatments (average 187 g/d), but dogs fed the MFD excreted a larger (P<0.05) amount of feces, had more defecations per day, and lower (P<0.05) overall nutrient digestibility compared to the other treatments. The FLD had the highest (P<0.05) dry matter (DM), organic matter (OM), crude protein (CP) and gross energy (GE) digestibility, suggesting a possible application in "easy-to-digest" pet foods. Dogs fed the MFD had the highest (P < 0.05) plasma oxygen radical absorbance capacity (ORAC) value, but plasma ferulic and p-coumaric acids did not differ among treatments. Sorghum fractions have potential application in pet food; wherein, a bran rich fraction may promote antioxidant capacity, and flour increased digestibility.
高粱是一种丰富的淀粉来源，具有许多潜在的健康益处。一些宠物食品公司已经在他们的配方中采用了整粒高粱，然而高粱粉和（或）其富含酚类的种皮可能会为伴侣动物的饮食提供额外的益处。本实验的目的是评估利用高粱粉（FLD）和高粱米糠（MFD）相对于整粒高粱（WSD）和常规谷物（大米、玉米和小麦；CON）在典型犬粮中的作用。成年（1-3 岁）比格犬（n = 12；10.6 ± 1.4 kg）被随机分配到单独的围栏中，自由饮水。狗每天喂食两次，并适应饮食（9 天），然后在 4x4 重复拉丁方设计的 4 个时期内收集 5 天的总粪便。使用 Cr2O3 作为标记物估计粪便消化率。量化粪便的排泄量，并对粪便进行评分。每个时期结束时，从每只狗身上采集约 3 毫升血液，并在-80°C 下储存，直到进一步分析。使用多元方差分析（MANOVA）分离平均值。处理之间的摄入量没有差异（平均 187 g/d），但饲喂 MFD 的狗排出的粪便量更大（P<0.05），每天排便次数更多，整体营养消化率更低（P<0.05）与其他治疗方法相比。FLD 的干物质（DM）、有机物（OM）、粗蛋白（CP）和总能（GE）消化率最高（P<0.05），表明其在“易消化”宠物食品中有潜在应用。饲喂 MFD 的狗的血浆氧自由基吸收能力（ORAC）值最高（P < 0.05），但血浆阿魏酸和对香豆酸在处理之间没有差异。高粱各部分在宠物食品中有潜在的应用；其中，富含糠皮的部分可能会促进抗氧化能力，而面粉则会提高消化率。
