Carbohydrate and lignin contents of plant materials used in animal feeding
Carbohydrate and lignin contents of plant materials used in animal feeding
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DOI：
10.1016/s0377-8401(97)00009-6
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发表时间：
1997-08-01
影响因子：
3.2
通讯作者：
Knudsen, KEB
中科院分区：
文献类型：
--
作者：
Knudsen, KEB
共115个样品代表38种不同的饲料进行了分析的碳水化合物和木质素。通过高效液相色谱法分析样品中的低分子量（LMW）糖，通过比色法分析淀粉、果聚糖和混合连接β（1 -> 3;1 -> 4）-D-葡聚糖，通过气液色谱法分析总的、可溶的和不溶性的非淀粉多糖（NSP），通过重量分析法分析木质素。除苜蓿粉外，几乎所有的碳水化合物和木质素的定量回收率，计算值和分析值之间的偏差小于2 g kg（-1）干物质。计算值与分析值的相关系数为0.985（P < 0.0001）。低分子量糖的浓度（g/kg干物质）从5 g/kg变化到137 g/kg，在谷物替代品中发现的值最低，全粒谷物和副产品，而蛋白浓缩物一般具有最高含量的低分子量-糖（57-137 g kg（-1））。淀粉是全谷物中的主要多糖，其含量从燕麦的468 g kg（-1）到玉米的690 g kg（-1）、谷物副产品（93-902 g kg（-1））和木薯淀粉（768 g kg（-1））不等。相比之下，除了豌豆和蚕豆之外，所有蛋白质浓缩物中淀粉的浓度都很低。玉米粉中的非淀粉多糖和木质素含量最低（非淀粉多糖，21 g kg（-1）木质素，4 g kg（-1）），燕麦船体粉中的非淀粉多糖和木质素含量最高（非淀粉多糖，503 g kg（-1）;木质素，148 g kg（-1））。蛋白质浓缩物中的NSP和木质素也有显著变化，NSP值从蚕豆的189 g kg（-1）变化到白色羽扇豆的451 g kg（-1），木质素从白色羽扇豆的12 g kg（-1）变化到向日葵饼的133 g kg（-1）。草粉、苜蓿粉和甜菜纤维通常具有高浓度的非淀粉多糖和木质素，其中草粉和苜蓿粉中的非淀粉多糖值为329-426 g kg（-1），木质素值为128-169 g kg（-1），甜菜纤维中的非淀粉多糖值为779 g kg（-1），木质素值为35 g kg（-1）。(C)1997年Elsevier Science B.V.
A total of 115 samples representing 38 different feedstuffs was analysed for carbohydrates and lignin. The samples were analysed for low-molecular weight (LMW) sugars by high-performance liquid chromatography, starch, fructan and mixed Linked beta(1 --> 3;1 --> 4)-D-glucan by colorimetry, total, soluble and insoluble non-starch polysaccharides (NSP) by gas-liquid chromatography and lignin by gravimetry. For all but alfalfa meal, almost quantitative recovery of carbohydrates and lignin was obtained with a deviation between calculated and analysed values of less than 2 g kg(-1) dry matter. The correlation between calculated and analysed values was 0.985 (P < 0.0001).The concentration (g kg(-1) dry matter) of LMW-sugars varied from 5 g kg(-1) and up to 137 g kg(-1) with the lowest values found in cereal substitutes, whole grain cereals and by-products while the protein concentrates in general had the highest content of LMW-sugars (57-137 g kg(-1)). Starch was the main polysaccharide in whole grain cereals where it varied from 468 g kg(-1) in oats to 690 g kg(-1) in maize, in cereal by-products (93-902 g kg(-1))and in tapioca (768 g kg(-1)). In contrast, the concentration of starch was low in all protein concentrates but peas and faba beans. The lowest levels of NSP and lignin were found in maize flour (NSP, 21 g kg(-1) lignin, 4 g kg(-1)) and the highest levels in oat hull meal (NSP, 503 g kg(-1); lignin, 148 g kg(-1)). There was also a significant variation in NSP and lignin in protein concentrates with the NSP value varying from 189 g kg(-1) in faba beans to 451 g kg(-1) in white lupins and with lignin varying from 12 g kg-l in white lupins to 133 g kg(-1) in sunflower cake. Grass meal, alfalfa meal and sugar beet fibre had in general high concentrations of NSP and lignin with values in grass and alfalfa meals of NSP: 329-426 g kg(-1) and lignin: 128-169 g kg(-1) and in sugar beet fibre 779 g kg(-1) and 35 g kg(-1), respectively. (C) 1997 Elsevier Science B.V.