Department of Agrobiotechnology, IFA-Tulln, Institute of Animal Nutrition, Livestock Products and Nutrition Physiology (TTE), University of Natural Resources and Life Sciences (BOKU), Vienna, Austria.
J Sci Food Agric. 2019 Jun;99(8):3895-3902. doi: 10.1002/jsfa.9612. Epub 2019 Mar 18.
The aim of the study was to rank conventionally used fibre rich feeds for their physicochemical properties and detect possible correlation between analytical fibre determinations. A total of 22 samples were analysed for proximate fibre values, soluble dietary fibre (SDF), insoluble dietary fibre (IDF), crude protein (CP) and crude ash (CA). Physicochemical properties were determined in vitro by hydration capacity (HC) [water holding capacity (WHC), water binding capacity (WBC), swelling property (SwP)] and buffering capacity [linear buffering rate (LBR)].
Fibre content and physicochemical properties varied markedly between the samples. HC was highest for beet pulp and lowest for rice and millet bran. Buffering capacity expressed minimum values for lignocelluloses and maximum values for rape seed hulls. The correlation of methods was positively between WBC, WHC and SwP (r ≤ 0.89; P ≤ 0.003) but not significant for HC and buffering capacity. SwP negatively correlated with crude fibre (CF), neutral detergent fibre (aNDF ) and IDF (r ≤ -0.48; P ≤ 0.05). WBC and SwP positively correlated with SDF (r ≤ 0.63; P ≤ 0.04). LBR was negatively correlated with CF, aNDF , IDF and total dietary fibre (r ≤ -0.55; P ≤ 0.02), but positively with CP (r = 0.53; P = 0.01).
The determination of physicochemical properties is applicable to rank fibre rich feeds, some correlations between fibre analytical measurements and physicochemical properties were detected. © 2019 Society of Chemical Industry.
本研究旨在根据理化特性对常用纤维饲料进行排序，并检测纤维分析测定之间的可能相关性。共分析了 22 个样品的膳食纤维、可溶性膳食纤维（SDF）、不溶性膳食纤维（IDF）、粗蛋白（CP）和粗灰分（CA）的近等纤维值。通过水合能力（HC）[水保持能力（WHC）、水结合能力（WBC）、膨胀特性（SwP）]和缓冲能力[线性缓冲率（LBR）]，在体外测定理化特性。
纤维含量和理化特性在样品之间差异显著。甜菜浆的 HC 最高，米糠和小米糠的 HC 最低。木质纤维素的缓冲能力最低，油菜籽壳的缓冲能力最高。WBC、WHC 和 SwP 之间呈正相关（r≤0.89；P≤0.003），但与 HC 和缓冲能力无显著相关性。SwP 与粗纤维（CF）、中性洗涤剂纤维（aNDF）和 IDF 呈负相关（r≤-0.48；P≤0.05）。WBC 和 SwP 与 SDF 呈正相关（r≤0.63；P≤0.04）。LBR 与 CF、aNDF、IDF 和总膳食纤维呈负相关（r≤-0.55；P≤0.02），但与 CP 呈正相关（r=0.53；P=0.01）。
理化特性的测定可用于对纤维饲料进行排序，检测到纤维分析测量值与理化特性之间的一些相关性。© 2019 英国化学学会。
