Dietary level and source of neutral detergent fiber and ileal endogenous nitrogen flow in pigs.
Dietary level and source of neutral detergent fiber and ileal endogenous nitrogen flow in pigs.
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DOI：
10.2527/1995.732441x
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发表时间：
1995-02
影响因子：
3.3
通讯作者：
H. Schulze;P. Leeuwen;M. Verstegen;J.W.O. van den Berg
中科院分区：
文献类型：
--
作者：
H. Schulze;P. Leeuwen;M. Verstegen;J.W.O. van den Berg
本试验通过两个试验研究了日粮中性洗涤纤维（NDF）水平和来源对回肠干物质流量和末端回肠总氮和内源氮流量的影响。22个杂交6周龄去势雄性猪，平均体重为9 kg。猪配有瓣膜后T-盲肠插管和两根留置血液导管。试验期为10 d，试验猪11周龄，平均体重14 kg。他们被喂食2.6倍于玉米淀粉为基础的半合成饮食的能量维持需求。日粮中含有178 g大豆分离物/kg作为唯一的氮源（N）。在饮食的实验。1，纯化的NDF以0和200 g/kg饲料的量包含，以葡萄糖为代价。Exp.的饮食2含有三种不同NDF来源（纯化NDF、麦麸或向日葵壳）之一，其水平为144 g NDF/kg DM。纯化的NDF（pNDF）从与实验1中使用的麦麸（WB）相同的批次中分离。2.用~（15）N同位素稀释法测定了这些猪回肠末端的内源氮流量。在实验饮食中加入NDF增加了回肠DM流量（P0.05）.（250字处删节）
Two experiments were conducted to study the effect of dietary level and source of neutral detergent fiber (NDF) on ileal dry matter flow and on total and endogenous N flow at the terminal ileum. Twenty-two crossbred 6-wk-old castrated male pigs with an average BW of 9 kg were used. The pigs were fitted with a post-valvular T-cecal cannula and two indwelling blood catheters. During the experimental period of 10 d, the pigs were 11 wk of age with an average BW of 14 kg. They were fed 2.6 times their maintenance requirement for energy of a corn starch-based, semisynthetic diet. The diets contained 178 g of soy isolate/kg as the only source of nitrogen (N). In diets of Exp. 1, purified NDF was included at 0 and 200 g/kg of feed at the expense of glucose. The diets of Exp. 2 contained one of the three different NDF sources (purified NDF, wheat bran, or sunflower hulls) at a level of 144 g of NDF/kg of DM. The purified NDF (pNDF) was isolated from the same batch as the wheat bran (WB) used in Exp. 2. The endogenous N flow at the terminal ileum of these pigs was determined with the 15N-isotope dilution method. The inclusion of NDF in the experimental diets increased (P .05) ileal DM flows.(ABSTRACT TRUNCATED AT 250 WORDS)