Disappearance of nutrients and energy in the stomach and small intestine, cecum, and colon of pigs fed corn-soybean meal diets containing distillers dried grains with solubles, wheat middlings, or soybean hulls
Disappearance of nutrients and energy in the stomach and small intestine, cecum, and colon of pigs fed corn-soybean meal diets containing distillers dried grains with solubles, wheat middlings, or soybean hulls
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DOI：
10.2527/jas.2016.0752
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发表时间：
2017-02-01
影响因子：
3.3
通讯作者：
Stein, H. H.
中科院分区：
文献类型：
--
作者：
Jaworski, N. W.;Stein, H. H.
测定了饲粮中含有干酒糟和可溶物（DDGS）、次粉或大豆皮的猪的胃、小肠、盲肠和结肠中营养物质和能量的消失情况。第二个目的是检验膳食纤维的物理特性与营养素和能量的消化率相关的假设。将8头在回肠远端具有T形插管且在近端结肠中具有另一个T形插管的公猪（初始BW = 37.3 +/- 1.0 kg）分配到重复的4 x 4拉丁方设计中，每个正方形具有4种饮食和4个时期。基础日粮为玉米-豆粕型日粮，3种附加日粮分别用DDGS、次粉和大豆皮替代基础日粮的30%。经过8天的适应期，粪便样品收集的第9和10天，并从结肠和回肠样品收集的第11和12天，第13和14天，分别。计算营养物质和能量的表观回肠消化率（AID）、表观盲肠消化率（ACD）和表观全消化道消化率（ATTD）。结果表明，可溶性膳食纤维的ACD和ATTD在不同日粮中没有差异，表明可溶性膳食纤维主要在小肠或盲肠中发酵。与饲喂含有DDGS或大豆皮的饲料的猪相比，饲喂小麦次粉饲料的猪具有更大（P = 0.05）的不溶性膳食纤维ACD，这表明小麦次粉中的不溶性纤维可能比DDGS或大豆皮中的不溶性纤维更易发酵。饲喂大豆皮日粮的猪结肠中不溶性膳食纤维的消失率更高（P
Disappearance of nutrients and energy in the stomach and small intestine, cecum, and colon of pigs fed diets containing distillers dried grains with solubles (DDGS), wheat middlings, or soybean hulls was determined. A second objective was to test the hypothesis that physical characteristics of dietary fiber in diets are correlated with the digestibility of nutrients and energy. Eight barrows (initial BW = 37.3 +/- 1.0 kg) with a T-cannula in the distal ileum and another T-cannula in the proximal colon were allotted to a replicated 4 x 4 Latin square design with 4 diets and 4 periods in each square. The basal diet was a corn-soybean meal diet and 3 additional diets were formulated by substituting 30% of the basal diet with DDGS, wheat middlings, or soybean hulls. Following an 8-d adaptation period, fecal samples were collected on d 9 and 10, and samples from the colon and the ileum were collected on d 11 and 12, and d 13 and 14, respectively. Values for apparent ileal digestibility (AID), apparent cecal digestibility (ACD), and apparent total tract digestibility (ATTD) of nutrients and energy were calculated. Results indicated that ACD and ATTD of soluble dietary fiber was not different regardless of diet indicating that the soluble dietary fiber is mostly fermented in the small intestine or in the cecum. Pigs fed the wheat middlings diet had greater (P = 0.05) ACD of insoluble dietary fiber compared with pigs fed diets containing DDGS or soybean hulls indicating that the insoluble fiber in wheat middlings may be more fermentable than insoluble fiber in DDGS or soybean hulls. Insoluble dietary fiber disappearance in the colon of pigs fed the soybean hulls diet was greater (P