日粮纤维组成对生长猪净能和营养物质消化率的影响

发布时间：2018-02-28 10:08

本文关键词： 纤维净能消化率生长猪　出处：《中国畜牧杂志》2017年02期 　论文类型：期刊论文

【摘要】：本试验旨在研究相同总膳食纤维水平下,不同含量的可溶性和不可溶性纤维日粮对生长猪净能值和营养物质消化率的影响。试验选用18头(36.12±3.06)kg杜×长×大三元杂交去势公猪,随机分为玉米-豆粕基础日粮、甜菜渣日粮和大豆皮日粮3个处理组,每组6头猪。其中甜菜渣日粮和大豆皮日粮是甜菜渣和大豆皮分别替代基础日粮供能部分的22.49%和20.45%。试验共3期,每期28 d,包括22 d适应期和6 d测热期。结果表明:纤维日粮的有效能值及总能、粗蛋白质和粗脂肪的消化率显著低于基础日粮(P0.01),甜菜渣日粮的总膳食纤维消化率显著高于基础日粮(P0.05);纤维显著增加了粪氮的排出(P0.01);甜菜渣和大豆皮的净能值分别为8.52、6.48 MJ/kg。表明纤维会降低日粮营养物质的消化率和有效能值,但是可溶性纤维含量高的日粮其纤维本身的消化程度更高。
[Abstract]:The purpose of this experiment was to study the effects of soluble and insoluble fiber diets on the net energy value and nutrient digestibility of growing pigs at the same total dietary fiber level. Eighteen ovariectomized boars with 36.12 卤3.06 kg / kg du 脳 long 脳 large size were used in the experiment. They were randomly divided into three groups: corn-soybean meal basal diet, beet residue diet and soybean husk diet. There were 6 pigs in each group. The beet residue diet and soybean skin diet were used to replace 22.49% and 20.45 percent of the basic dietary energy supply, respectively. The results showed that the effective value and total energy of fiber diet were 28 days, 22 days and 6 days, respectively. The digestibility of crude protein and crude fat was significantly lower than that of basal diet P0.01, the digestibility of total dietary fiber in beet residue diet was significantly higher than that in basal diet P0.05, the fiber significantly increased the excretion of fecal nitrogen, and the net energy value of beet residue and soybean peel was higher than that of soybean peel, respectively. The dietary nutrient digestibility and the effective value were decreased by fiber, which was 8.52 ~ 6.48 MJ / kg 路kg ~ (-1) 路kg ~ (-1) 路L ~ (-1) 路L ~ (-1). However, diets with high soluble fiber content had higher digestibility of fiber itself.
【作者单位】：中国农业大学动物科技学院;
【基金】：国家自然科学基金(31630074) 111项目(B16044)
【分类号】：S828.5

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