Cole J T, Fahey G C, Merchen N R, Patil A R, Murray S M, Hussein H S, Brent J L
Department of Animal Sciences, University of Illinois, Urbana 61801-3838, USA.
J Anim Sci. 1999 Apr;77(4):917-24. doi: 10.2527/1999.774917x.
In Exp. 1, soybean hull samples were obtained from nine sources across the United States and analyzed for nutrient content to determine their suitability for inclusion in dog diets. Compositional data revealed variation in both the amount of total dietary fiber (TDF; 63.8 to 81.2%) in the soybean hulls and the ratio of insoluble:soluble fiber (5.0:1 to 15.4:1). Crude protein content varied widely among sources, ranging from 9.2 to 18.7%. An in vivo trial (Exp. 2) was conducted using a premium dog diet containing 3.0, 4.5, 6.0, 7.5, or 9.0% soybean hulls (DM basis). There was a negative linear effect (P < .05) of soybean hull inclusion in the diet on DM, OM, TDF, and GE total-tract digestibilities, as well as on calculated ME. Crude protein and fat digestibilities were unaffected by treatment. Based on these results, ileally cannulated dogs were fed diets containing 6.0, 7.5, or 9.0% soybean hulls (DM basis) in addition to diets containing either 0% supplemental fiber or 7.5% beet pulp (Exp. 3). Nutrient digestion at the ileum was unaffected by inclusion of supplemental fiber. Total tract digestion of DM, OM, and GE was lower ( P < .05) for diets containing supplemental fiber when compared with the diet containing 0% fiber. Crude protein and fat digestibilities were unaffected by treatment. There was no difference in nutrient digestibility between those diets containing soybean hulls and a diet containing beet pulp. Soybean hull inclusion in the diet resulted in a negative linear effect (P < .05) on calculated ME, in addition to lowering ME (P < .05) when compared with the 0% fiber control diet. Calculated ME for dogs fed a 7.5% beet pulp-containing diet was lower (P < .05) than that for dogs fed the soybean hull-containing diets. Results indicate that soybean hulls can be an effective dietary fiber source in dog diets.
在实验1中，从美国各地九个来源获取大豆皮样本，并分析其营养成分，以确定其是否适合纳入犬粮。成分数据显示，大豆皮中总膳食纤维（TDF；63.8%至81.2%）的含量以及不溶性纤维与可溶性纤维的比例（5.0:1至15.4:1）均存在差异。不同来源的粗蛋白含量差异很大，范围为9.2%至18.7%。进行了一项体内试验（实验2），使用一种优质犬粮，其中含有3.0%、4.5%、6.0%、7.5%或9.0%的大豆皮（以干物质计）。日粮中添加大豆皮对干物质、有机物、总膳食纤维和总能的全肠道消化率以及计算得出的代谢能有负线性影响（P<0.05）。粗蛋白和脂肪消化率不受处理影响。基于这些结果，除了含有0%补充纤维或7.5%甜菜粕的日粮外，给回肠造瘘犬饲喂含有6.0%、7.5%或9.0%大豆皮的日粮（以干物质计）（实验3）。补充纤维的添加对回肠营养物质消化没有影响。与不含纤维的日粮相比，含有补充纤维的日粮的干物质、有机物和总能的全肠道消化率较低（P<0.05）。粗蛋白和脂肪消化率不受处理影响。含有大豆皮的日粮与含有甜菜粕的日粮之间的营养物质消化率没有差异。日粮中添加大豆皮除了与0%纤维对照日粮相比降低代谢能（P<0.05）外，还对计算得出的代谢能有负线性影响（P<0.05）。饲喂含有7.5%甜菜粕日粮的犬的计算代谢能低于饲喂含有大豆皮日粮的犬（P<0.05）。结果表明，大豆皮可以成为犬粮中一种有效的膳食纤维来源。
